СКВАЖИННОЕ ВИБРАЦИОННОЕ УСТРОЙСТВО С СИНУСОИДАЛЬНЫМИ КОЛЕБАНИЯМИ

Изобретение относится к области бурения. Устройство, установленное на месте или подходящее для использования в качестве вибрационного инструмента внутрискважинной компоновки или во внутрискважинной компоновке, содержит первую магнитную компоновку, вращающуюся или выполненную с возможностью вращения относительно второй магнитной компоновки и которая при таком вращении обуславливает по меньшей мере по существу аксиальные колебания и/или возвратно-поступательное перемещение второй магнитной компоновки. Совершающая колебания и/или возвратно-поступательное перемещение магнитная компоновка по меньшей мере по существу на одном из концов или обоих концах прикреплена к податливому элементу и ограничивается в своих колебаниях и/или возвратно-поступательном перемещении податливым элементом. Обеспечивается распределение на наружном корпусе вибрационного инструмента и/или любой прикрепленной на устье и/или забое скважины оснастке силы на выходе от сжатия и растяжения податливого элемента по существу ...

СПОСОБ И УСТРОЙСТВО РАСПРЕДЕЛЕННЫХ СИСТЕМ УВЕЛИЧЕННОЙ ДОСЯГАЕМОСТИ В НЕФТЯНЫХ МЕСТОРОЖДЕНИЯХ

Группа изобретений относится к способу перемещения и устройству размещения колонны гибких труб в стволе скважины. Технический результат заключается в увеличении глубины проникновения колонны гибких труб. В способе перемещения колонны гибких труб в стволе скважины перемещают колонну гибких труб вдоль внутренней части ствола скважины, инициируют движение вдоль длины колонны гибких труб и увеличивают досягаемость гибких труб вдоль внутренней части ствола скважины с одним или более источниками вибраций. Инициирование происходит с помощью одного или более источников вибрации, включенных в одно или более соединительных устройств гибких труб, соединяющих участки гибких труб в колонне гибких труб. Источником вибраций является клапан. 2 н. и 12 з.п. ф-лы, 8 ил.

ГИДРАВЛИЧЕСКОЕ УСТРОЙСТВО ДЛЯ ПРИСОЕДИНЕНИЯ В БУРИЛЬНОЙ КОЛОННЕ

Изобретение относится к области горного дела и может применяться в скважинах. К бурильной колонне присоединяют устройство, адаптированное для генерации продольных колебаний высокой частоты. Устройство выполнено в виде гидравлического цилиндра двойного действия, имеющего автоматически смещаемые переключающиеся клапаны. Поршень связан с двойным трубчатым штоком. Поршень делит цилиндр на две камеры. Текучая среда течет через переключающиеся клапаны, когда бурильная колонна входит в пробуренную скважину. Поршень со штоком совершает возвратно-поступательное перемещение. Это устройство также пригодно для альтернативного использования в качестве ударного или установочного инструмента в бурильной колонне. Снижается сопротивление трению, возникающее при проталкивании буровой колонны, в частности витого трубопровода, в пробуренную скважину. 4 з.п. ф-лы, 3 ил.

ВИБРАЦИОННОЕ УСТРОЙСТВО ДЛЯ БУРЕНИЯ СКВАЖИН

Изобретение относится к горной промышленности, а именно к бурению нефтяных и газовых скважин турбинным способом. Задача изобретения - повышение эффективности бурения скважин за счет более полного доведения осевой нагрузки на долото при направленном генерировании колебаний. Вибрационное устройство содержит корпус, встраиваемый в колонну бурильных труб. Новым в вибрационном устройстве является эксцентрик, расположенный по оси корпуса и соединенный верхним концом с гидротурбиной, а нижним примыкающий к диску, свободно вращающемуся вокруг оси корпуса за счет дисбаланса и имеющему отверстие для прохода промывочной жидкости, периодически перекрываемое эксцентриком при его вращении. 2 ил.

СПОСОБ БУРЕНИЯ ПОРОДЫ С ПЕРЕМЕННЫМИ СВОЙСТВАМИ И УСТРОЙСТВО ДЛЯ ЕГО ОСУЩЕСТВЛЕНИЯ

Изобретение относится к горной технике с использованием вибрационных или колебательных средств. Техническим результатом является повышение эффективности производительности бурения различных по физико-механическим свойствам горных пород. Сущность способа заключается в том, что в автоматическом режиме выполняют сравнение действительного и опорного значений суммарной нагрузки на буровой инструмент с использованием прямой положительной и обратной отрицательной связей между силовыми и кинематическими параметрами процесса бурения. Далее по сигналу рассогласования изменяют посредством изменения коэффициентов усиления связей величину подачи и частоту вращения бурового инструмента. Также изменяют частоту и амплитуду наложенных колебаний силовых и кинематических параметров бурового инструмента до значений, соответствующих физико-механическим свойствам породы. Реализуют способ с помощью устройства, которое состоит из гидронасоса постоянной производительности, предохранительно-разгрузочного клапана ...

КЛАПАН БУРОВОГО ДВИГАТЕЛЯ И СПОСОБ ЕГО ПРИМЕНЕНИЯ

Группа изобретений относится к области бурения, а именно к техническим средствам для управления потоком бурового раствора, проходящим через скважинный инструмент, установленный в стволе скважины, проходящей через подземный пласт. Скважинный инструмент содержит буровое долото на своем нижнем конце и буровой двигатель, содержащий кожух с ротором, вращающимся в канале ротора в кожухе, когда буровой инструмент проходит через него. Ротор имеет перепускной канал для перепуска части бурового раствора по нему. Клапан содержит пластину клапана, установленную выше по потоку от двигателя, имеющую по меньшей мере один проход потока и по меньшей мере один перепускной проход, проходящий через нее. По меньшей мере один проход потока гидравлически сообщен с каналом ротора для пропуска бурового раствора, проходящего через него. Ротор выполнен с возможностью вращения в кожухе. По меньшей мере один перепускной проход селективно гидравлически сообщен с перепускным каналом, когда ротор вращается в кожухе, и ...

БУРОВОЙ ИНСТРУМЕНТ С АСИНХРОННЫМИ ГЕНЕРАТОРАМИ КОЛЕБАНИЙ И СПОСОБ ЕГО ИСПОЛЬЗОВАНИЯ

Eccentric drive for rolling and milling drilling tool - has separate drive for fast-running eccentric and slow-running casing with adjustable counterweight in tool casing

A casing (1) fitted with tools pivots radially and is rotatably located in a bearing (2) on an eccentric (3). On the eccentric are adjustable counterweights (4) for dynamic balancing. A shaft (5) which runs slowly drives the casing contg. the tools. A holder (6) with bearings (7) accommodates the second part of the eccentric shaft/casing (3). An inner tooth crown (10) has an outer tooth crown (11) on the drive shaft (5) running in it, the shaft undergoing redn. in the ratio of approximately 20:1. In a special version, the inner tooth crown (10) is provided with a pin. USE - As an eccentric drive for rolling and milling drilling tools.

Verfahren zum Richtungsbohren

Hydraulically operated vibratory casing driver - driven rock

Borehole casing machine has drives for lifting and lowering operations and for the rotation of the drilling pipe itself. Superposed on these drives are high frequency oscillations by means of vibrators. The drive rate is higher in rock capable of compaction by the vibratory effect and, in the event of rock pressure, the vibrations assist rock compaction and so stabilise or alleviate the pressure.

Vibrating downhole tool and methods

Unbalance force identifiers and balancing methods for drilling equipment assemblies

A described bottom hole assembly includes a drill bit arranged at a distal end of a drill string and rotatable about a first central axis, the drill bit exhibiting a first unbalance force acting laterally on the drill bit at a first angular orientation, a first unbalance force marking physically applied to the drill bit and corresponding to the first unbalance force, a tool arranged axially from the drill bit, the tool exhibiting a second unbalance force acting laterally on the tool at a second angular orientation, and a second unbalance force marking physically applied to the tool and corresponding to the second unbalance force, wherein an angular offset between the first and second unbalance forces markings is able to be manipulated in order to obtain a minimized or desired tandem resulting unbalance force.

Vibrator devices

... 753,132. Soil stabilizing apparatus. STEUERMAN, S. June 18, 1953 [June 25, 1952], No. 16911/53. Class 68(1) A vibrator for use in the method of soil stabilization described in Specification 753,210, which is referred to, comprises a streamlined shell formed by two parts 18a, 18b bolted together. Each bolt 27 couples together interfitting parts, which are shaped to form radially projecting fins 25. The height of each fin is less than the minimum distance between two adjacent fins, which project outwardly of the shell for a distance equal to a quarter of the radius of the shell. The motor 15 driving the out-of-balance masses 14 is situated in the lower part 18a adjacent the fins. Liquid or a solid-in-liquid suspension can be supplied as required to the soil to be compacted through the forward end 22 of the shell or through nozzles 21a or slots 21b.

Predicting damage to wellbore tubulars due to multiple pulse generating devices

Device and method for drilling a subterranean formation with variable depth of cut

A rotary-type drag bit for drilling a subterranean formation which comprises a near-bit sub 76 configured for attachment to the downhole end of a drill string, a bit body 10 attached to the near-bit sub having fixed cutting elements, an apparatus associated with the near-bit sub for producing variable depth of cut by the fixed cutting elements where the apparatus is structured to vary the velocity of rotation of the bit body relative to the formation during drilling. The apparatus may comprise a hole wall brake 300.

Tool for generating down hole axial force

A down hole drilling tool which uses the harmonic oscillation of transient pressure waves in the mud within the drillstring, to generate axial force. The invention is particularly suited to extended reach drilling applications where drillstring drag in horizontal sections presents problems when trying to maintain weight on bit. With reference to Fig 1, the tool, being a pipe system, is bounded by an exciter valve 2 at the downstream end and a check valve 5 at the upstream end. The exciter valve 2 is oscillated at one of the critical frequencies of the pipe system in order to establish a resonant condition (water hammer) in the tool. An oscillating standing wave of considerable magnitude is generated, the peaks of which occur at the closed valves 2 and 5. The pressure acting at the closed valves 2 and 5 is transmitted as an axial force to the attached drillstring 1 and 6. ...

Method of drilling a subterranean formation employing an oscillating drill bit

Method and apparatus for oscillating a drill string

A method of oscillating a drill string (135), which method comprises the steps of : (a) rotating said drill string (135) in a first direction until a first limit is reached; and (b) rotating said drill string (135) in a second direction until a second limit is reached; characterised in that said first and second limits are based upon the amount of energy expended during rotation.

Downhole vibrating tool

A vibrating downhole tool includes a housing 310 having a central axis A defined therethrough and an inner mandrel 320 disposed within the housing 310 and configured to receive a drilling fluid. The inner mandrel 320 is misaligned relative to the housing central axis, and a plurality of turbine blades 322 are present and configured to receive the drilling fluid and to rotate the inner mandrel, 320 thereby causing the downhole tool to vibrate by virtue of said misalignment. In one embodiment at least one of the turbine blades 322 may have a property which is different from the other turbine blades to cause the mandrel to vibrate. The property can be blade size, shape, mass and profile.

Device and method for drilling a subterranean formation with variable depth of cut

A rotary-type drag bit for drilling a subterranean formation which comprises a near-bit sub 76 configured for attachment to the downhole end of a drill string, a bit body 10 attached to the near-bit sub having fixed cutting elements, an apparatus associated with the near-bit sub for producing variable depth of cut by the fixed cutting elements where the apparatus is structured to provide axial oscillation of the bit body relative to the formation during drilling, the apparatus comprising a lower member 83 attached to the bit body and an upper member 94 spaced from the lower member and biased with respect thereto by a resilient member 116 providing movement of the lower member relative to the upper member.

Predicting damage to wellbore tubulars due to multiple pulse generating devices

A method includes comparing a natural frequency of a tubular with a frequency of each of at least two pulse generating devices positioned adjacent each other on the tubular, the tubular and the at least two pulse generating devices comprising an energy system; adjusting the frequency of at least one of the at least two pulse generating devices when the frequency is equal to the natural frequency of the tubular and obtaining an adjusted frequency different from the natural frequency; calculating an energy distribution in the energy system based on the natural frequency and the adjusted frequency of the at least one of the at least two pulse generating devices; and determining a new location on the tubular for positioning one or more of the at least two pulse generating devices such that energy introduced into the energy system is less than energy dissipated from the energy system.

VIBRATORY DRILL APPARATUS

Method of drilling a subterranean formation employing an oscillating drill bit

Vibration transmission and isolation

Resonant extractor system and method

DRILL SHOE

Wear resistant vibration assembly and method

A vibration assembly includes a valve above a rotor and stator. The rotor rotates within the stator as fluid flows therethrough. The valve includes a rotating valve segment, which rotates with the rotor, and a non-rotating valve segment each including at least one fluid passage. In an open position, the fluid passages of the valve segments are aligned and a fluid flows through the valve. In a restricted position, the fluid passages of the valve segments are partially or completely unaligned, thereby creating a pressure pulse that is transmitted through the drill string or coiled tubing above the valve. The valve may further include an inner sleeve and an outer sleeve surrounding the non-rotating valve segment. The inner and outer sleeves allow axial sliding but prevent rotation of the non-rotating valve segment. The assembly may further include a lower thrust bearing at a lower end of the rotor.

Device and method for perforation of a downhole formation

Drillsting with a bottom hole assembly having multiple agitators

Downhole tool activation and deactivation system

A system provides for the remote activation and deactivation of a downhole tool such as an agitator tool. The downhole tool uses a dart-catching 410 , 420, 430 section configured with a guide section and a profile 415, 425, 435 that engages with a corresponding key section of a dart. The tool also comprises a power section coupled to the dart catching section and configured to power the downhole tool when activated by catching the dart. Different tools in the string may have different profiles, allowing darts to pass through tools to reach a tool with a matching profile further downhole. The dart includes a removable nozzle that can be detached by a object dropped from the surface, after which a second dart may be dropped to engage with the first dart to change operating parameters of the tool.

Sonic heads and assemblies and uses thereof.

Vibrational apparatus

Sonic heads and assemblies and uses thereof

Equipment of production and exploitation of an electrical energy usable in drilling.

Device to drill holes in the rock, the ground or others.

Probe drilling by fast vibrations and rotation.

Vibrating hole forming device for seismic exploration

Sonic heads and assemblies and uses thereof.

Sonic heads and assemblies and uses thereof.

Vibrational apparatus

DEVICE FOR UNDERGROUND MOVING OF LINES OD.DGL.

Use of a trace element solution comprising a trace element and two complexing agents for metal ions, for the supplementation of nutrients for anaerobic biogas fermentation

MECHANISM AND PROCEDURE FOR MANUFACTURING A BOREHOLE IN THE GROUND.

VIBRATING DRILLING EQUIPMENT FOR SEISMIC EXPLORATION

IMPACT DRILLING FIXTURE

LIQUID OSCILLATION DEVICE FOR DRILL PIPES.

SOUND DRILLING HEAD

DRILLING FIXTURE AND FORMATION SENSOR FOR IT

Apparatus and methods for automated slide drilling

An automated slide drilling system (ASDS) may be used with a drilling rig system to control slide drilling. The ASDS may autonomously control slide drilling without user input during the slide drilling. The ASDS may further support a transition from rotary drilling to slide drilling to rotary drilling without user input during the transitions. The ASDS may also support user input and user notifications for various steps to enable manual or semi -manual control of slide drilling by a driller or an operator.

Vibration reducing drill string system and method

Rotating systems associated with drill pipe

Vibrational apparatus

Vibrational apparatus

Enhanced vibrational or hammering apparatus

Vibrational apparatus to direct stress waves (eg. to a bit 2 or other downhole tool) by generating vibrations as a consequence of shuttling responsive to relative rotational movement between magnetic arrays (4,5) and wherein there is, or can be, a use of a system (6,7) (whether rebound, recoil, spring, pneumatic, magnetic or not) able at least in part to return acquired potential energy in addition to any acquired at the same time by the interacting magnetic arrays. A free travel distance can be provided for one of said components prior to the onset of any substantial collection of energy from the movement (relative) of that component in a direction (eg, uphole) for use in return travel (eg, downhole) preferably synchronized, or synchronizable, to enhance the return travel causing forces of any repulsive and/or attractive forces generated otherwise than by the said magnetic arrays.

Variable force/variable frequency sonic drill head

An oscillator assembly includes a first eccentrically weighted rotor having a first eccentric weight configured to rotate about an axis, a second eccentrically weighted rotor having a second eccentric weight configured to rotate about the axis. Rotation of the first eccentrically weighted rotor is coupled to rotation of the second eccentrically weighted rotor. An actuator is configured to vary an angular separation between the first eccentric weight and the second eccentric weight.

WELDED JOINTS FOR ROTARY-VIBRATORY DRILLS HAVING REDUCED STRESS

A vibratory drilling system and tool for use in downhole drilling operations and method for manufacturing same

A vibratory drilling tool for use coupling to a drill string in a borehole in downhole drilling operations has a tool body having a fluid flow path extending along a longitudinal axis there through, a first pin end and an opposite box end. A cam body portion extending longitudinal along the length of said tool has a generally smooth cam arc section on an opening side with at least one elongated flat surface extending longitudinally along a closing side of the cam body portion from a pin end tapering shoulder to a box end tapering shoulder. The cam body portion when coupled to said drill string lifts a generally horizontal drill pipe section of the drill string vertically in the borehole as the drill pipe section is rotated in the borehole.

Dynamic agitation control apparatus, systems, and methods

In some embodiments, an apparatus and a system, as well as a method and an article, may include operating a positive displacement motor having a pair of output orifices comprising a selectably movable outer output orifice disposed proximate to a fixed inner output orifice. Operation may include rotating the outer output orifice about the longitudinal axis of the motor when drilling fluid is flowing through the pair of orifices to control fluid pressure pulse amplitude from the outer output orifice. Additional apparatus, systems, and methods are disclosed.

Fluid pulse valve

A fluid pulse valve and a method of using the fluid pulse valve are disclosed. The fluid pulse valve comprises an outer housing, a rotor contained within the outer housing, a stator tube surrounding the rotor and adjacent to the outer housing, the stator tube comprising a plurality of slots, and a closer coaxially and rotationally coupled to the rotor and at least a portion of the closer in line with the plurality of slots. As the closer rotates, the closer covers and uncovers the plurality of slots to create a pulse.

Downhole apparatus

METHOD AND APPARATUS FOR GENERATING ACOUSTIC PULSES ON THE SURFACE AND CONVEYING THESE PULSES THROUGH THE DRILL STRING TO THE DRILL BIT TO INCREASE RATE OF DRILLING

A method and apparatus are disclosed for generating intense acoustic pulses by means of water hammer effect on the surface and conveying these pulses through the drill pipe and drill collars down to the drill bit. Intensity of the acoustic pulses is increased in the bit nozzles. Vigorous pulsing of the fluid exiting the bit nozzles results in better cleaning of the hole bottom and faster drilling. By adding a down hole telescopic tool with multiple pistons arranged in series acoustic pulses are converted into a strong mechanical vibration which increases the efficiency of the drill bit and the whole drilling process. Vibration of the drill string reduces the friction between the drill string and the hole resulting in lower torque requirements. By adding a multiple piston telescopic tool above the drill bit and one or few drill collars acoustic pulse is converted into a strong mechanical upward pulse which causes the bottom end of the drill string to vibrate. Rate of drilling is increased ...

METHOD AND APPARATUS TO VIBRATE A DOWNHOLE COMPONENT

An apparatus for use in a wellbore comprises a housing having a longitudinal axis and a mechanism having one or more impact elements adapted to move along the longitudinal axis in an oscillating manner to impart a back and forth force on the housing to vibrate the housing. In another arrangement, an apparatus for use in a wellbore comprises a housing and at least one impact element rotatably mounted in the housing. The at least one impact element is rotatable to oscillate back and forth to impart a vibration force to the housing.

ACOUSTIC FLOW PULSING APPARATUS AND METHOD FOR DRILL STRING

... -35- An underground drilling method and apparatus generates intense pressure pulses at a location at the surface. The pressure pulses propagate down through a drill string to a drill bit. The pulses may be generated by creating water hammer in flowing drilling mud. Intensity of the acoustic pulses is increased in the bit nozzles. Vigorous pulsing of the fluid exiting the bit nozzles results in better cleaning of the hole bottom and faster drilling. The pulses may be used to drive the operation of various down hole tools. One type of tool has multiple pistons arranged in series. High pressure pulses move the pistons to generate strong mechanical vibration in the drill string. Vibration of the drill string may also reduce the friction between the drill string and the hole, resulting in lower torque requirements.

RESONANCE ENHANCED ROTARY DRILLING

A method for controlling a resonance enhanced rotary drill comprising a rotary drill bit and an oscillator for applying axial oscillatory loading to the rotary drill bit, the method comprising: controlling frequency (f) of the oscillator in the resonance enhanced rotary drill whereby the frequency (f) is maintained in the range (D2 Us/(8000pAm))1/2 = f = Sf(D2 Us/(8000pAm))1/2 where D is diameter of the rotary drill bit, Us is compressive strength of material being drilled, A is amplitude of vibration, m is vibrating mass, and Sf is a scaling factor greater than 1; and controlling dynamic force (Fd) of the oscillator in the resonance enhanced rotary drill whereby the dynamic force (Fd) is maintained in the range [(p/4)D2 effUs] = Fd = SFd[(p/4)D2 effUs] where Deff is an effective diameter of the rotary drill bit, Us is a compressive strength of material being drilled, and SFd is a scaling factor greater than 1, wherein the frequency (f) and the dynamic force (Fd) of the oscillator are controlled ...

DOWNHOLE TRACTOR

A method of translating a member through a bore comprises moving fluid through a tubular member such as a drill string (2A), and generating impulses on the member by varying the passage of fluid through the member using a valve (60) which opens at a first rate and closes at a different second rate to urge the member to advance in a selected direction. The valve may close quickly and open slowly, or may close slowly and open quickly.

WEAR RESISTANT VIBRATION ASSEMBLY AND METHOD

A vibration assembly includes a valve above a rotor and stator. The rotor rotates within the stator as fluid flows therethrough. The valve includes a rotating valve segment, which rotates with the rotor, and a non-rotating valve segment each including at least one fluid passage. In an open position, the fluid passages of the valve segments are aligned and a fluid flows through the valve. In a restricted position, the fluid passages of the valve segments are partially or completely unaligned, thereby creating a pressure pulse that is transmitted through the drill string or coiled tubing above the valve. The valve may further include an inner sleeve and an outer sleeve surrounding the non-rotating valve segment. The inner and outer sleeves allow axial sliding but prevent rotation of the non-rotating valve segment. The assembly may further include a lower thrust bearing at a lower end of the rotor.

DRILL SHOE

Drill shoe A drill shoe adapted to fit onto a drill pipe of external diameter de and internal diameter di comprises an externally stepped cutting surface comprising a plurality of steps, the diameters of the steps increasing as they progress away from the tip of the shoe. The maximum external diameter De of the shoe is greater than the external diameter de of the drill pipe. The shoe also comprises an internal, substantially cylindrical, inner surface of diameter Di, Di being less than the internal diameter di of the drill pipe. The shoe is suitable for use in a vibratory drill string for obtaining cores from unconsolidated geological formations, such as soil, sand and gravel or similar materials.

ROTATING DRILL TOOL WITH IMPACT DEVICE

Outil de forage rotatif équipé d'un dispositif de percussion et pourvu d'un élément de commande dirigeant la boue de forage dans l'une ou l'autre de deux voies d'écoulement dont une première voie amène la boue de forage à entraîner une masse de percussion mobile comprise entre ledit élément de commande et une pièce de butée solidaire d'un corps supportant l'outil jusqu'à ce que cette masse percute cette butée. L'outil est caractérisé en ce que l'élément de commande est un élément fluidique de commande dans lequel chacune des deux voies d'écoulement comporte une surface à laquelle la boue de forage peut s'attacher par effet Coanda et en ce que l'arrivée de la masse de percussion sur la pièce de butée provoque le détachement de la boue de forage d'avec ladite surface de la première voie d'écoulement et la commutation de la boue de forage sur la deuxième voie d'écoulement".

DRILLING OSCILLATION SYSTEMS AND SHOCK TOOLS FOR SAME

A shock tool for reciprocating a drillstring includes an outer housing. The outer housing has a central axis, a first end, a second end opposite the first end, and a passage extending axially from the first end to the second end. In addition, the shock tool includes a mandrel assembly coaxially disposed in the passage of the outer housing and configured to move axially relative to the outer housing. The mandrel assembly has a first end axially spaced from the outer housing, a second end disposed in the outer housing, and a passage extending axially from the first end of the mandrel assembly to the second end of the mandrel assembly. The mandrel assembly includes a mandrel and a first annular piston fixably coupled to the mandrel. The first annular piston is disposed at the second end of the mandrel assembly and sealingly engages the outer housing.

VIBRATION GENERATOR FOR A DRILLING INSTALLATION, UNDERWATER DRILLING INSTALLATION AND UNDERWATER DRILLING SYSTEM

A vibration generator (9) for a drilling installation comprises a housing (16), at least one rotation body (17), a suspension (24) by means of which the rotation body is suspended rotatably within the housing, the mass centre of the rotation body (17) being eccentric with respect to the rotation axis of the suspension, and a drive (18) for rotating the rotation body. The housing (16) holds a fluid (15) which is in contact with the rotation body (17) whereby relative rotation between the rotation body and the fluid generates a flow resistance and in that the rotation body comprises flow resistance reduction means (25).

FORCE STACKING ASSEMBLY FOR USE WITH A SUBTERRANEAN EXCAVATING SYSTEM

A force stacking assembly for use with an earth boring system that includes a series of actuators (37) that each generate a force, and that are arranged to create a combined force that is cumulative of all of the actuators. The actuators (37) include members (38) that react in response to an applied stimulus, such as from an electrical current or magnetic field. The members (38) are arranged in series in a hollow housing (26), planar bulkheads (30) are transversely mounted in the housing (26). Each of the members (38) have an end axially abutting a corresponding bulkhead (30). Ends of each member (30) distal from its corresponding bulkhead (30) couple to a ram member (32), that in turn couples to a drill bit (44). Energizing the members (38) causes each to exert a force against the ram member (32), which is transferred to the bit (44).

PREDICTING DAMAGE TO WELLBORE TUBULARS DUE TO MULTIPLE PULSE GENERATING DEVICES

A method includes comparing a natural frequency of a tubular with a frequency of each of at least two pulse generating devices positioned adjacent each other on the tubular, the tubular and the at least two pulse generating devices comprising an energy system; adjusting the frequency of at least one of the at least two pulse generating devices when the frequency is equal to the natural frequency of the tubular and obtaining an adjusted frequency different from the natural frequency; calculating an energy distribution in the energy system based on the natural frequency and the adjusted frequency of the at least one of the at least two pulse generating devices; and determining a new location on the tubular for positioning one or more of the at least two pulse generating devices such that energy introduced into the energy system is less than energy dissipated from the energy system.

SHOCK AND AGITATOR TOOL

A shock and agitator tool assembly vibrates a drill string to overcome stick slip and other friction-based problems that may occur during directional drilling. The agitator tool portion of the assembly, which can be used without the shock tool, allows for controlled activation and deactivation of the agitator tool by the use of one or more darts pumped downhole. The darts can be retrieved with a wireline tool. When activated, the agitator portion creates alternating pressure pulses. These pulses cause axial movement of the drill string above the agitator. A shock tool is described which utilizes a telescoping mandrel to amplify the axial movement created by the agitator tool.

WELDED JOINTS FOR ROTARY-VIBRATORY DRILLS HAVING REDUCED STRESS

A drill string for a rotary-vibratory drill comprises a plurality of drill pipes. Each of the drill pipes has a longitudinal axis and at least one end. A female connector member and a male connector member are between the ends of adjacent said drill pipes, the female connector member having a first portion mating with a first of the adjacent drill pipes and a second portion extending away from the first of the drill pipes. The male connector member has a first portion mating with a second of the adjacent drill pipes and a second portion extending away from the second of the drill pipes, the second portion of the female connector threadedly engaging the second portion of the male connector. One of said each drill pipe and the connectors has a plurality of spaced-apart slots adjacent to the end of the drill pipe and communicating outwardly at the end. The slots are parallel to the longitudinal axis. Each of the connectors is connected to one of the adjacent drill pipes by welding extending ...

DOWNHOLE TOOL SYSTEM AND METHOD

A valve system utilizable with a downhole tool or pulsation assembly for controlling the assembly to reduce friction on a drill string by generating pressure pulsations. The system can include a mandrel cap, and a valve. The valve can include a first end section, a valve bore defined along a longitudinal axis therethrough, one or more ports defined laterally through a sidewall of the valve and in communication with the valve bore, and a second end section defining one or more cavity sections in communication with the valve bore. At least a portion of the valve can be receivable in the cap bore, and the valve bore can be configured to receive fluid from the sub bore or the drill string. The cavity sections can be configured between an open position allowing fluid to pass therethrough and a closed position preventing fluid to pass therethrough.

AN ASSEMBLY AND METHOD FOR DISCHARGING FLUID INTO A DRILL STRING OF A ROTARY-VIBRATORY DRILL

According to one aspect of the invention there is provided a rotary-vibra tory drilling apparatus. The drilling assembly is comprised of a vibratory a pparatus, a rotary drive apparatus, a drill string, a first conduit and a se cond conduit. The first conduit communicates with the second conduit and the second conduit communicates with the drill string. The drilling assembly ma y further include a fluid reservoir communicating with the first conduit. Fl uid may be discharged from the fluid reservoir into the first conduit, fluid may be discharged from the first conduit into the second conduit, and fluid may be discharged from the second conduit into the drill string. The first conduit may be threadedly connected to the second conduit.

VORTEX CONTROLLED VARIABLE FLOW RESISTANCE DEVICE AND RELATED TOOLS AND METHODS

A vortex-controlled variable flow resistance device ideal for use in a backpressure tool for advancing the drill string in extended reach downhole operations. The characteristics of the pressure waves generated by the device are controlled by the growth and decay of vortices in the vortex chamber(s) of a flow path. The flow path is designed to produce alternating primary and secondary vortices -- one clockwise and one counter-clockwise - where the primary vortex is stronger and produces higher backpressure than the secondary vortex. This in turn generates alternating weak and strong pressure pulses in the drill string. The weak pulses may be barely perceptible so that the effective frequency of the pulses is determined by the stronger primary vortices.

DOWNHOLE VIBRATION FOR IMPROVED SUBTERRANEAN DRILLING

A downhole oscillation tool and method for axially vibrating a drill bit. In some embodiments, modular actuation assemblies may be provided, which may be readily interchanged between a housing and a shaft to axially vibrate the shaft with respect to the housing. Modular actuation assemblies may be mechanical, hydraulic, electric, or piezoelectric, for example, and may be characterized by differing oscillation frequencies. In some embodiments, a piezo element may be provided between the housing and the shaft.

DOWNHOLE PULSE GENERATING DEVICE

A pulse generator comprises a stator coupled to a housing and a rotor that is rotatably disposed within the housing. An annulus is formed between the rotor and the stator. An inner bore is formed through the rotor. One or more outer flow ports provide fluid communication between the annulus and the inner bore. A retrievable valve assembly is rotationally coupled to the rotor and at least partially disposed within the inner bore. The retrievable valve assembly includes a rotary valve member having one or more primary flow ports. A fluid flow path is periodically formed by the one or more outer flow ports, the annulus, and the one or more primary flow ports as the rotor rotates.

AGITATOR SUB

A hydraulically driven agitator sub includes: a tubular body for connection within a string including a first mandrel and a second mandrel, and a central bore defining a longitudinal axis of the tubular body and creating a flow path permitting a flow of fluids between the two mandrels and through the tubular body, the second mandrel secured, at least partially, within an annular bore of the first mandrel so that the second mandrel is telescopically arranged with and axially moveable within the first mandrel between a telescopically extended position and a compressed position; and a first sealing part and a second sealing part, one of the first and the second sealing part being secured to the first mandrel and the other sealing part being secured to the second mandrel, both sealing parts being within the fluid flow path of the tubular body, the first sealing part and the second sealing part being positioned to come together when the first mandrel and the second mandrel are in the compressed ...

VIBRATING DOWNHOLE TOOL AND METHODS

A vibrating downhole tool includes a housing having a central axis defined therethrough, an inner mandrel disposed within the housing and configured to receive a drilling fluid, wherein the inner mandrel is misaligned relative to the housing central axis, and a plurality of turbine blades configured to receive the drilling fluid and to rotate the inner mandrel, thereby causing the downhole tool to vibrate.

DRILLING MOTOR VALVE AND METHOD OF USING SAME

A valve (11) for controlling the flow of a drilling fluid through a down- hole tool (10) positionable in a wellbore penetrating a subterranean formation. The down-hole tool has a housing with a drilling motor therein and a drill bit (1) at an end thereof. The drilling motor (9) has a housing with a rotor (206) rotationally movable in a rotor chan-nel (204) as the drilling fluid passes through a rotor channel be-tween the housing and the rotor. The rotor has a bypass channel therethrough for bypassing a portion of the drilling fluid therethrough. The valve includes a valve plate positionable upstream of the motor. The valve plate (200) has at least one flow passage (226) and at least one bypass passage (220) therethrough. The flow passage is in flu-id communication with the rotor channel for passing the drilling flu-id therethrough. The bypass passage is in selective fluid communica-tion with the bypass channel when the rotor rotates about the hous-ing and moves the bypass channel into alignment ...

RESONANT EXTRACTOR SYSTEM AND METHOD

Present embodiments are directed to a resonant extractor system (28) configured to use rotational energy provided by a top drive system (24) to apply vertical oscillating motion to attached tubular or drilling equipment. The extractor (28) includes a rotational component (30, 32), an oscillation component (30, 32), and an assembly of engagement features (60, 64), and the rotational component (30, 32) is coupled with the top drive system (24) such that the top drive system (24) may rotate the rotational component (30, 32) about a vertical axis (65). In certain embodiments, the rotational component (32, 30) is a housing (30), the oscillation component (30, 32) is a quill (32), and the engagement features (60, 64) include a cam (64) disposed on a shaft (60). The shaft (60) is coupled to and extends radially into the housing (30), and the cam (64) disposed on the shaft (60), which features an eccentric geometry relative the shaft (60), maintains contact with a lip (52, 100) extending from the ...

SYSTEM AND METHOD FOR DRILLING HAMMER COMMUNICATION, FORMATION EVALUATION AND DRILLING OPTIMIZATION

A system and method are provided for producing controlled vibrations within a borehole. In one example, the system includes an encoder plate, an anvil plate, and a movement mechanism configured to enable rotational and translational movement of the encoder plate relative to the anvil plate to allow the encoder plate to repeatedly impact the anvil plate to create vibrations. The system also includes a vibration control mechanism configured to control an amplitude of the vibrations.

DOWNHOLE VIBRATORY APPARATUS

The present disclosure is for a vibratory downhole rotary apparatus. The apparatus includes a cylindrical hollow body, a stator disposed within the cylindrical hollow body and a rotor disposed within the stator. The apparatus also includes a flow resistance system to vary the resistance of fluid flow through the apparatus to increase and decrease backpressure across the apparatus.

FLOW PULSING APPARATUS FOR DRILL STRING

... 2101329 9213168 PCTABS00014 This invention relates to flow pulsing apparatus (18) for various applications including downhole drilling equipment and in particular to an improved flow pulsing apparatus of this type to be connected in a drill string (20, 22, 24) above a drill bit (30) with a view to securing improvements in the drilling process.

ULTRASONICALLY GENERATED CAVITATING OR INTERRUPTED JET

VIBRATING HOLE FORMING DEVICE FOR SEISMIC EXPLORATION

A vibrating hole forming device (10) for seismic exploration in which a vertically elongated mounting pipe (22) with attached rack gear (24) is powered vertically by a hydraulically driven pinion gear (46) which will mechanicall y push the pipe downwardly into the earth's surface. A vibrating mechanism (48) im- parts vibration to the downward force exerted by the pinion gear and rack gear. Vibration is imparted to the pipe automatically when hydraulic pressure required to operate the pinion gear reaches a predetermined pressure such as when the point (50) on the lower end of the pipe encounters a predetermined resistanc e to further downward movement. This enables a lightweight unit to impart a constant downward force and a vibration force when needed to enable the device to pen e- trate through sands or extremely dense subsurface terrain thereby eliminatin g the necessity of providing a heavy weight vehicle such as is required when conve n- tional hole forming devices are used on which ...

WELLBORE RESONANCE TOOLS

The present invention provides a system for performing a suitable operation in a wellbore utilizing a resonator (74). The system includes a resonator (74) for generating pulses of mechanical energy, an engaging device (92) for securely engaging an object in the wellbore and a sensor (68a) for detecting the response of the object to pulses generated by the resonator (74). The resonator (74) is placed at a suitable location in the wellbore and the engaging device (92) is attached to the object. The resonator (74) is operated at an effective frequency to induce pulses into the object. The sensor (68a) detects the response of the object to the induced pulses, which information is utilized to adjust the operating frequency. The system in different configurations can be used to fish, free a stuck drill string, aid drilling of wellbores and to perform a cementing operation. A control circuit (78) controls the operation of the system according to programmed instructions.

Verfahren und Vorrichtung zur Durchführung von Erdbohrungen.

Gesteinsbohreinrichtung.

Einrichtung zum Abräumen von Feststoffen

Schachtbohr- oder Streckenvortriebsgerät

Bohrgerät mit einem Bohrwerkzeug

Vibrator

Appareillage de production et d'exploitation d'une énergie électrique associé à une machine de forage

Rüttler zum Verdichten des Erdreiches und zum Herstellen von Löchern im Erdreich

Bohrverfahren und Einrichtung zur Ausführung desselben

Устройство для бурения протяженных горизонтальных скважин

Полезная модель относится к нефтегазодобывающей промышленности и предназначена для бурения нефтяных и газовых скважин с протяженными горизонтальными окончаниями, в частности может быть применима в компоновке низа бурильной колонны (КНБК).Целью полезной модели является разработка устройства, которое позволит увеличить технико-экономические показатели бурения, посредством предупреждения прихвата бурильной колонны за счет создания оптимальной нагрузки на долото, т.е. разработка элемента низа бурильной колонны и расширение функциональных возможностей, которые позволят бурить протяженные горизонтальные участки ствола скважины, и ликвидировать недохождение бурильного инструмента до проектной глубины забоя.Технический результат - изменение силы трения покоя на силу трения скольжения, ввиду этого значительно уменьшается сопротивление движению бурового инструмента.Поставленная цель достигается тем, что устройство содержит цилиндрический корпус со встроенными роликами, часть из которых является точками опоры, находящимися на определенном расстоянии друг от друга. Встроенные ролики соприкасаются со стенками ствола скважины, вращаются и придают движение вперед всей компоновке низа бурильной колонны. Вращение встроенных роликов происходит за счет прохождения потока промывочной жидкости и силы трения скольжения в цилиндрическом корпусе. Узел управления позволяет фиксировать пространственные параметры скважины, параметры режима бурения (осевая нагрузка, расход промывочной жидкости, частота вращения породоразрушающего инструмента и т.п.). РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 185 927 U1 (51) МПК E21B 23/04 (2006.01) E21B 17/10 (2006.01) E21B 7/24 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК E21B 23/04 (2018.08); E21B 17/1057 (2018.08); E21B 7/24 (2018.08) (21)(22) Заявка: 2018120565, 04.06.2018 (24) Дата начала отсчета срока действия патента: Дата регистрации: Приоритет(ы): (22) Дата подачи заявки: 04.06.2018 (45) ...

System and method for drilling a borehole

A system and method is provided for drilling a wellbore using a rotary drill bit with a bit body having a plurality of mechanical cutters to cut away formation material as the wellbore is formed; and a directed energy mechanism to direct energy into the formation. The energy from the directed energy mechanism is used to enhance the cutting of the mechanical cutters by fracturing surrounding material to facilitate drilling in the direction of the directed energy.

Vortex Controlled Variable Flow Resistance Device and Related Tools and Methods

A vortex-controlled variable flow resistance device ideal for use in a backpressure tool for advancing drill string in extended reach downhole operations. The characteristics of the pressure waves generated by the device are controlled by the growth and decay of vortices in the vortex chamber(s) of a flow path. The flow path includes a switch, such as a bi-stable fluidic switch, for reversing the direction of the flow in the vortex chamber. The flow path may include multiple vortex chambers, and the device may include multiple flow paths. A hardened insert in the outlet of the vortex chamber resists erosion. This device generates backpressures of short duration and slower frequencies approaching the resonant frequency of the drill string, which maximizes axial motion in the drill sting and weight on the bit. Additionally, fluid pulses produced by the tool enhance debris removal ahead of the bit.

Acoustic generator and associated methods and well systems

A well system and associated method can include an acoustic generator which can be used to excite a formation with acoustic waves transmitted from the acoustic generator. Another well system and associated method can include an acoustic generator which can transmit acoustic waves into cement surrounding a casing. Another well system and associated method can include an acoustic generator which can be used to transmit acoustic waves into an annulus surrounding a well screen during or after a gravel packing operation. Another well system and associated method can include an acoustic generator which can be connected in a drill string in close proximity to a drill bit, with the acoustic generator transmitting acoustic waves into a formation ahead of the bit.

RESONANCE ENHANCED DRILLING: METHOD AND APPARATUS

The present invention relates to drilling apparatus comprising a drill-bit () capable of rotary and high frequency oscillatory loading; and control means for controlling applied rotational and/or oscillatory loading of the drill-bit, the control means having adjustment means for varying the applied rotational and/or oscillatory loading, said adjustment means being responsive to conditions of the material through which the drill is passing. The control means is in use provided on the apparatus in a downhole location and includes sensors for taking downhole measurements of material characteristics, whereby the apparatus is operable downhole under closed loop real-time control. The apparatus can determine appropriate loading parameters for the drill-bit in order to achieve and maintain resonance between the drill-bit and the drilled material in contact therewith. 1. (canceled)2. (canceled)3. (canceled)4. (canceled)5. (canceled)6. (canceled)7. (canceled)8. (canceled)9. (canceled)10. (canceled)11. (canceled)12. (canceled)13. (canceled)14. (canceled)15. (canceled)16. (canceled)17. (canceled)18. (canceled)19. (canceled)20. (canceled)21. (canceled)22. (canceled)23. (canceled)24. (canceled)25. (canceled)26. A drilling module comprising:a rotary drill-bit;an oscillator configured to apply high frequency axial oscillatory loading to the rotary drill-bit, of up to 1 kHz;a vibro-transmission section connecting the rotary drill-bit and the oscillator, the vibro-transmission section configured to transmit the high frequency axial oscillatory loading from the oscillator to the rotary drill-bit;a vibrational isolation unit for connecting the drilling module to a drill-string, the vibrational isolation unit being configured to isolate the high frequency axial oscillatory loading from the drill-string;sensors for taking downhole measurements; anda controller configured to operate downhole under closed loop real-time control by utilizing the downhole measurements from the sensors to ...

Radial vibrational apparatus

A downhole assembly able to generate a vibrational output reliant upon a fluid feed drive to cause relative rotation extending magnetic arrays and thereby a relative longitudinal vibration causing reciprocation.

Method and apparatus of distributed systems for extending reach in oilfield applications

Apparatus and a method for delivering a rod in a cylinder including propagating a rod in a cylinder along the interior of the cylinder, and introducing a motion in an orientation orthogonal to a length of the rod, wherein the motion comprises multiple motion sources along the length of the rod, and wherein the multiple motion sources comprise a control system that controls at least one of the motion sources. An apparatus and method for delivering a rod in a cylinder including a cylinder comprising a deviated portion, a rod comprising a length within the cylinder, multiple motion sources positioned along the length of the rod, and a control system in communication with at least one of the motion sources, wherein the control system controls the location of frictional contact between the rod and cylinder over time.

Method and Apparatus for Vibrating Horizontal Drill String to Improve Weight Transfer

An apparatus for use in a horizontal section of a drill string is disclosed. The apparatus includes a motor that is connected to the horizontal section of the drill string. The motor is adapted to impart vibrations in the horizontal section of the drill string, where the vibrations are at about the lateral resonant frequency of the horizontal section of the drill string. 1. An apparatus for use in a horizontal section of a drill string comprising:a motor, wherein the motor is connected to the horizontal section of the drill string, wherein the motor is adapted to impart vibrations in the horizontal section of the drill string and wherein the vibrations are at about a lateral resonant frequency of the horizontal section of the drill string.2. The apparatus of claim 1 , wherein the vibrations are at about the lowest lateral resonant frequency3. The apparatus of claim 2 , wherein the vibrations are in the frequency range of 1 to 10 Hz.4. The apparatus of claim 3 , wherein the vibrations are in the frequency range of 2 to 5 Hz.5. The apparatus of claim 1 , wherein the motor is a mud motor or an electrical motor.6. A mud motor for use in a horizontal section of a drill string comprising:a rotor;a stator engaged with a drive train to rotate at a rotary speed, wherein the drive train; anda mandrel mechanically connected to the drive train, wherein the mandrel is adapted to generate vibrations in the horizontal section of the drill string in a selected frequency range of 1 to 10 Hz.7. The mud motor of claim 6 , wherein the mandrel is provided with at least one cutout.8. The mud motor of claim 6 , wherein the drive train includes a drive shaft and further comprising two eccentric masses attached to the drive train claim 6 , wherein the eccentric masses are about 180° apart.9. The mud motor of claim 8 , further comprising a bypass nozzle.10. A mud motor for use in a horizontal section of a drill string comprising:a rotor;a stator engaged with a drive train to rotate at a ...

DRIVE DEVICE AND METHOD FOR DRIVING A DRILL ROD

The invention relates to a drive device for driving a drill rod, which has an outer rod and an inner rod, with a first rotary drive unit, with which the outer rod can be driven in a rotating manner via an outer drive shaft, a second rotary drive unit, with which the inner rod can be driven in a rotating manner independently of the outer rod via an inner drive shaft, and a vibration unit for generating a vibration, which has a vibration element that can be driven in a vibrating manner. For transmission of the vibration to the outer drive shaft the vibration element is connected via a first transmission unit to the outer drive shaft and for transmission of the vibration to the inner drive shaft the vibration element is connected via a second transmission unit to the inner drive shaft. The invention relates to a drive device for driving a drill rod, which has an outer rod and an inner rod, in accordance with the preamble of claim . Furthermore, the invention relates to a method for driving a drill rod in accordance with the preamble of claim .The drive device comprises a first rotary drive unit, with which the outer rod can be driven in a rotating manner via an outer drive shaft, a second rotary drive unit, with which the inner rod can be driven in a rotating manner independently of the outer rod via an inner drive shaft, and a vibration unit for generating a vibration, which has a vibration element that can be driven in a vibrating manner.In the method provision is made in that by means of a first rotary drive unit the outer rod is driven in a rotating manner via an outer drive shaft, in that by means of a second rotary drive unit the inner rod is driven in a rotating manner independently of the outer rod via an inner drive shaft and in that by means of a vibration unit a vibration is generated.The drive device is especially provided for the so-called double-head drilling, in which an outer rod and an inner rod received therein are driven by two independent rotary ...

Pulsating rotational flow for use in well operations

A system for use with a subterranean well can include a fluid oscillator which discharges pulsating fluid from a tubular string in a direction at least partially toward an end of the tubular string proximate a surface of the earth. A method can include discharging a fluid from the tubular string, thereby applying a reaction force to the tubular string, which reaction force biases the tubular string at least partially into the well. Another method can include discharging a pulsating fluid from a fluid oscillator in a direction at least partially toward an end of the tubular string, and drilling into an earth formation with a drill bit connected at an opposite end of the tubular string in the well.

Systems and methods for sonic subsurface material removal

A system for removing desired subsurface materials. A drilling system has a sonic drill head assembly capable of rotating a drill string and transmitting oscillating forces to the drill string. A material removal system comprises an outer tube attachable to the drill string. An inner tube has an outer diameter sized so that that at least a portion of the inner tube is positionable in an inner volume of the outer tube with an annular void defined between the outer tube and the inner tube. A distal end of the inner tube defines at least one opening such that an interior conduit of the inner tube is in fluid communication with the annular void outside of the distal end of the inner tube. Pressurized fluid can be urged from the annular void through the opening to the interior conduit, entraining the desired subsurface materials therein for removal to a discharge tank.

MECHANICAL FORCE GENERATOR FOR A DOWNHOLE EXCITATION APPARATUS

An excitation apparatus suitable for use downhole having interengaged masses at least in part confined or guided so as to be movable as an interengaged assembly on an axis, one mass (“rotatable mass”) being rotatable relative to the other mass about the axis to cyclically vary the axial length of the assembly of the interengaged masses, a rotary drive, and an interposed spring (of any kind) between the rotary drive and the rotatable mass able to transmit torque from the rotary drive to the rotatable mass yet vary in its extent responsive to the interengaged masses. 159-. (canceled)60. Apparatus to operate as a mechanical force generator with an at least near sinusoidal output or as a mechanical excitation device with an at least near sinusoidal output , the apparatus having a longitudinal axis and comprising or including:an elongate inner member axially aligned to the longitudinal axis,a mass disposed about the inner member and able to reciprocate relative thereto in the longitudinal direction,an outer member about at least part of the mass and about at least part of the inner member and in respect of which the mass can move axially in the longitudinal direction yet is constrained from any substantial rotation relative to the outer member about the longitudinal axis,a rotatable member able to rotate about the longitudinal axis and directly and/or indirectly upon its rotation to cause axial reciprocation of the mass relative to said outer member, anda rotary drive to provide directly or indirectly a rotational input to the rotatable member;wherein without impacts or impacts of significance there is an output pathway from the mass into the outer member.61. Apparatus of wherein the mass and rotatable member interact whereby more than one reciprocation occurs for each rotation of the rotatable member.62. Apparatus of wherein there is an interposed spring between the rotary drive and the rotatable member is able to transmit torque yet allow a relativity of axial movement ...

Sonic Tooling Handling Apparartus With Pipe Tong And Method

A sonic tooling handling apparatus includes a gantry support structure with a base frame structure and an overhead frame structure operatively coupled to the base frame structure. The overhead frame structure has a pair of longitudinal beams and a transverse beam coupled to the pair of longitudinal beams. The transverse beam is movable along each of the pair of longitudinal beams. The gantry support structure includes a lifting device coupled to the transverse beam and is movable along part of the transverse beam. The lifting device includes a sonic tooling clamp. The lifting device may raise or lower sonic tooling held by the sonic tooling clamp. The sonic tooling apparatus further includes a removable sonic tooling holding rack having a plurality of stanchions creating at least one sonic tooling holding space for holding sonic tooling. A method of handling sonic tooling and a pipe tong is also disclosed. 1. A sonic tooling handling apparatus comprising: a base frame structure,', 'an overhead frame structure operatively coupled to the base frame structure, the overhead frame structure having a pair of longitudinal beams with each longitudinal beam having a length and a transverse beam having a length coupled to the pair of longitudinal beams, the transverse beam being movable along at least a part of the length of each of the pair of longitudinal beams, and', 'a lifting device operatively coupled to the transverse beam and movable along at least part of the transverse beam, the lifting device includes a sonic tooling clamp configured to clamp onto sonic tooling, the lifting device configured to raise or lower sonic tooling held by the sonic tooling clamp;, 'a gantry support structure includinga sonic tooling holding rack having a plurality of stanchions configured to create at least one sonic tooling holding space for holding sonic tooling, the sonic tooling holding rack being configured to be removably mounted on the base frame structure of the gantry support ...

VIBRATORY APPARATUS FOR DRILLING APPARATUS

Disclosed is a vibratory apparatus for a drilling apparatus comprising: a housing, a rotor operable to rotate relative to the housing, the rotor comprising one or more sets of magnets, a shuttle engaged to enable movement longitudinally, the shuttle comprising one or more follower magnets, each arranged relative to a corresponding set of magnets in the rotor, wherein each set of magnets comprises magnets arranged around the rotor with a lateral spread such that on rotation the corresponding follower magnet on the shuttle will move longitudinally to follow one or more rotating magnets of the set, thus oscillating the shuttle longitudinally. 1. A vibratory apparatus for a drilling apparatus comprising:a housinga rotor operable to rotate relative to the housing, the rotor comprising one or more sets of magnets,a shuttle engaged to enable movement longitudinally, the shuttle comprising one or more follower magnets, each arranged relative to a corresponding set of magnets in the rotor,wherein each set of magnets comprises magnets arranged around the rotor with a lateral spread such that on rotation the corresponding follower magnet on the shuttle will move longitudinally to follow one or more rotating magnets of the set, thus oscillating the shuttle longitudinally.2. The vibratory apparatus according to wherein the magnets are arranged at an oblique angle around at least a portion of the rotor to provide the lateral spread.3. The vibratory apparatus according to wherein the magnets are arranged sinusoidally or near sinusoidally around the rotor to provide the lateral spread.4. The vibratory apparatus according to wherein the follower magnets are arranged along the shuttle.5. The vibratory apparatus according to where the shuttle is engaged to the housing via a spline to rotationally constrain and enable movement longitudinally of the shuttle relative to the housing and/or rotor.6. The vibratory apparatus according to wherein the shuttle oscillates sinusoidally or near ...

DRILLING TOOL WITH NON-SYNCHRONOUS OSCILLATORS AND METHOD OF USING SAME

Apparatus and method for drilling a wellbore using non-synchronous oscillators. An apparatus for drilling a wellbore includes a tubing string and a bottom hole assembly coupled to the tubing string. The bottom hole assembly includes a first oscillator and a second oscillator. The first oscillator is configured to restrict fluid flow and induce pressure pulses in the tubing string at a first frequency. The second oscillator is configured to restrict fluid flow and induce pressure pulses in the tubing string at a second frequency. The first frequency is different from the second frequency. 1. Apparatus for drilling a wellbore , comprising:a tubing string; and a first oscillator configured to restrict fluid flow and induce pressure pulses in the tubing string at a first frequency; and', 'a second oscillator configured to restrict fluid flow and induce pressure pulses in the tubing string at a second frequency;', 'wherein the first frequency is different from the second frequency., 'a bottom hole assembly coupled to the tubing string, the bottom hole assembly comprising2. The apparatus of claim 1 , wherein the first frequency is an integer multiple of the second frequency.3. The apparatus of claim 1 , wherein the first frequency is three times the second frequency.4. The apparatus of claim 1 , wherein the first frequency is five times the second frequency.5. The apparatus of claim 1 , wherein the first oscillator is configured to restrict the fluid flow in the tubing string over a range of frequencies starting at an initial frequency and ending at a final frequency.6. The apparatus of claim 1 , wherein the tubing string comprises coiled tubing or a plurality of drill pipes.7. The apparatus of claim 1 , wherein the first frequency is selected to induce pressure pulses in the tubing string to correct helical buckling of the tubing string and the second frequency is selected to induce pressure pulses in the tubing string to correct sinusoidal buckling of the tubing string. ...

TUNABLE WELLBORE PULSATION VALVE AND METHODS OF USE TO ELIMINATE OR SUBSTANTIALLY REDUCE WELLBORE WALL FRICTION FOR INCREASING DRILLING RATE-OF-PROGRESS (ROP)

A tunable wellbore pulsation valve reduces drillstring friction in a wellbore. An upper valve plate and a lower valve plate, and upper valve plate orifice and lower valve plate orifice enabling throughflow. A Moineau motor rotates the upper valve plate while the lower valve plate remains stationary. Fluid flow causes a first fluid state of fluid passing through both the upper valve plate and the lower valve plate when the fluid passing causes rotation of the upper valve plate to align the upper valve plate orifice with the lower valve plate orifice. Increased flow efficiency produces more powerful fluid pressure pulsations and axial vibrations without increasing pump pressure at the surface of the wellbore, yielding increased wellbore friction reduction while expending the same or less energy at the surface pump than would be expended in the absence of the reduced turbulent and shear conditions and increased laminar conditions. 1. A tunable wellbore pulsation valve for reducing drillstring friction in a wellbore , said tunable wellbore pulsation valve comprisingan upper valve plate anda lower valve plate,wherein said upper valve plate comprises an upper valve plate orifice enabling throughflow and said lower valve plate comprises a lower valve plate orifice enabling throughflow,said upper valve plate associated with a Moineau motor and shouldered against a rotor outlet of said Moineau motor, said upper valve plate rotating during fluid rotation of said Moineau motor, while said lower valve plate remains stationary, wherein said upper valve plate and said lower valve plate are configured for receiving and flowing helical fluid flow progressing centripetally outward from a central axis of said tunable wellbore pulsation valve as said helical fluid flow exits said rotor outlet of said Moineau motor,wherein fluid flow through a drillstring causes a first fluid state of fluid passing through both said upper valve plate and said lower valve plate when said fluid passing ...

SELF-POWERED ACTIVE VIBRATION AND ROTATIONAL SPEED SENSORS

Self-powered active sensing systems (SASS) for use in downhole drilling environments are disclosed. Sensor devices of the SASS can include a self-powered rotational speed sensor including a ring structure attached around a drill string. The ring rotates within a groove formed in an outer housing. Bearings on the ring are arranged to contact moveable members extending from the housing into the groove thereby causing the moveable member to generate an electrical signal representing rotational speed. The SASS can include a vibration sensor having a ring spring mounted within a housing. Spherical bearings on the outer surface of the ring are configured to contact screens that are mounted to the housing and that generate a signal representing movement of the bearing/ring from vibration. Multiple SASS units configured to wirelessly transmit sensor data can be placed along a drill string providing a distributed self-powered system for measuring downhole parameters. 1. A self-powered active sensing system for use in a downhole drilling environment , the system comprising: [ a bearing extending from an outer surface of the first structure;', 'a housing disposed about the first structure and the portion of the drill string, wherein the housing includes:', 'an interior wall that defines a hollow central opening of a sufficient diameter for the drill string to extend therethrough, wherein the interior wall is shaped to define an annular groove extending circumferentially about the central opening, wherein the ring is housed at least partially within the annular groove and rotatable relative to the housing, and', 'a moveable member housed within a recess formed in the interior wall and that extends into the annular groove, wherein the moveable member opposes the bearing, wherein upon rotation of the first structure relative to the housing, the bearing is configured to contact the moveable member and wherein the moveable member is configured to translate into the recess as a ...

HYDRAULICALLY ACTUATED APPARATUS FOR GENERATING PRESSURE PULSES IN A DRILLING FLUID

An apparatus for generating pressure pulses in a drilling fluid flowing through a bore of a downhole tubular. A housing containing a rotor is located in the bore. Drilling fluid flowing through the housing actuates rotation of the rotor relative to the housing, which in turn drives movement of an actuator valve assembly to vary flow of drilling fluid between the bore and an actuator chamber defined by the actuator valve assembly and the housing. The resulting variation in drilling fluid pressure within the actuator chamber actuates a pulse valve assembly to vary flow of drilling fluid through the housing and into the bore. The varying drilling fluid pressure may be used to induce a percussive effect in a drill bit assembly coupled to the downhole tubular. 1. An apparatus for use with a downhole tubular defining a bore for conveying a drilling fluid between a proximal end and a distal end of the bore , the apparatus comprising: (i) a power flow path in drilling fluid communication with the bore via a power flow path inlet and a power flow path outlet;', '(ii) an actuator flow path in drilling fluid communication with the bore via an actuator flow path inlet and an actuator flow path outlet;', '(iii) a pulse flow path in drilling fluid communication with the bore via a pulse flow path inlet and a pulse flow path outlet;, '(a) a housing for location in the bore and internally defining(b) a fluid actuated positive displacement motor comprising a rotor internal to the housing wherein, in use, rotation of the rotor relative to the housing is actuated by the drilling fluid flowing through the power flow path; (i) an actuator valve stationary member defining an actuator valve passage for drilling fluid communication from the actuator chamber to the bore via the actuator flow path outlet; and', '(ii) an actuator valve moving member wherein the rotor is in driving engagement with the actuator valve moving member to, in use, drive movement of the actuator valve moving member ...

A sonic/ultrasonic-assisted method for the compaction and injection of granular slurries and pastes in the subsurface

A compaction and/or hydro fracture generation device ( 10 ) comprises a compression device ( 11 ), a vibration generator device ( 12 ) arranged to generate vibrations in the ultrasonic frequency range, and a power source connected to the vibration generator.

APPARATUS AND METHOD FOR INDUCING LONGITUDINAL OSCILLATIONS IN SUBTERRANEAN DRILLING STRING

A cavitation apparatus (CHRS) for use in subterranean drilling with a drilling rig, the rig having a drill bit and a drilling string mounted thereto through which a drilling fluid flows to the drill bit. The cavitation apparatus (CHRS) is adapted to be mounted in-line with the drilling string through which the drilling fluid flows. The CHRS has no moving parts and produces controlled low frequency, longitudinal fluctuations of at least a portion of a drill string to enhance the drilling rate of penetration (ROP). Optionally the entire drill string can be subjected to such controlled low frequency, longitudinal fluctuations.

ROTARY STEERABLE SYSTEM WITH A STEERING DEVICE AROUND A DRIVE COUPLED TO A DISINTEGRATING DEVICE FOR FORMING DEVIATED WELLBORES

A rotary drilling apparatus for drilling deviated wellbores Is disclosed that in one embodiment includes a drilling assembly that further includes a drilling motor coupled to a drive member to rotate a disintegrating device, a housing outside the drive member having a lower section and an upper section, and a steering device disposed outside the drive member that tilts the lower section relative to the upper section and maintains the tilt geostationary or substantially geostationary when the drilling assembly is rotating to drill a deviated section of the wellbore. 1. A rotary steerable drilling assembly , comprising:a drilling motor coupled to a drive member to rotate a disintegrating device;a housing outside the drive member having a first section and a second section; anda steering device that tilts the first section relative to the second section and maintains the tilt substantially geostationary when the drilling assembly is rotating to drill a deviated section of the wellbore.2. The drilling assembly of claim 1 , wherein the steering device includes: an actuation device; and a tilt device coupled to the first section and second section; and wherein the actuation device applies selected forces onto the tilt device to cause the first section to tilt relative to the second section.3. The drilling assembly of claim 2 , wherein the tilt device includes an adjuster coupled to a joint and wherein the actuation device applies the selected forces onto the adjuster to cause the first section to tilt relative to the second section about the joint.4. The drilling assembly of claim 2 , wherein the actuation device includes one or more spaced apart actuators claim 2 , and wherein each such actuator applies a selected force on the adjuster to tilt the first section relative to the second section.5. The apparatus of claim 4 , wherein each actuator rotates when the drilling assembly rotates and applies force on the adjuster during each revolution of the drilling assembly.6. ...

Fluid pulse valve

A fluid pulse valve and a method of using the fluid pulse valve are disclosed. The fluid pulse valve comprises an outer housing, a rotor contained within the outer housing, a stator tube surrounding the rotor and adjacent to the outer housing, the stator tube comprising a plurality of slots, and a closer coaxially and rotationally coupled to the rotor and at least a portion of the closer in line with the plurality of slots. As the closer rotates, the closer covers and uncovers the plurality of slots to create a pulse.

System and method for cleaning of a drill bit

A system for cleaning of a drill bit, comprises a vibration generator arranged to generate vibrations in the ultrasonic frequency range in at least parts of the drill bit, and a power source connected to the vibration generator. 1. System for cleaning of a drill bit , comprising:a vibration generator arranged to generate vibrations in the ultrasonic frequency range in at least parts of the drill bit to cause a drop in viscosity of cuttings surrounding the drill bit, anda power source connected to the vibration generator.2. System according to claim 1 , further comprising a controller unit connected to the vibration generator to control the vibration generator to generate vibrations in a frequency range that will cause vibro-fluidization of the cuttings.3. System according to claim 1 , where the vibration generator is a piezoelectric or magnetostrictive transducer.4. System according to claim 1 , where the vibrations are guided into flow channels in the bit and in the cutters of the bit.5. System according to claim 1 , where the vibrations are in the area 20 kHz and above.6. System according to claim 1 , where the vibration generator is arranged to co-rotate with the rotation of the drill bit.7. System according to claim 6 , where the power source is connected to the vibration generator by means of induction or a rotary union.8. System according to claim 6 , where the vibration generator is incorporated in the drill bit.9. Method for cleaning of drill bit claim 6 , comprising:generating vibrations in at least parts of the drill bit surface in the ultrasonic frequency range to cause a drop in viscosity of cuttings surrounding the drill bit.10. Method according to claim 9 , further comprising controlling the vibration generator a by means of a controller unit connected to the vibration generator to generate vibrations in a frequency range that will cause vibro-fluidization of the cuttings.11. Method according to claim 9 , where the vibration generator is a ...

DOWNHOLE OSCILLATION APPARATUS

A downhole oscillation tool includes a Moineau-type positive displacement pulse motor and a valve assembly for use in a drill string. The pulse motor includes a rotor configured to nutate within the bore of a stator. The rotor has at least two helical lobes that extend the length of the rotor, and the stator bore defines at least three helical lobes that extend the length of the stator. The valve assembly includes a first valve plate connected to the bottom end of the rotor and abuts the second valve plate to form a sliding seal. The second valve plate is fixedly coupled to the stator and remains stationary. First valve ports extend axially through the first valve plate, and second valve ports extend axially through the second valve plate. The first valve ports and second valve ports intermittently overlap as the first valve plate slides across the second valve plate to create pulses in the drilling fluid which is pumped through the tool to power the motor and valve assembly. The tool can generate pulses of different amplitudes and different wavelengths in each rotational cycle. The tool further includes a drop ball assembly configured to activate and deactivate the tool. 1. A downhole oscillation tool for a drill string , the downhole oscillation tool comprising: a rotor having at least two helical lobes along a length of the rotor; and', 'a stator surrounding a stator bore, the stator having at least three helical lobes along a length of the stator, wherein the rotor is located in the stator bore and configured to nutate within the stator;, 'a pulse motor including a first valve plate configured to nutate with the rotor, the first valve plate including a plurality of first ports;', 'a second valve plate located downstream from the first valve plate, the second valve plate including a plurality of second ports, wherein the second valve is fixedly coupled to the stator and plate abuts the first valve plate to form a sliding seal, and wherein at least one of the ...

SYSTEM AND METHOD FOR USING CONTROLLED VIBRATIONS FOR BOREHOLE COMMUNICATIONS

A system and method are provided for producing controlled vibrations within a borehole. In one example, the system includes a movement mechanism and a vibration control mechanism. The movement mechanism is configured to use mechanical energy provided by a mechanical energy source to enable translational movement of a first surface relative to a second surface to allow the first surface to repeatedly impact the second surface to produce a plurality of vibration beats, where the vibration beats will occur whenever the mechanical energy is provided by the mechanical energy source unless the provided mechanical energy is dampened to prevent the translational movement. The vibration control mechanism is configured to selectively control an amplitude of the vibration beats to encode information therein, where the amplitude of a vibration beat is selectively controlled by dampening the provided mechanical energy to regulate the impact of the first surface and the second surface. 1. A system for producing controlled vibrations within a borehole comprising:a movement mechanism configured to use mechanical energy provided by a mechanical energy source to enable translational movement of a first surface relative to a second surface to allow the first surface to repeatedly impact the second surface to produce a plurality of vibration beats, wherein the vibration beats will occur whenever the mechanical energy is provided by the mechanical energy source unless the provided mechanical energy is dampened to prevent the translational movement; anda vibration control mechanism configured to selectively control an amplitude of the vibration beats to encode information therein, wherein the amplitude of a vibration beat is selectively controlled by dampening the provided mechanical energy to regulate the impact of the first surface and the second surface.2. The system of wherein the vibration beats occur at a fixed frequency unless the mechanical energy is dampened to prevent the ...

System and method for steering in a downhole environment using vibration modulation

A system and method are provided for using controlled vibrations to bias a drilling direction of a bottom hole assembly (BHA) in a borehole. In one example, the system includes a movement mechanism and a vibration control mechanism. The movement mechanism is configured to use mechanical energy provided by a mechanical energy source to enable translational movement of a first surface relative to a second surface to allow the first surface to repeatedly impact the second surface to produce a plurality of vibration beats. The vibration control mechanism is configured to influence a drilling direction in which the BHA is drilling by controlling an amplitude of the vibration beats to regulate an impact force between the first surface and the second surface, where the amplitude is controlled based on directional information corresponding to the BHA.

Maintaining Dynamic Friction in a Wellbore Through Harmonic Rotary Oscillations

Techniques are disclosed which acts to maintain a drillstring in dynamic friction during geo-steering operations when the drillstring is not rotating. Embodiments of the invention include a drilling system having a drillstring coupled to a top drive or a kelly, and a method of estimating a frictional torque along the drillstring to compute an oscillatory rotary input to the top drive or the kelly based on an input period or amplitude received at a human machine interface. A rotary control signal based on the oscillatory rotary input is transmitted to the top drive or the kelly via a variable-frequency drive (VFD) motor control system. The drillstring can be further coupled to a sensor and the feedback from the sensor can be monitored for proper operation to adjust the oscillatory rotary input during the geo-steering operations. 1. A method for imparting a harmonic rotary oscillation to a drillstring during a wellbore construction process , comprising the steps of:determining an estimate of a torsional friction along a drillstring of a drilling system to determine a desired amplitude of a rotary oscillatory motion based at least partially on drilling parameters comprising an oscillatory period or frequency transmitted to at least one motor coupled to the drilling system;generating a rotary control signal based at least partially on the desired amplitude of the rotary oscillatory motion when the drilling system is activated;transmitting the rotary control signal to the at least one motor via a variable-frequency drive (VFD); andmonitoring the drilling system to determine whether a bottom hole assembly (BHA) of the drilling system remains stationary, the BHA coupled to the drillstring.2. The method of claim 1 , further comprising the steps of:reducing the desired amplitude of the rotary oscillatory motion upon detecting that the BHA is not stationary; andtransmitting a new rotary control signal based at least partially on the reduced amplitude of the rotary oscillatory ...

SHOCK AND VIBRATION TOOL MODELING

A system for simulating a downhole operation including a computing device having a computing processor and computer-readable media storing computer-executable instructions that cause the computing device to use bottomhole assembly parameters, wellbore parameters, drilling operating parameters, and vibration tool parameters or shock tool parameters, to execute a first simulation to generate first performance parameters. The instructions are also configured to cause the computing device to use the BHA parameters, wellbore parameters, drilling operating parameters, and a second set of vibration tool parameters or shock tool parameters to execute a second simulation to generate second performance parameters. By comparing the first and second simulations, a bottomhole assembly may be evaluated, modified, selected, or designed. 1. A system for simulating a downhole operation , comprising:a computing device including a computing processor; and use bottom hole assembly (BHA) parameters, wellbore parameters, drilling operating parameters, and at least a first set of one or more of vibration tool parameters or shock tool parameters, to execute a first simulation to generate first performance parameters;', 'use the BHA parameters, wellbore parameters, drilling operating parameters, and at least a second set of one or more of vibration tool parameters or shock tool parameters to execute a second simulation to generate second performance parameters; and', receive the BHA parameters, wellbore parameters, drilling operating parameters, first set of one or more of vibration tool parameters or shock tool parameters, and second set of one or more of vibration tool parameters or shock tool parameters;', 'present, on the graphical user interface, the first performance parameters generated from the first simulation;', 'modify at least one parameter of the first set of one or more of vibration tool parameters or shock tool parameters to obtain the second set of one or more of vibration ...

RESONANCE ENHANCED ROTARY DRILLING MODULE

Provided is apparatus for use in resonance enhanced rotary drilling, which apparatus comprises: 3. An apparatus according to claim 1 , wherein the dynamic exciter comprises a magnetostrictive exciter claim 1 , and preferably comprises a PEX-30 oscillator from Magnetic Components AB.4. An apparatus according to or claim 1 , wherein the vibration transmission unit comprises a structural spring.5. An apparatus according to claim 2 , wherein the oscillator comprises an electrically driven mechanical actuator claim 2 , and preferably comprises a VR2510 actuator from Vibratechniques Ltd.6. An apparatus according to or claim 2 , wherein the vibration isolation unit comprises a structural spring.7. An apparatus according to or claim 2 , wherein the frequency (f) and the dynamic force (F) of the oscillator are capable of being controlled by the controller.8. An apparatus according to claim 7 , wherein the frequency (f) and the dynamic force (F) of the oscillator are capable of control according to load cell measurements representing changes in the compressive strength (U) of material being drilled.9. A method of drilling comprising operating an apparatus as defined in any of or .11. A method according to claim 10 , wherein Sis less than 5 claim 10 , preferably less than 2 claim 10 , more preferably less than 1.5 claim 10 , and most preferably less than 1.2.12. A method according to claim 10 , wherein Sis less than 5 claim 10 , preferably less than 2 claim 10 , more preferably less than 1.5 claim 10 , and most preferably less than 1.2.15. A method according to claim 12 , wherein X>f/100 claim 12 , more preferably X>f/50 claim 12 , more preferably still X>f/10.17. A method according to claim 16 , wherein Y>S[(π/4)DU]/100 claim 16 , more preferably Y>S[(π/4)DU]/50 claim 16 , more preferably still Y>S[(π/4)D]/10.1817. A method according to any one of - claims 14 , wherein one or both of X and Y are adjustable according to predicted variations in the compressive strength (U) of ...

DOWNHOLE SHOCK ASSEMBLY AND METHOD OF USING SAME

A shock assembly for use with a motion tool deployable into a wellbore by a conveyance. The motion tool includes a mandrel operatively connectable to the conveyance or the motion tool, a housing operatively connectable to the motion tool or the conveyance (the housing having an opening to slidingly receive the mandrel and including a first and a second spring portion), a first spring slidably positionable in the first spring portion and having a first spring stiffness, and a second spring slidably positionable in the second spring portion having a second spring stiffness. The second spring stiffness being less than the first spring stiffness such that the first and second springs selectively engage as the housing slidingly moves about the mandrel in response to forces applied to the system to selectively restrict movement between the mandrel and the housing whereby the motion tool is vibrated. 1. A shock assembly for use with a motion tool deployable into a wellbore penetrating a subterranean formation by a conveyance , the shock assembly comprising:a mandrel operatively connectable to one of the conveyance and the motion tool;a housing operatively connectable to another of the conveyance and the motion tool, the housing having an opening to slidingly receive the mandrel; anda first spring and a second spring slidably positionable in the housing between the mandrel and the housing, the first spring having a first spring stiffness and the second spring having a second spring stiffness, the second spring stiffness being less than the first spring stiffness such that the first and second springs selectively engage as the housing slidingly moves about the mandrel in response to forces applied to the motion tool to selectively restrict movement between the mandrel and the housing whereby the motion tool is vibrated.2. The shock assembly of claim 1 , wherein the second spring is engaged when the forces are applied to the conveyance.3. The shock assembly of claim 1 , ...

Method and apparatus for creating a pressure pulse in drilling fluid to vibrate a drill string

A pressure pulse generating method and apparatus for use with a drill string includes a top and bottom subs for attaching the apparatus within the drill string; a power section comprising a rotor/stator; a drive assembly; and a nozzle sub which includes a nozzle assembly comprising a nozzle holder and a replaceable nozzle; and a nozzle housing having pulse openings. The nozzle holder has fluid ports which periodically align with the pulse openings as the nozzle holder rotates within the nozzle housing to achieve a desired pulse amplitude, frequency and waveform.

DOWNHOLE VIBRATORY APPARATUS

The present disclosure is for a vibratory downhole rotary apparatus. The apparatus includes a cylindrical hollow body, a stator disposed within the cylindrical hollow body and a rotor disposed within the stator. The apparatus also includes a flow resistance system to vary the resistance of fluid flow through the apparatus to increase and decrease backpressure across the apparatus. 1. A vibratory downhole rotary apparatus , the apparatus comprising:a cylindrical hollow body having a first end and a second end;a stator disposed within the cylindrical hollow body;a rotor rotatably disposed within the stator; anda flow resistance system to vary the resistance of fluid flow through the apparatus to increase and decrease backpressure across the apparatus.2. The apparatus of wherein the stator is constructed of substantially metallic materials.3. The apparatus of wherein the flow resistance system includes a fluid port in the rotor to permit fluid to flow from between the stator and rotor to an internal passageway of the rotor claim 1 , the internal passageway of the rotor disposed in a second end of the rotor.4. The apparatus of wherein the rotor includes at least one lobe and the stator includes at least N+1 number of cavities claim 3 , the cavities sized to receive at least one lobe of the rotor.5. The apparatus of wherein the flow resistance system further includes a bearing assembly positioned in the second end of the apparatus claim 1 , the bearing assembly having an upper thrust bearing attached to the rotor that spins and rotates against a lower thrust bearing as the rotor rotates and orbits within the stator.6. The apparatus of wherein the upper thrust bearing and the lower thrust bearing include fluid passageways that permit fluid to flow from the internal passageway of the rotor into the second end of the apparatus and out of the apparatus.7. A vibratory downhole rotary apparatus claim 5 , the apparatus comprising:a cylindrical hollow body having a first end and ...

System and Method for New Cable Provisioning Utilizing Buried Cable

Novel tools and techniques for underground cable installation are provided. A system includes a compressor and a boring attachment. The boring attachment may be operatively coupled to the compressor and further coupled to an outer sheath of a buried cable. The boring attachment may be configured to be actuated by the compressor. In response to being actuated by the compressor, the boring attachment may be configured to displace at least some ground material, in contact with the buried cable, in which the buried cable is buried, and advance in at least one direction along a longitudinal axis of the buried cable. 1. A system comprising:a compressor;a sensor configured to detect a location of a buried cable;a boring attachment operatively coupled to the compressor and further coupled to an outer sheath of the buried cable, the boring attachment configured to be actuated by the compressor, wherein in response to being actuated by the compressor, the boring attachment is configured to:advance in at least one direction along a longitudinal axis of the buried cable; andtrack, based on input from the sensor, at least one of a travel distance along the buried cable or a location of the boring attachment relative to the buried cable.2. The system of claim 1 , wherein the boring attachment is further configured to displace at least some ground material claim 1 , in contact with the buried cable claim 1 , in which the buried cable is buried.3. The system of claim 1 , wherein the boring attachment comprises the sensor claim 1 , wherein the boring attachment is further configured to track the position of the buried cable as the boring attachment advances in the at least one direction.4. The system of claim 2 , wherein the boring attachment is steerable claim 2 , based at least in part on the location of the buried cable.5. The system of claim 1 , wherein the boring attachment further comprises a guide configured to couple to the outer sheath of the buried cable claim 1 , and ...

System and Method for New Cable Provisioning Utilizing Buried Cable

Novel tools and techniques for underground cable installation are provided. A system includes a compressor and a boring attachment. The boring attachment may be operatively coupled to the compressor and further coupled to an outer sheath of a buried cable. The boring attachment may be configured to be actuated by the compressor. In response to being actuated by the compressor, the boring attachment may be configured to displace at least some ground material, in contact with the buried cable, in which the buried cable is buried, and advance in at least one direction along a longitudinal axis of the buried cable. 1. A system comprising:a compressor; and displace at least some ground material, in contact with the buried cable, in which the buried cable is buried; and', 'advance in at least one direction along a longitudinal axis of the buried cable., 'a boring attachment operatively coupled to the compressor and further coupled to an outer sheath of a buried cable, the boring attachment configured to be actuated by the compressor, wherein in response to being actuated by the compressor, the boring attachment is configured to2. The system of further comprising a sensor configured to detect the location of the buried cable.3. The system of claim 2 , wherein the boring attachment comprises the sensor claim 2 , wherein the boring attachment is further configured to track the position of the buried cable as the boring attachment advances in the at least one direction.4. The system of claim 2 , wherein the boring attachment is steerable claim 2 , based at least in part on the location of the buried cable.5. The system of claim 1 , wherein the boring attachment further comprises a guide configured to couple to the outer sheath of the buried cable claim 1 , and configured direct the movement of the boring attachment.6. The system of claim 1 , wherein the boring attachment further comprises a sleeve configured to couple circumferentially around the buried cable claim 1 , ...

Adjustable Cutting Mill Assembly and Methods of Operation

A system and method for adjusting or controlling at least one milling operating feature of a cutting mill assembly within a wellbore includes sensing at least one milling operating parameter with a sensor that is operably associated with the cutting mill assembly that is run into the wellbore. At least one milling operating feature of the cutting mill assembly is adjusted or controlled in response to the at least one milling operating parameter that is sensed. 1. A cutting mill assembly for performing a cutting operation within a wellbore , the cutting mill assembly comprising:a milling bottom hole assembly to be disposed into the wellbore by a running string;a running string;a sensor to detect at least one milling operating parameter;a controller which is operably interconnected with the sensor to receive a signal representative of the milling operating parameter;the cutting mill assembly having at least one milling operating feature which can be adjusted; andthe controller further being configured to adjust or control the at least one milling operating feature in response to the at least one milling operating parameter.2. The cutting mill assembly of wherein the at least one milling operating feature is from the group consisting of: extension of a cutter from a bit body of the milling bit claim 1 , flow area of a nozzle in the bit body claim 1 , milling body diameter claim 1 , fluid flow to the milling bottom hole assembly through the running string and vibration imparted to the milling bottom hole assembly.3. The cutting mill assembly of wherein the at least one milling operating parameter includes torque claim 1 , weight on bit claim 1 , surface weight claim 1 , temperature claim 1 , pressure claim 1 , vibration or fluid flow received proximate the milling bit bottom hole assembly.4. The cutting mill assembly of wherein the controller is located within the milling bottom hole assembly.5. The cutting mill assembly of wherein the controller is operably ...

DUAL CIRCULATION FLUID HAMMER DRILLING SYSTEM

A dual circulation fluid hammer drilling system () has a fluid hammer () which is coupled to a drill string (). The system () utilises a first fluid () and a second fluid (). The first fluid () is delivered through the drill string () to drive or otherwise power the fluid hammer (). The second fluid () is also delivered through the drill string () but in isolation of the first fluid () so they do not mix within the drill string (). The second fluid () passes through a hammer bit () of the hammer drill () and is directed to flow out from a bit face (). Thus when the system () is in use the second fluid () will flow across the bit face (). The first fluid () also exits the drilling system () at the hammer drill (). However the first fluid () exits upstream or up-hole of the bit face (). 1. A dual circulation fluid hammer drilling system comprising:a drill string configured to separately convey a first fluid and a second fluid down a hole, the drill string having an up hole end and an opposite down hole end; anda hammer drill having a drill bit with a bit face, the hammer drill coupled to the down hole end of the drill string wherein the first fluid provides power to drive the hammer drill and the second fluid is directed to flow across the bit face when the bit face is in contact with a toe of a hole bring drilled.2. The system according to wherein the second fluid is directed to flow through the drill bit.3. The system according to or wherein the drill bit is provided with a passage which opens onto the bit face and the second fluid is directed to flow through the passage.4. The system according to any one of - wherein the first fluid is directed to flow across an outer surface of the drill bit into a hole being drilled by the drilling system.5. The system according to any one of - wherein the first fluid flows from the hammer dill into the hole as a substantially annular flow which surrounds the second fluid when the flows across the bit face.6. The system according ...

Drilling rig and methods using multiple types of drilling for installing geothermal systems

A drilling rig and methods are provided for using multiple types of drilling when installing geothermal systems. The drilling rig can perform sonic drilling such as percussive sonic drilling and a type of non-sonic drilling. Control switching valves are added to the hydraulics of the drilling rig to selectively provide sufficient flow of hydraulic fluid to motors used in the multiple types of drilling, depending on which type of drilling is currently most efficient for the underground formation being drilled. The water pump and hydraulic motor for such have been designed to handle both types of drilling on a small drilling rig frame, thereby allowing for the drilling to occur in space-constrained environments. A method of recycling water used to remove cuttings during drilling to put back downhole is also provided.

Apparatus and methods for automated slide drilling

An automated slide drilling system (ASDS) may be used with a drilling rig system to control slide drilling. The ASDS may autonomously control slide drilling without user input during the slide drilling. The ASDS may further support a transition from rotary drilling to slide drilling to rotary drilling without user input during the transitions. The ASDS may also support user input and user notifications for various steps to enable manual or semi-manual control of slide drilling by a driller or an operator.

RESONANCE-TUNED DRILL STRING COMPONENTS

A drilling system includes a drill string extendable into a wellbore penetrating a subterranean formation. The subterranean formation exhibits a resonant frequency and a drill bit is coupled to a distal end of the drill string. A vibration sub is positioned within the drill string adjacent the drill bit for generating vibration stress waves at the drill bit, and the vibration stress waves exhibit a vibration frequency that approximates the resonant frequency. 1. A drilling system , comprising:a drill string extendable into a wellbore penetrating a subterranean formation, wherein the subterranean formation exhibits a resonant frequency;a drill bit coupled to a distal end of the drill string; anda vibration sub positioned within the drill string adjacent the drill bit for generating vibration stress waves at the drill bit, wherein the vibration stress waves exhibit a vibration frequency that approximates the resonant frequency.2. The drilling system of claim 1 , wherein the vibration sub includes one or more acoustic devices that generate acoustic vibration stress waves.3. The drilling system of claim 2 , wherein the one or more acoustic devices comprise at least one of a speaker claim 2 , a piezoelectric device claim 2 , and an acoustic transducer.4. The drilling system of claim 1 , wherein the vibration sub comprises:a housing disposed about a drive shaft that rotates the drill bit;a first plate fixed to the housing and including a first uneven surface having first surface features; anda second plate rotationally fixed to the drive shaft and including a second uneven surface having second surface features, wherein, as the drive shaft rotates, the second plate correspondingly rotates relative to the first plate and engagement of the first and second surface features generate mechanical vibration stress waves in the drill bit.5. The drilling system of claim 4 , wherein the first and second surface features are selected from the group consisting of undulations claim 4 ...

WELLBORE DRILLING SYSTEMS WITH VIBRATION SUBS

A bottom-hole assembly includes a drill string extendable within a wellbore and a drill bit positioned at a distal end of the drill string. A vibration sub is positioned in the drill string axially adjacent the drill bit and includes one or more vibratory devices that impart vibration to the drill bit. 1. A bottom-hole assembly , comprising:a drill string extendable within a wellbore;a drill bit positioned at a distal end of the drill string; anda vibration sub positioned in the drill string axially adjacent the drill bit and including one or more vibratory devices that impart vibration to the drill bit.2. The bottom-hole assembly of claim 1 , wherein the one or more vibratory devices comprise one or more piezoelectric modules.3. The bottom-hole assembly of claim 2 , wherein the one or more piezoelectric modules comprise piezoceramic actuators.4. The bottom-hole assembly of claim 1 , wherein a frequency of the vibration is between 0.001 Hz and 500 Hz.5. The bottom-hole assembly of claim 1 , wherein the vibration sub is a first vibration sub claim 1 , the bottom-hole assembly further comprising:a reamer positioned in the drill string and axially offset from the drill bit; anda second vibration sub positioned in the drill string axially adjacent the reamer and including one or more additional vibratory devices that impart vibration to the reamer.6. The bottom-hole assembly of claim 5 , wherein the first vibration sub vibrates in phase with the second vibration sub.7. The bottom-hole assembly of claim 5 , wherein the first vibration sub vibrates out of phase with the second vibration sub.8. A vibration sub claim 5 , comprising:a tool body able to be coupled to a bottom-hole assembly;a power source positioned within the tool body; andone or more vibratory devices positioned within the tool body and powered by the power source to impart vibration to the bottom-hole assembly.9. The vibration sub of claim 8 , wherein the power source comprises a power generator selected ...

DRILL BITS WITH STICK-SLIP RESISTANCE

A drill bit includes a bit body and one or more cutters positioned on the bit body at select locations. At least one vibrational device is positioned on the bit body to impart vibration to the bit body and thereby mitigate stick-slip. 1. A drill bit , comprising:a bit body;one or more cutters positioned on the bit body; andat least one vibrational device positioned on the bit body to impart vibration to the bit body.2. The drill bit of claim 1 , wherein the at least one vibrational device comprises a piezoceramic actuator.3. The drill bit of claim 1 , wherein a frequency of the vibration imparted by the at least one vibrational device is between 100 Hz and 1000 Hz.4. The drill bit of claim 1 , wherein a frequency of the vibration imparted by the at least one vibrational device is ultrasonic.5. The drill bit of claim 1 , wherein the vibration imparted by the at least one vibrational device is tuned in a circumferential direction with respect to the bit body.6. The drill bit of claim 1 , further comprising at least one actuatable impact arrestor positioned on the bit body.7. The drill bit of claim 6 , wherein the at least one actuatable impact arrestor is operatively coupled to a piezoceramic actuator positioned to actuate the impact arrestor.8. The drill bit of claim 7 , wherein the at least one vibrational device comprises an additional piezoceramic actuator operatively coupled to the bit body.9. A method claim 7 , comprising:rotating a drill bit coupled to an end of a drill string and thereby drilling a wellbore through one or more subterranean formations;actuating a vibrational device positioned on the drill bit and thereby imparting vibration to the drill bit; andmitigating at least one of stick-slip of the drill bit and whirl of the drill string with the vibration imparted by the vibrational device.10. The method of claim 9 , wherein the vibrational device is positioned on a bit body of the drill bit claim 9 , and wherein actuating the vibrational device ...

Three-dimensional hydraulic oscillator

A three-dimensional hydraulic oscillator includes an upper casing, a lower casing screwed with the upper casing, an upper joint screwed with the upper casing, a lower joint screwed with the lower casing and a screw. An upper rotating shaft is mounted in the upper casing. A turbine group is mounted on the upper rotating shaft. An upper cam is fixed to the upper rotating shaft. A lower cam is movably mounted in the upper casing. The upper cam contacts with the lower cam. The screw is mounted in the upper casing and fixed to the lower cam. A lower rotating shaft is mounted in the lower casing. An eccentric block is fixed on the lower rotating shaft. A lower roulette is fixed to the lower rotating shaft. A shaft cap is disposed above the lower roulette. An upper roulette is mounted on the screw and meshed with the lower roulette.

DOWNHOLE TOOL FOR GENERATING VIBRATION IN A TUBULAR

A downhole tool and method for use, in which the tool includes a housing defining a first bore axially therethrough, and a valve shaft disposed in the first bore of the housing. The valve shaft defines a second bore extending axially therein and one or more openings extending radially from the second bore, the valve shaft being rotatable relative to the housing. The tool also includes a valve sleeve disposed in the housing and defining one or more openings extending radially therethrough. The valve shaft is rotatable relative to the valve sleeve, such that the one or more openings of the valve sleeve are periodically aligned and misaligned with the one or more openings of the valve sleeve as the valve shaft rotates. 1. A downhole tool , comprising:a housing defining a first bore axially therethrough;a valve shaft disposed in the first bore of the housing, wherein the valve shaft defines a second bore extending axially therein and one or more openings extending radially from the second bore, the valve shaft being rotatable relative to the housing; anda valve sleeve disposed in the housing and defining one or more openings extending radially therethrough, the valve shaft being rotatable relative to the valve sleeve, such that the one or more openings of the valve sleeve are periodically aligned and misaligned with the one or more openings of the valve sleeve as the valve shaft rotates.2. The tool of claim 1 , wherein the valve shaft defines an open axial end in communication with the first and second bores claim 1 , wherein the valve shaft is configured such that fluid flows from the second bore into the first bore via the open axial end.3. The tool of claim 2 , further comprising a fluid restrictor that is removably positioned in the open axial end.4. The tool of claim 1 , wherein the housing prevents fluid from exiting radially outward from within the first bore.5. The tool of claim 1 , further comprising a bearing positioned between and engaging the valve shaft and ...

DOWNHOLE TOOL FOR INCREASING A WELLBORE DIAMETER

A downhole tool for increasing a diameter of a wellbore disposed within a subterranean formation. The downhole tool includes an underreamer having a plurality of cutter blocks moveably coupled thereto that move radially-outward from a refracted state to an expanded state. The cutter blocks cut the subterranean formation to increase the diameter of the wellbore from a first diameter to a second diameter when in the expanded state. A formation weakening tool may be coupled to the underreamer. The formation weakening tool weakens a portion of the subterranean formation positioned radially-outward therefrom. 1. A downhole tool for increasing a diameter of a wellbore disposed within a subterranean formation , comprising:an underreamer having a plurality of cutter blocks moveably coupled thereto that move radially-outward from a retracted state to an expanded state, the cutter blocks being arranged and designed to cut the subterranean formation to increase the diameter of the wellbore from a first diameter to a second diameter when in the expanded state; anda formation weakening tool coupled to the underreamer, the formation weakening tool configured to weaken a portion of the subterranean formation positioned radially-outward therefrom.2. The downhole tool of claim 1 , wherein the formation weakening tool is positioned ahead of the underreamer such that the formation weakening tool weakens the portion of the subterranean formation before the underreamer cuts the portion of the subterranean formation to increase the diameter of the wellbore from the first diameter to the second diameter.3. The downhole tool of claim 1 , wherein the formation weakening tool transmits vibrational energy radially-outward to weaken the portion of the subterranean formation.4. The downhole tool of claim 1 , wherein the formation weakening tool transmits electro pulses radially-outward to weaken the portion of the subterranean formation.5. The downhole tool of claim 1 , wherein the formation ...

Hydraulic Percussion Apparatus and Method of Use

A hydraulic percussive apparatus is disclosed for generating vibrating forces to a pipe string. The apparatus is attached to the pipe string a central bore through which fluid may be introduced into the apparatus. The apparatus has a tubular housing, an anvil surface with an irregularly profiled surface, and a rotor with an irregularly profiled hammer surface that is urged to move axially toward and away from the anvil surface. The rotor has a longitudinally extending fluid bore and a tangentially oriented fluid port in communication with the longitudinal fluid bore of the rotor. Fluid entering the rotor's fluid bore and exiting the rotor's tangentially oriented fluid port rotates the rotor, and thus the irregularly profiled hammer surface on the irregularly profiled anvil surface, moving the hammer surface toward and away from the anvil producing intermittent impact forces. 1. An apparatus for imparting repeated percussions or impacts to a wellbore pipestring comprising:(a) a tubular housing having a longitudinally extending central bore whereby a fluid may be introduced;(b) a tubular compression sleeve positioned in said tubular housing in a manner allowing relative axial movement of said compression sleeve while disallowing relative rotational movement;(c) a tubular rotor positioned within said tubular housing, said rotor having upper end, a lower end having a hammer surface, a longitudinally extending fluid bore in communication with said central bore of said housing, said fluid bore having a flow restriction orifice at its lower end, a tangentially positioned fluid port in communication with said longitudinal fluid bore of said rotor in fluid communication with the annulus between said housing and said rotor, said fluid port having an axis that it extends transverse to but does not intersect the longitudinal axis of said tubular rotor, and whereby said introduced fluid from said housing entering said longitudinally extending fluid bore of said rotor and exiting ...

RESONANCE ENHANCED ROTARY DRILLING ACTUATOR

Provided is a device for converting rotary motion into oscillatory axial motion, which device comprises: 2. (canceled)3. A device according to claim 1 , wherein the one or more bearings is a rolling-element bearing.4. A device according to claim 1 , wherein the raised and or lowered portions are in the form of indentations and/or protuberances set into the rotation element and/or into the base element claim 1 , wherein the indentations and/or protuberances are in the form of ridges and troughs running radially out from the axis of rotation of the rotation element and/or of the base element.5. (canceled)6. A device according to claim 1 , wherein the raised and or lowered portions are in the form of smooth changes in the thickness of the rotation element and/or of the base element.7. A device according to claim 1 , wherein the raised and or lowered portions are in the form of a track or groove set into the rotation element and/or into the base element claim 1 , wherein the track or groove is configured to constrain the one or more bearings claim 1 , wherein the bearing is a ball bearing claim 1 , and the track or groove has a tangential cross-section in the shape of a circular arc.8. (canceled)9. A device according to claim 1 , further comprising a spring to urge the rotation element and the base element together.10. An actuator for use in a resonance enhanced drilling module comprising a device as defined in .11. An actuator for use in a resonance enhanced drilling module claim 1 , comprising a first device and a second device according to :said first device having a first number of bearings, andsaid second device having a second number of bearings,wherein the first number and the second number are not the same.12. An apparatus for use in resonance enhanced rotary drilling claim 1 , which apparatus comprises a device of .14. (canceled)15. An apparatus according to claim 13 , further comprising a vibration transmission unit between device or actuator (iii) and sensor ...

DOWNHOLE PULSE GENERATING DEVICE

A pulse generator comprises a stator coupled to a housing and a rotor that is rotatably disposed within the housing. An annulus is formed between the rotor and the stator. An inner bore is formed through the rotor. One or more outer flow ports provide fluid communication between the annulus and the inner bore. A retrievable valve assembly is rotationally coupled to the rotor and at least partially disposed within the inner bore. The retrievable valve assembly includes a rotary valve member having one or more primary flow ports. A fluid flow path is periodically formed by the one or more outer flow ports, the annulus, and the one or more primary flow ports as the rotor rotates. 1. A pulse generator comprising:a stator coupled to a housing;a rotor rotatably disposed within the housing;an annulus formed between the rotor and the stator;an inner bore formed through the rotor;one or more outer flow ports that provide fluid communication between the annulus and the inner bore; anda retrievable valve assembly rotationally coupled to the rotor and at least partially disposed within the inner bore, wherein the retrievable valve assembly includes a rotary valve member having one or more primary flow ports;wherein a fluid flow path is periodically formed by the one or more outer flow ports, the annulus, and the one or more primary flow ports as the rotor rotates.2. The pulse generator of claim 1 , wherein the rotary valve member is disposed within the inner bore and the primary flow ports are longitudinally aligned with the outer flow ports.3. The pulse generator of claim 1 , wherein the retrievable valve assembly further comprises a latching member coupled to the housing and a flexible shaft that couples the latching member to the rotary valve member.4. The pulse generator of claim 1 , wherein the retrievable valve assembly further comprises a linear adjustment mechanism for moving the rotary valve member from a first position to a second position.5. The pulse generator of ...

DRILL BIT HOUSING VIBRATOR AND METHOD

A vibration system for drill bit housing and method is disclosed, which may be utilized to assist in lowering a drill string into a wellbore through which drilling fluid is pumped. In one embodiment, a drill bit housing contains a symmetrical rotatable member positioned to rotate in response to drilling fluid pumped through the housing, whereby a mechanical interconnection connected to the rotatable member produces vibrations within the drill bit housing for advancing bottom hole assemblies. 1. A vibration system for use with a drill bit attached to tubular string in a well bore through which drilling fluid is pumped , comprising:a drill bit housing;drill bit cutters secured to said drill bit housing;a symmetrical rotatable member positioned within said drill bit housing to rotate in response to drilling fluid flow through said drill bit housing; anda mechanical interconnection to said rotatable member whereby said rotatable member and said mechanical interconnection operate to produce vibrations within said drill bit housing.2. The vibration system of claim 1 , wherein said mechanical interconnection comprises a pair of engagement surfaces which rotate with respect to each other.3. The vibration system of claim 2 , further comprising a spring assembly to said pair of engagement surfaces together.4. The vibration system of claim 2 , further comprising a reciprocating member.5. The vibration system of claim 4 , wherein a first of said pair of engagement surfaces is mounted to said rotatable member and a second of said pair of engagement surfaces is mounted to said reciprocating member.6. The vibration system of claim 2 , wherein said pair of engagement surfaces comprises one or more recesses and protrusions.7. A vibration system for use with a drill bit attached to tubular string in a well bore through which drilling fluid is pumped claim 2 , comprising:a drill bit housing;drill bit cutters secured to said drill bit housing;a reciprocating member mounted in said ...

Drilling Oscillation Systems and Shock Tools for Same

A method for increasing an amplitude of reciprocal axial extensions and contractions of a shock tool configured to induce axial oscillations in a drillstring during drilling operations includes (a) selecting the shock tool. The shock tool has a central axis and an axial length. The shock tool includes an outer housing, a mandrel telescopically disposed within the outer housing, and a first annular piston fixably coupled to the mandrel. The shock tool has a first amplitude of reciprocal axial extension and contraction at a pressure differential between a first fluid pressure in the outer housing and a second fluid pressure outside the outer housing. In addition, the method includes (b) fixably coupling a second annular piston to the mandrel of the shock tool and increasing the axial length of the shock tool after (a). The second annular piston is axially spaced from the first annular piston. The shock tool has a second amplitude of reciprocal axial extension and contraction at the pressure differential between the first fluid pressure in the outer housing and the second fluid pressure outside the outer housing after (b). The second amplitude of reciprocal axial extension and contraction is greater than the first amplitude of reciprocal axial extension and contraction. 1. A method for increasing an amplitude of reciprocal axial extensions and contractions of a shock tool configured to induce axial oscillations in a drillstring during drilling operations , the method comprising:(a) selecting the shock tool, wherein the shock tool has a central axis and an axial length, wherein the shock tool includes an outer housing, a mandrel telescopically disposed within the outer housing, and a first annular piston fixably coupled to the mandrel, and wherein the shock tool has a first amplitude of reciprocal axial extension and contraction at a pressure differential between a first fluid pressure in the outer housing and a second fluid pressure outside the outer housing;(b) ...

Drill String Oscillation Methods

A method includes oscillating, with a first acceleration profile, at least a portion of a drill string using a top drive at least indirectly coupled to the drill string and includes oscillating, with a second acceleration profile different from the first acceleration profile, at least a portion of the drill string using the top drive. The method also includes oscillating, with a third acceleration profile, at least a portion of the drill string using the top drive, wherein the third acceleration profile is optimized based on feedback associated with the oscillation with the first acceleration profile and feedback associated with the oscillation with the second acceleration profile. 1. A method , comprising:oscillating, with a first acceleration profile, at least a portion of a drill string using a top drive at least indirectly coupled to the drill string;oscillating, with a second acceleration profile different from the first acceleration profile, at least a portion of the drill string using the top drive; andoscillating, with a third acceleration profile, at least a portion of the drill string using the top drive, wherein the third acceleration profile is optimized based on feedback associated with the oscillation with the first acceleration profile and feedback associated with the oscillation with the second acceleration profile.2. The method of further comprising claim 1 , prior to oscillating with the second acceleration profile claim 1 , selecting the second acceleration profile based on input received from a human operator.3. The method of wherein selecting the second acceleration profile comprises selecting the second acceleration profile from a plurality of preset acceleration profiles stored in a controller associated with the top drive.4. The method of wherein selecting the second acceleration profile comprises selecting a modification of the first acceleration profile based on the input received from the human operator claim 2 , wherein the modification ...

VIBRATOR ARRANGEMENT COMPRISING A CABLE SUSPENSION PENETRATING INTO THE GROUND

A device is provided for vibration compression or for producing cavities and/or material columns in the ground. The device comprises a vibrator with a pipe which has an upper end and a lower end and also two cable suspensions which are arranged on the pipe at a distance from the upper end. A cable is secured to each cable holder. A support device for the vibrator arrangement comprises a guide device on which the cables are guided in the longitudinal direction of the pipe between the cable holders and the upper end or above the upper end. 118-. (canceled)19. A device , comprising:a vibrator arrangement with a pipe which has an upper end and a lower end and which has two cable holders which are arranged on the pipe spaced from the upper end thereof, one cable each being fastened on each cable holder;a support device for the vibrator arrangement, wherein the support device includes a guide device on which the cables are guided in a longitudinal direction of the pipe between the cable holders and the upper end or above the upper end.20. The device as claimed in claim 19 , wherein the guide device has an upper end and is designed so that the upper end of the pipe is guidable in the guide device at least up to the upper end of the guide device.21. The device as claimed in claim 19 , wherein the guide device is designed so that the upper end of the pipe can be guided beyond the upper end of the guide device.22. The device as claimed in claim 19 , wherein the guide device includes two deflection devices which are arranged spaced from one another so that the pipe is guidable between the rollers claim 19 , and wherein claim 19 , in each case claim 19 , one cable is guided on a deflection device.23. The device as claimed in claim 19 , wherein the guide device includes two cable winches which are arranged spaced apart so that the pipe is guidable between the cable winches claim 19 , and wherein claim 19 , in each case claim 19 , one cable is guided held on a cable winch.24. The ...

DOWNHOLE VIBRATION ASSEMBLY AND METHOD OF USING SAME

In at least one aspect, the disclosure relates to a vibration assembly for a downhole tool positionable in a subterranean formation. The vibration assembly includes a vibration race positioned in the downhole tool, the vibration race having a non-planar engagement surface. The vibration assembly also includes an additional race positioned in the downhole tool a distance from the vibration race, the additional race having another engagement surface facing the non-planar engagement surface of the vibration race. The vibration assembly also includes a cage positioned between the vibration race and the additional race and rollers positionable in the cage, the rollers rollably engageable with the non-planar engagement surface and the another engagement surface to vary the distance between the vibration race and the additional race whereby axial movement is provided in the downhole tool. 1. A vibration assembly for a downhole tool positionable in a subterranean formation , the vibration assembly comprising:a vibration race positioned in the downhole tool, the vibration race having a non-planar engagement surface;an additional race positioned in the downhole tool a distance from the vibration race, the additional race having another engagement surface facing the non-planar engagement surface of the vibration race; androllers rollably engageable with the non-planar engagement surface and the another engagement surface to vary the distance between the vibration race and the additional race whereby axial movement is provided in the downhole tool.2. The vibration assembly of claim 1 , wherein the additional race is a bearing race and wherein the another engagement surface is a planar engagement surface.3. The vibration assembly of claim 1 , wherein the additional race is another vibration race having another non-planar surface.4. The vibration assembly of claim 3 , wherein the additional race is one of identical to and different from the vibration race5. (canceled)6. (canceled ...

BASEMENT ROCK HYBRID DRILLING

A method for monitoring and controlling a downhole pressure of a well during formation of a borehole of a well is provided. The method can include monitoring a downhole pressure of a well during formation of a borehole of the well using a millimeter wave drilling apparatus including a waveguide configured for insertion into the borehole. The monitoring can include determining the downhole pressure. The downhole pressure can include an amount of pressure present at a bottom of the well. The method can also include determining a lithostatic pressure of rock surrounding the well at the bottom of the well. The method can further include controlling the downhole pressure relative to the lithostatic pressure of the rock surrounding the well at the bottom of the well. Related systems performing the methods are also provided.

BASEMENT ROCK HYBRID DRILLING

A system for monitoring borehole parameters and switching to millimeter wave drilling based on the borehole parameters is provided. The system can include a mechanical drilling apparatus for forming a first portion of a borehole of a well. The first portion of the borehole can be formed based on a permeability of the first portion of the borehole and a temperature within the first portion of the borehole. The system can also include a millimeter wave drilling apparatus configured to inject millimeter wave radiation energy into a second portion of the borehole of the well via a waveguide. The second portion of the borehole can be formed via the millimeter wave drilling apparatus in response to determining the permeability of the first portion of the borehole is below a permeability threshold value and the temperature within the first portion of the borehole exceeds a temperature threshold value.

BASEMENT ROCK HYBRID DRILLING

A system for monitoring and controlling downhole pressure of a well borehole relative to a lithostatic pressure of rock surrounding the borehole is provided. The system can include a millimeter wave drilling apparatus including a gyrotron configured to inject millimeter wave radiation energy into a borehole of a well via a waveguide configured for insertion into the borehole. The borehole can be formed via the millimeter wave drilling apparatus and having a downhole pressure monitored at a bottom of the well. The system can also include a compressor fluidically coupled to the borehole and configured to control the downhole pressure via a gas supplied into and/or received from the borehole. The compressor can be configured to control the downhole pressure relative to a lithostatic pressure determined for rock surrounding the well at the bottom of the well.

SYSTEM AND METHOD FOR DUAL TELEMETRY NOISE REDUCTION

A system and method for reducing noise from a signal during drilling of a well. A system for generating mechanical vibrations may generate acoustic signals for communicating information, and may induce pressure signals in a drilling mud communicating information. A noise reduction system may receive both the acoustic and pressure signals and phase shift one set of signals to adjust for a time difference between the two. The system may also sample the signals and may overlay the signals or the sampled signals and cancel the noise from the received signals. 1. A system with dual telemetry noise reduction for drilling , the system comprising:a mechanical vibration generation system adapted to generate a plurality of acoustic signals comprising data associated with drilling of a well borehole, wherein, responsive to the plurality of acoustic signals; anda noise reduction system adapted to receive the plurality of acoustic signals and a plurality of pressure signals induced in drilling mud located in the borehole, with the plurality of pressure signals corresponding to the plurality of acoustic signals and offset therefrom by a first time period, compare the plurality of acoustic signals and the plurality of pressure signals, determine the first time period, and cancel noise from the plurality of acoustic signals or the plurality of pressure signals.2. The system according to wherein the noise reduction system is further adapted to use the first time period to shift the plurality of pressure signals and then compare the shifted plurality of pressure signals to the plurality of acoustic signals.3. The system according to wherein the noise reduction system is further adapted to use the first time period to shift the plurality of acoustic signals and then compare the shifted plurality of acoustic signals to the plurality of pressure signals.4. The system according to wherein the mechanical vibration generation system is further adapted to generate a constant frequency ...

ESTIMATING DOWNHOLE RPM OSCILLATIONS

Methods and apparatus for including obtaining raw surface data for present values of torque (T) generated by a top drive operably coupled with a drillstring, obtaining raw surface data for present values of rotational speed (ω) of the top drive corresponding to the T, obtaining inertia (J) of the top drive, and estimating torque Tof the drillstring based on the obtained Tdata, the obtained data, and the obtained Jdata. The estimated drillstring torque Tmay be utilized to determine a surface torque oscillation performance index (STOPI). 1. A method comprising:{'sub': 'TD', 'obtaining raw surface data for present values of torque (T) generated by a top drive operably coupled with a drillstring;'}{'sub': 'TD', 'obtaining raw surface data for present values of rotational speed (ω) of the top drive corresponding to the T;'}{'sub': 'TD', 'obtaining inertia (J) of the top drive; and'}{'sub': ST', 'TD', 'TD, 'estimating torque Tof the drillstring based on the obtained Tdata, the obtained ω data, and the obtained Jdata.'}2. The method of wherein the Tdata is obtained from a sensor associated with the top drive.3. The method of wherein the Tdata is obtained from a variable-frequency drive related to the top drive.4. The method of wherein the Tdata is obtained from a torque sub disposed between the drillstring and the top drive.5. The method of further comprising:{'sub': TD', 'TD', 'TD−f, 'filtering the obtained Tdata to obtain filtered T(T) data; and'}{'sub': 'f', 'filtering the obtained ω data to obtain filtered ω (ω) data;'}{'sub': ST', 'TD−f', 'f', 'TD, 'wherein estimating the Tis based on the filtered Tdata, the filtered ωdata, and the obtained Jdata.'}6. The method of wherein filtering the obtained Tdata and the obtained ω data is:low-pass filtering with predetermined, low-pass frequencies if a formation being drilled via operation of the top drive has a substantially constant composition; elseband-pass filtering with predetermined, band-pass frequencies.7. The method of ...

FRICTION REDUCTION ASSEMBLY

A friction reduction tool and assembly are selectively activatable to produce fluid pressure pulses in downhole operations. The assembly includes a variable choke assembly having a rotary component and a stationary component, each with passages that enter into and out of alignment when the rotary component rotates with respect to the stationary component when driven by a rotor. The rotary component, stationary component, and rotor each have a central bore defining a central passage permitting fluid flow from above the assembly to below the assembly. 1providing a first segment of the drilling string having drill pipe connected thereto, the first segment comprising a bottom hole assembly;at a first determined interval of drill pipe connected to the first segment, connecting a first friction reduction tool and a first activation tool, the first activation tool being in operable communication with the first friction reduction tool for activating the first friction reduction tool, the first friction reduction tool and the first activation tool providing a first friction reduction segment;connecting further components of the drilling string above the first friction reduction segment;drilling a portion of the substantially lateral section of the wellbore using the drilling string while the first friction reduction tool is not activated;at a further determined interval of the drilling string above the first friction reduction segment, connecting a further friction reduction tool and a further activation tool to the drilling string to provide a further friction reduction segment, and connecting further components of the drilling string above the further friction reduction segment;drilling a further portion of the substantially lateral section of the wellbore using the drilling string while the first friction reduction tool and the second friction reduction tool are not activated;activating the first friction reduction tool using the first activation tool while at least the ...

LINEAR AND VIBRATIONAL IMPACT GENERATING COMBINATION TOOL WITH ADJUSTABLE ECCENTRIC DRIVE

Disclosed combination impact tool generates optimized linear hammering and vibrational impacts. Flow of pressurized fluid through an upper section of the tool generates linear hammering impacts, and flow of pressurized fluid through a lower section of the tool generates vibrational impacts. Flow of pressurized fluid through the lower section induces an eccentric arm to rotate and cause vibrational impacts. While frequency of hammering impacts can be controlled by varying pressure of the fluid flowing through the upper section, the frequency and amplitude of vibrational impacts can be controlled by varying weight of the eccentric arm and by varying pressure of the fluid flowing through lower section. Disclosed tool is particularly useful in drilling in shale and in fishing operations in a well-bore. 1. A method of directional drilling through shale with coil tubing , comprising:attaching a combination impact tool, said combination impact tool attached to a drilling tool, to one end of a length of coil tubing which is wound around a drum to form a drilling combination; flow of pressurized fluid through an upper section of the combination impact tool causes a hammer bit to generate linear hammering impacts, and wherein frequency of said linear hammering impacts is controlled by varying pressure of the pressurized fluid flowing through the upper section, and', 'flow of pressurized fluid through a lower section of said tool induces an eccentric arm included in the lower section to rotate and cause vibrational impacts, wherein the frequency and amplitude of said vibrational impacts can be controlled by varying weight of the eccentric arm and by varying pressure of the pressurized fluid flowing through the lower section., 'drilling a non-vertical well-bore in shale by providing linear and vibrational impacts to the drilling equipment through the tool, wherein both the linear hammering impacts and vibrational impacts are generated by pressurized fluid flowing through the ...

DIRECT WRAP MEASUREMENT DURING CONNECTION FOR OPTIMAL SLIDE DRILLING

A system or apparatus including: a controller configured to (i) deactivate and activate drilling fluid pump(s), (ii) provide operational control signals to connect tubular(s) to the tubular string, (iii) provide operational control signals to oscillate the connected tubular(s) and tubular string while the pump(s) are deactivated and activated, (iv) receive data, (v) determine a time at which motion is detected downhole, (vi) determine a number of oscillation revolutions of the tubular string required to affect toolface orientation based on the received toolface orientation data, and (vii) provide operational control signals to set a number of oscillation revolutions of the tubular string to less than the determined number; and a drive system configured to: (i) receive the operational control signals, and (ii) oscillate the connected tubular(s) and tubular string based on the set number of oscillation revolutions while maintaining a desired toolface orientation while slide drilling, and methods of providing and using the same for slide drilling. 1. A system , comprising: (i) deactivate and activate one or more pumps that deliver drilling fluid through a tubular string,', '(ii) provide operational control signals to connect one or more tubulars to the tubular string,', '(iii) provide operational control signals to oscillate the connected one or more tubulars and tubular string while the one or more pumps are deactivated and activated,', '(iv) receive data from a telemetry system,', '(v) determine a number of oscillation revolutions of the tubular string required to affect toolface orientation based on the received telemetry data, and', '(vi) provide operational control signals to set a number of oscillation revolutions of the tubular string to less than the determined number of oscillation revolutions; and, 'a controller configured to (i) receive the operational control signals from the controller, and', '(ii) oscillate the connected one or more tubulars and tubular ...

Down-Hole Vibrational Oscillator

The invention discloses a set of valves that impart hydraulic pressure pulses at specific frequencies that provide oscillatory movement of a shuttle valve within a of a downhole tool operations. These vibrations can lead to pulses for vertical seismic profiling of formations drilled, to check the location of the bit, or to detect the presence of abnormal pore pressure ahead of the bit. The pressure pulses can also be used to enhance drilling and production of wells. 1. A vibrational oscillator comprising; a shuttle valve assembly disposed along a length of a and within a casing wherein said shuttle valve assembly comprises at least a plunger , a receiving assembly , a cavity , and a valve , within said shuttle valve assembly within which fluid can flow into and out of said shuttle valve assembly and a conduit with an inlet port and an outlet port through which fluid can flow into an upstream section of said oscillator toward and out of a downstream section of said oscillator with at least one fluid passage configured to selectively couple in fluid communication with said inlet port and said outlet port through which fluid passes;such that said plunger is capable of receiving fluid and fits into said receiving assembly and said shuttle valve assembly is sealed so as to always allow at least some volume of said fluid to enter or escape said cavity;and said oscillator includes said plunger that can be at least partially positioned within said receiving assembly to at least partially interrupt fluid flow through said conduit which is in contact with and allows for movement of a fully assembled oscillator component of said oscillator and provides compressive forces that compress at least one spring or set of springs from said receiving assembly and eventually releases said compressive forces when said plunger is removed from said receiving assembly thereby providing for expansion of said springs so that oscillations within said springs located along and/or within said ...

VIBRATION TOOL

Various implementations described herein are directed to a vibration tool, e.g., for use in drilling or other downhole operations. In one implementation, the vibration tool may include a housing having a bore extending therethrough. The vibration tool may also include a piston subassembly positioned inside the bore, where the piston subassembly is configured to oscillate when fluid flow inside the piston subassembly exceeds a predetermined flow rate. The vibration tool may further include a valve mechanism positioned around the piston subassembly, where the valve mechanism is configured to restrict fluid to flow inside the piston subassembly when the valve mechanism is in a closed state and configured to allow the fluid to flow from the piston subassembly to the bore when the valve mechanism is in an open state. 1. A vibration tool , comprising:a housing having a bore extending therethrough;a piston subassembly positioned inside the bore, the piston subassembly configured to oscillate when fluid flow inside the piston subassembly exceeds a predetermined flow rate; anda valve mechanism positioned at least partially around the piston subassembly, wherein the valve mechanism is configured to restrict fluid to flow inside the piston subassembly when the valve mechanism is in a closed state and configured to allow the fluid to flow from the piston subassembly to the bore when the valve mechanism is in an open state.2. The vibration tool of claim 1 , further comprising an upper spring disposed outside of the piston subassembly and configured to bias the piston subassembly in an uphole direction and into a start position.3. The vibration tool of claim 2 , wherein claim 2 , when the valve mechanism is in the closed state claim 2 , the piston subassembly is configured to move in a downhole direction away from the start position in response to fluid pressure.4. The vibration tool of claim 1 , wherein the valve mechanism is configured to be in the closed state when the valve ...

SHOCK WAVES FOR PIPE CLEANING

A method for cleaning pipes using shock wave generating devices (i) within an interior of a pipe and focusing shock waves therein to remove accumulated material and (ii) from the exterior of a pipe by sending shock waves into the pipe from the exterior to remove accumulated material therein. 1. A method for cleaning an interior of a pipe comprising moving a shock wave generating device within the interior of the pipe and focusing shock waves from the shock wave generating device to at least one of a deposit , occlusion and ice so that focused shock waves clean the interior of the pipe.2. The method of claim 1 , wherein the shock wave generating device is at least one module of a modular pipe cleaning system.3. The method of claim 2 , further comprising focusing shock waves in different directions relative to the pipe.4. The method of claim 3 , further comprising focusing shock waves from a first shock wave generating device module of the modular piper cleaning system in a first direction and focusing shock waves from a second shock wave generating device module of the modular piper cleaning system in a second direction.5. The method of claim 4 , wherein the pipe includes uninterrupted flow of liquid within the pipe during the cleaning with focused shock waves.6. The method of claim 4 , further comprising interrupting the flow of flow within the pipe prior to the cleaning with focused shock waves.7. The method of claim 1 , wherein the pipe includes uninterrupted flow of liquid within the pipe during the cleaning with focused shock waves.8. The method of claim 1 , further comprising interrupting the flow of flow within the pipe prior to the cleaning with focused shock waves.9. The method of claim 1 , further comprising focusing shock waves with a reflector of the shock wave generating device.10. The method of claim 1 , further comprising focusing shock waves of the first shock wave generating device module with a first reflector and focusing shock waves of the second ...

DOWNHOLE SINUSOIDAL VIBRATIONAL APPARATUS

A device in place as, or suitable for use as, a vibrational tool of or in a downhole assembly, the device having a first magnetic assembly which is to be, or can be, rotated relative to a second magnetic assembly and which, when so rotated, causes the second magnetic assembly to oscillate and/or reciprocate at least substantially in an axial manner; wherein the oscillating and/or reciprocating magnetic assembly, at least substantially, at either one end, or both ends, is attached to and constrained in its oscillations and/or reciprocation by a compliant member thereby allowing the output force to be distributed to the outer body of the vibrational tool and/or any attached uphole and/or downhole tooling, from the compression and extension of the compliant member in a substantially sinusoidal manner. 120-. (canceled)21. A device in place as , or suitable for use as , a vibrational tool of or in a downhole assembly , the device having a first magnetic assembly which is to be , or can be , rotated relative to a second magnetic assembly and which , when so rotated , causes the second magnetic assembly to oscillate and/or reciprocate at least substantially in an axial manner; whereinthe oscillating and/or reciprocating magnetic assembly, at least substantially, at either one end, or both ends, is attached to and constrained in its oscillations and/or reciprocation by a compliant member thereby allowing the output force to be distributed to the outer body of the vibrational tool and/or any attached uphole and/or downhole tooling, from the compression and extension of the compliant member in a substantially sinusoidal manner.22. A device of wherein the second magnetic assembly is constrained to be synchronous in rotation with the outer body of the vibrational tool.23. A device of wherein the suitable power source is hydraulic mud flow claim 21 , electrical power or pneumatic energy to an input device.24. A device as in wherein the frequency of oscillation and/or ...

DOWNHOLE PULSATION SYSTEM AND METHOD

The present technology is a downhole pulsation system for reducing friction on a drill string by generating pressure pulsations. The system includes a valve housing attachable to the drill string, and includes a housing bore for passage of fluid. A lobed insert is fittable inside the valve housing, and includes an insert bore for passage of fluid, and a lobe extending therein. A mandrel cap includes a cap bore therethrough, and at least one port in communication with the cap bore. The mandrel cap has a portion rotatably receivable in the insert bore so that the port is alignable with the lobe. A drive linkage connects the mandrel cap to a rotor of a rotor/stator drive. Fluid flow is intermittently allowed to pass from the insert bore through the port upon rotation of the mandrel cap by the rotor. Pulse frequency is controllable by changing the lobe insert or sleeve. 1. A downhole pulsation system for utilization with a drill string , said system comprising:a valve sub housing attachable to the drill string, the valve sub housing including a sub bore axially extending along a longitudinal axis therethrough and configured to allow fluid to pass therethrough;a lobed insert fittable to said valve sub housing and locatable inside said sub bore, said lobed insert including an insert bore axially extending along a longitudinal axis therethrough and configured to allow fluid to pass therethrough, and at least one lobe feature extending into said insert bore;a mandrel cap including a cap bore axially extending along a longitudinal axis therethrough and configured to allow fluid to pass therethrough, and at least one port defined through said mandrel cap in communication with said cap bore, said mandrel cap having a portion thereof rotatably receivable in said insert bore of said lobed insert so that said port is alignable with said lobe feature; andat least one drive linkage operably connecting said mandrel cap to a rotor of a rotor and stator assembly;wherein said lobed ...

DOWNHOLE PULSATION SYSTEM AND METHOD

A valve system utilizable with a downhole tool or pulsation assembly for controlling the assembly to reduce friction on a drill string by generating pressure pulsations. The system can include a mandrel cap, and a valve. The valve can include a first end section, a valve bore defined along a longitudinal axis therethrough, one or more ports defined laterally through a sidewall of the valve and in communication with the valve bore, and a second end section defining one or more cavity sections in communication with the valve bore. At least a portion of the valve can be receivable in the cap bore, and the valve bore can be configured to receive fluid from the sub bore or the drill string. The cavity sections can be configured between an open position allowing fluid to pass therethrough and a closed position preventing fluid to pass therethrough. 1. A valve system comprising:a mandrel cap at least partially receivable in a sub bore of a valve sub housing that is operably associated with a drill string and configured to receive a fluid from the drill string, said mandrel cap including a cap bore extending along a longitudinal axis therethrough; anda valve including a first end section, a valve bore defined along a longitudinal axis therethrough, one or more ports defined laterally through a sidewall of said valve and in communication with said valve bore, and a second end section defining one or more cavity sections in communication with said valve bore, wherein at least a portion of said valve being receivable in said cap bore, and said valve bore being configured to receive fluid from said sub bore or the drill string;wherein said cavity sections being configured between an open position allowing fluid to pass therethrough and a closed position preventing fluid to pass therethrough.2. The valve system of claim 1 , wherein said second end section includes a ring wall separating said cavity sections into an outer cavity and a central bore interiorly concentric with said ...

Turbine Assembly for use in a Downhole Pulsing Apparatus

A downhole pulsing apparatus having a tubular housing, a first valve assembly positioned in the housing, first and second turbine stages each comprising a stator and a rotor positioned in the housing below the first valve assembly and a second valve assembly positioned in the housing. There is a tubular mandrel connected for rotation of the rotors of the turbine stages and to a second valve assembly. The first valve assembly includes a valve element which is movable between a first position wherein pressurized fluid flow entering the housing is directed to the first turbine assembly, and a second position wherein the fluid flow is directed primarily axially through the apparatus so as to partially bypass the first turbine stage. 1. A downhole pulsing apparatus comprising:an elongate tubular housing having a first upper end and a second lower end; a valve element reciprocally mounted in said housing, said valve element comprising an elongate stem having a first end forming a head portion, a second end, and a longitudinally extending bore, a radial bleed port formed in said body proximal said heat portion, a first radial aperture formed in said stem proximal said second end;', 'a first compression spring disposed in said housing for biasing said valve element to a first position;', 'a first chamber in surrounding relationship to said stem, said bleed port providing open communication between said chamber and said bore in said stem;, 'a first valve assembly positioned in said housing proximal said first end, said first valve assembly comprising a first stator assembly positioned in said housing below said first valve assembly, said first stator assembly comprising a first stator body having a through bore forming a first stator cavity and a plurality of radially outwardly extending angled vanes attached to said first stator body, a first stator annular flow path being formed between said first stator body and said housing;', 'a first rotor assembly positioned in said ...

SYSTEM AND METHOD FOR DUAL TELEMETRY ACOUSTIC NOISE REDUCTION

A system for active noise blocking of top drive acoustical waves includes a first accelerometer for detecting a first acoustical wave generated by the top drive of a drilling rig. A second accelerometer detects a second acoustical wave after the first acoustical wave has interacted with an anti-wave. An active noise blocking generator generates the anti-wave responsive to the detected first acoustical wave and the detected second acoustical wave and applies the anti-wave to the first acoustical wave. The anti-wave is generated to drive the second acoustical wave to zero responsive to application of the anti-wave to the first acoustical wave. 1. A system for active noise blocking of top drive acoustical waves , comprising:a first accelerometer for detecting a first acoustical wave generated by the top drive of a drilling rig;a second accelerometer for detecting a second acoustical wave after the first acoustical wave has interacted with an anti-wave;an active noise blocking generator for generating the anti-wave responsive to the detected first acoustical wave and the detected second acoustical wave and applying the anti-wave to the first acoustical wave, wherein the anti-wave is generated to drive the second acoustical wave to zero responsive to application of the anti-wave to the first acoustical wave.2. The system of claim 1 , wherein the active noise blocking generator further comprises:an anti-wave generator for generating the anti-wave responsive to an error signal, the error signal representing an amplitude and phase of the anti-wave necessary to interact with the first acoustical wave and drive the second acoustical wave to zero; anderror signal generation circuitry for generating the error signal responsive to differences between the first acoustical wave and the second acoustical wave.3. The system of claim 2 , wherein the anti-wave generator further comprises:a drive circuit for generating a drive signal responsive to the error signal; anda piezoelectric ...

ON DEMAND FLOW PULSING SYSTEM

Embodiments disclosed herein are directed to a flow pulsing system including a rotor, a stator, a dart which is configured to releasably couple with the rotor, and a nozzle releasably coupled to the rotor which is configured to control a fluid flow through the rotor. In some embodiments, the system uses a screen disposed therein which includes an inner bore in fluid communication with a plurality of lobe cavities along the rotor. In some embodiments, the system uses a stationary valve and an oscillating valve having a plurality of oscillating valve ports which are in fluid communication with the plurality of lobe cavities. 1. A flow pulsing system comprising:a housing having a central axis, a first end, a second end opposite the first end, and a bore extending along the central axis from the first end to the second end;a stator disposed within the bore of the housing having a plurality of lobe cavities; an axis offset from the central axis;', 'a plurality of lobes that mate with the plurality of lobe cavities; and', 'a thru bore extending along the axis; and, 'a rotor disposed within the stator, the rotor comprising a first radially outer guide section;', 'a second radially outer guide section;', 'a tip;', 'an inner bore; and', 'a releasable nozzle configured to control a first fluid flow through the inner bore and the thru bore., 'a dart configured to releasably couple with the thru bore of the rotor, the dart comprising2. The flow pulsing system of claim 1 , wherein the rotor further includes a seat within the thru bore claim 1 , wherein the seat is configured to engage with the tip of the dart.3. The flow pulsing system of claim 1 , wherein the nozzle couples with the dart along an inner coupling surface of the dart.4. The flow pulsing system of claim 3 , wherein the nozzle is configured to direct the first fluid flow to a path between the plurality of lobe cavities of the stator and the plurality of lobes along the rotor and bypass a second fluid flow into the ...

DOWNHOLE OSCILLATION APPARATUS

A downhole oscillation tool includes a Moineau-type positive displacement pulse motor and a valve assembly for use in a drill string. The pulse motor includes a rotor configured to nutate within the bore of a stator. The rotor has at least two helical lobes that extend the length of the rotor, and the stator bore defines at least three helical lobes that extend the length of the stator. The valve assembly includes a first valve plate connected to the bottom end of the rotor and abuts the second valve plate to form a sliding seal. The second valve plate is fixedly coupled to the stator and remains stationary. First valve ports extend axially through the first valve plate, and second valve ports extend axially through the second valve plate. The first valve ports and second valve ports intermittently overlap as the first valve plate slides across the second valve plate to create pulses in the drilling fluid which is pumped through the tool to power the motor and valve assembly. The tool can generate pulses of different amplitudes and different wavelengths in each rotational cycle. The tool further includes a drop ball assembly configured to activate and deactivate the tool.

METHOD AND APPARATUS FOR VIBRATING HORIZONTAL DRILL STRING TO IMPROVE WEIGHT TRANSFER

An apparatus for use in a horizontal section of a drill string is disclosed. The apparatus includes a motor that is connected to the horizontal section of the drill string. The motor is adapted to impart vibrations in the horizontal section of the drill string, where the vibrations are at about the lateral resonant frequency of the horizontal section of the drill string. 1. An apparatus for use in a horizontal section of a drill string comprising:a motor, wherein the motor is connected to the horizontal section of the drill string; anda mandrel, the mandrel being a hollow shaft, the mandrel having a longitudinal axis, the mandrel having an external wall and an inner wall, the external wall or inner wall including a partial cutout, the partial cutout providing an imbalance in the mandrel, such that the motor rotates the mandrel to impart lateral vibrations in the horizontal section of the drill string and wherein the vibrations are at about a lateral resonant frequency of the horizontal section of the drill string.2. The apparatus of claim 1 , wherein the vibrations are imparted generally at the lowest lateral resonant frequency3. The apparatus of claim 2 , wherein the vibrations are in the frequency range of 1 to 10 Hz.4. The apparatus of claim 3 , wherein the vibrations are in the frequency range of 2 to 5 Hz.5. The apparatus of claim 1 , wherein the motor is a mud motor or an electrical motor.6. A mud motor for use in a horizontal section of a drill string comprising:a rotor;a stator engaged with the rotor adapted to cause a drive train coupled to the rotor to rotate at a rotary speed;a mandrel mechanically connected to the drive train, the mandrel being a hollow shaft, the mandrel having a longitudinal axis, the mandrel having an external wall and an inner wall, the external wall or inner wall including a partial cutout, the partial cutout providing an imbalance in the mandrel such that when rotated by the rotor, the mandrel generates lateral vibrations in the ...

GROUND LOOP HEAT EXCHANGER

A method for installing a ground heat exchange pipe uses a drive mechanism driven downwardly by a drive head including an elongate drive mandrel for driving a portion of heat exchange pipe into the ground. The pipe is attached to an inserting tool connected to the drive mandrel so that the tool carries the portion of heat exchange pipe into the ground. The mandrel engages the inserting tool which includes a base and tie attached to a portion of the pipe and drives the inserting tool into unbroken ground to a finite depth and then the drive head extracts the mandrel for reuse on the next installation leaving the inserting tool behind with the heat exchange pipe. The inserting tool includes side components engaging the heat exchange pipe and protecting it from damage as the heat exchange pipe is driven into the ground. A fluid supply duct can be provided in the mandrel. 1. A method for installing a ground heat exchange pipe in ground comprising:using a drive mechanism including an elongate drive mandrel for driving a portion of heat exchange pipe in a generally downward direction into the ground;engaging and carrying the heat exchange pipe by an inserting tool connected to the drive mandrel as the portion of heat exchange pipe is driven into the ground;where the inserting tool carries the portion of heat exchange pipe into the ground during its installation;where the mandrel of the drive mechanism engages the inserting tool carrying the heat exchange pipe and drives the inserting tool into the ground to a finite depth then extracts the mandrel for reuse on the next installation leaving the inserting tool behind with the heat exchange pipe.2. (canceled)3. The method according to wherein the inserting tool is driven into unbroken ground without requirement for a pre-formed hole and wherein the inserting tool includes components engaging the heat exchange pipe and protecting it from damage as the heat exchange pipe is driven into the ground.4. The method according to ...

SYSTEM AND METHOD FOR CONTROLLING LINEAR MOVEMENT USING A TAPERED MR VALVE

A tapered magnetorheological (MR) valve includes a first fixed housing that remains in a fixed position along a central axis of the tapered MR valve. A second housing moves linearly along the central axis of the tapered MR valve. The first fixed housing and the second housing together define a first MR fluid chamber and a second MR fluid chamber for containing MR fluid interconnected by an MR fluid channel. The second housing moves linearly between a first position and a second position along the central axis of the tapered MR valve to control flow of the MR fluid through the MR fluid channel. 1. A tapered magnetorheological (MR) valve , comprising:a first fixed housing that remains in a fixed position along a central axis of the tapered MR valve;a second housing that moves linearly along the central axis of the tapered MR valve;wherein the first fixed housing and the second housing together define a first MR fluid chamber and a second MR fluid chamber for containing MR fluid interconnected by an MR fluid channel; andwherein the second housing moves linearly between a first position and a second position along the central axis of the tapered MR valve to control flow of the MR fluid through the MR fluid channel.2. The tapered MR valve of further comprising:a coil wire for generating a magnetic field responsive to a received signal, the magnetic field altering a viscosity of the MR fluid; andwherein the first fixed housing further defines at least one slot for containing the coil wire.3. The tapered MR valve of claim 2 , wherein the received signal is applied to the coil wire when the second housing is in the first position to restrict the flow of the MR fluid through the MR fluid channel.4. The tapered MR valve of claim 2 , wherein when the received signal is not applied to the coil claim 2 , the second housing moves to the second position when more rapid flow of the MR fluid through the MR fluid channel is required.5. The tapered MR valve of claim 1 , wherein the ...

Resonance-Enabled Drills, Resonance Gauges, and Related Methods

Provided herein is a resonance-enabled drill, comprising a housing; one or more force generators chosen from one or more voice coil actuators, one or more eccentrics driven by one or more electric motors, or combinations thereof; one or more sonic heads coupled to the one or more force generators; a plurality of springs coupling the housing to the one or more sonic heads; and a drill rod disposed on its proximal end to the one or more sonic heads. Also provided is a gauge for a sonic drill configured to display information to an operator, for example indicating to the operator when the drill is on or near resonance. Further provided are methods for selecting a resonance frequency in a sonic drill. 1. A resonance-enabled drill , comprising:a housing;one or more force generators chosen from one or more voice coil actuators, or one or more eccentrics driven by one or more electric motors;one or more sonic heads coupled to the one or more force generators;a plurality of springs coupling the housing to the one or more sonic heads; anda drill rod disposed on its proximal end to the one or more sonic heads.2. The drill of claim 1 , further comprising a bit disposed on the distal end of the drill rod.3. The drill of claim 1 , wherein the one or more voice coil actuators comprise a coil assembly rigidly disposed on the housing or on a reflection mass and a magnet assembly disposed on the one or more sonic heads.4. The drill of claim 3 , wherein the coil assembly of each of the one or more voice coil actuators has little to no motion compared to the one or more sonic heads.5. The drill of claim 1 , wherein each eccentric is driven by one electric motor.6. The drill of claim 5 , wherein the one or more force generators comprises two paired sets of eccentrics configured to exert no vertical force claim 5 , using a 180° phase angle between the two paired sets of eccentrics.7. The drill of claim 6 , wherein the one or more force generators comprises two paired sets of eccentrics ...

Vibratory Drilling System and Tool For Use In Downhole Drilling Operations and A Method For Manufacturing Same

A vibratory drilling tool for use coupling to a drill string in a borehole in downhole drilling operations has a tool body having a fluid flow path extending along a longitudinal axis there through, a first pin end and an opposite box end. A cam body portion extending longitudinally along the length of said tool has a generally smooth cam arc section on an opening side with at least one elongated flat surface extending longitudinally along a closing side of the cam body portion from a pin end tapering shoulder to a box end tapering shoulder. The cam body portion when coupled to said drill string lifts a generally horizontal drill pipe section of the drill string vertically in the borehole as the drill pipe section is rotated in the borehole. 1. A vibratory drilling tool for use in a generally deviated or horizontal section of a borehole in downhole horizontal drilling operations comprising:a tool body having a fluid flow path extending along a longitudinal axis therethrough said longitudinal axis of said tool body being generally parallel to a longitudinal axis of said generally deviated or horizontal section of said borehole, a first pin end and an opposite box end for coupling said tool body to a drill string;a cam body portion extending longitudinally along a length of said tool having a generally smooth cam arc section on an opening side with at least one elongated flat surface extending longitudinally along a closing side of said cam body portion from a pin end tapering shoulder to a box end tapering shoulder, said cam body portion vertically lifting a generally horizontal drill pipe section of said drill string in said generally deviated or horizontal section of said borehole when said tool body is coupled to said drill string and said drill pipe section is rotated in said borehole.2. The vibratory tool of further comprising a threaded portion along an edge of an intersection of said cam arc section and said at least one elongated flat surface of said cam body ...

MECHANICAL FORCE GENERATOR

Disclosed is a mechanical force generator for use in a drillstring that provides a sinusoidal or near sinusoidal oscillating output, comprising: a rotatable cam plate connected to a mass, the cam plate having two opposed oblique bearing surfaces rotatable through a bearing, wherein upon rotation, the two opposed oblique bearing surfaces cam against the bearing to oscillate the mass longitudinally, wherein the bearing comprises opposing bearings for bearing against the opposed oblique bearing surfaces and wherein at least one bearing adjusts to follow the respective opposed bearing surface and maintain engagement. 1. A mechanical force generator for use in a drillstring that provides a sinusoidal or near sinusoidal oscillating output , comprising:a rotatable cam plate connected to oscillate a mass to indirectly provide oscillations to the drillstring and/or a housing of the drillstring, the cam plate having two opposed oblique bearing surfaces rotatable through a bearing, wherein upon rotation, the two opposed oblique bearing surfaces cam against the bearing to oscillate the mass longitudinally relative to the drillstring and/or the housing of the drill string, the oscillations being transferred to the drill string and/or drillstring housing, wherein the bearing comprises opposing bearings for bearing against the opposed oblique bearing surfaces and wherein at least one bearing adjusts to follow the respective opposed bearing surface and maintain engagement.2. A mechanical force generator for use in a drillstring that provides a sinusoidal or near sinusoidal oscillating output , comprising:a rotatable cam plate connected to oscillate a mass to indirectly provide oscillations to the drillstring and/or a housing of the drillstring, the cam plate having two opposed oblique bearing surfaces rotatable through a bearing, the bearing comprising at least one opposing knuckle bearing for each opposed oblique bearing surface, each knuckle bearing comprising a socket and ...

VIBRATION ASSEMBLY AND METHOD

A downhole vibration assembly includes a valve positioned above a rotor that is disposed at least partially within a stator. The rotor is operatively suspended within an inner bore of a housing and configured to rotate within the stator as a fluid flows through the vibration assembly. The valve includes a rotating valve segment and a stationary valve segment each including at least one fluid passage. The rotating valve segment rotates with a rotation of the rotor. In an open position, the fluid passages of the valve segments are aligned and a fluid flows through the valve. In a restricted position, the fluid passages of the valve segments are partially or completely unaligned, thereby temporarily restricting the fluid flow through the valve to create a pressure pulse. The unobstructed pressure pulse is transmitted through the drill string or coiled tubing above the valve. 1. A downhole vibration assembly for transmitting a pressure pulse in a drill string above a drill bit , comprising:a positive displacement power section disposed in an inner bore of a housing, the positive displacement power section including a rotor disposed at least partially within a stator, wherein the rotor is operatively suspended within the inner bore of the housing to rotate within the stator upon a fluid flow through the positive displacement power section; anda valve disposed above the positive displacement power section within the inner bore of the housing, the valve including a rotating valve segment and a stationary valve segment each including at least one fluid passage, wherein the rotating valve segment is configured to rotate with a rotation of the rotor for cycling the valve between an open position and a restricted position, wherein in the open position the fluid passage of the rotating valve segment is aligned with the fluid passage of the stationary valve segment, wherein in the restricted position the fluid passage of the rotating valve segment is at least partially unaligned ...

Drilling apparatus and method

A drilling apparatus including a drill bit and a nutation device. The drilling apparatus is configured to enable the drill bit to be rotated at a rotation frequency while the nutation device simultaneously nutates the drill bit at a nutation frequency. The nutation device may include a vibrating device for imposing vibrations upon the drilling apparatus at a vibration frequency, thereby causing nutation of the drill bit at the nutation frequency. The drilling apparatus may include a tuning mechanism for tuning the vibration frequency of the vibrating device. A method including rotating a drill bit at a rotation frequency and simultaneously nutating the drill bit at a nutation frequency.

DOWNHOLE VIBRATION TOOL

A downhole vibration tool that permits tool retrieval therethrough is provided. The downhole vibration tool has an outer housing with an inner bore and a longitudinal axis, a rotating impeller that rotates within the inner bore of the outer housing, the rotating impeller defining an outer flow passage and an inner flow passage nested within the outer flow passage. The rotating impeller carries impeller vanes that are angled relative to a rotational axis and that extend into the outer flow passage such that fluid passing through the outer flow passage impinges on the impeller vanes to cause the rotating impeller to rotate. A flow restrictor having a variable flow area is positioned in the outer flow passage adjacent to the impeller vanes, and the rotation of the impeller vanes causes the flow area of the flow restrictor to periodically increase and decrease. 1. A downhole vibration tool that permits tool retrieval therethrough , the downhole vibration tool comprising:an outer housing having an inner bore and a longitudinal axis;a rotating impeller that rotates within the inner bore of the outer housing, the rotating impeller defining an outer flow passage and an inner flow passage nested within the outer flow passage, the rotating impeller carrying impeller vanes that are angled relative to a rotational axis and that extend into the outer flow passage such that fluid passing through the outer flow passage impinges on the impeller vanes to cause the rotating impeller to rotate; anda flow restrictor having a variable flow area positioned in the outer flow passage and adjacent to the impeller vanes, the rotation of the impeller vanes causing the flow area of the flow restrictor to periodically increase and decrease.2. The downhole vibration tool of claim 1 , further comprising a flow diverter having one or more flow restrictions in fluid communication with the inner flow passage and an outer surface in fluid communication with the outer flow passage claim 1 , the flow ...

Drill string axial vibration attenuator

The drill string axial vibration attenuator ( 10 ) is installed in the bottom hole assembly (BHA) of a drill string to attenuate axial and torsional vibrations of the drill string. The vibration attenuator ( 10 ) includes a massive elongate stabilizer ( 14 ) installed in a sealed chamber ( 12 ) that is, in turn, rigidly installed within the BHA of the drill string. Clearance between the inner wall of the chamber ( 12 ) and the stabilizer ( 14 ) is provided to preclude frictional interference therebetween. The stabilizer mass ( 14 ) is supported from below by a compression spring ( 18 ) and a shock absorber or damper ( 24 ) at the top to allow movement of the mass ( 14 ). The stabilizer ( 14 ) substantially reduces or eliminates axial and coupled torsional vibration of the drill string when the mass of the stabilizer ( 14 ), the rate of the spring, and the damper stiffness are properly configured.

Drilling Oscillation Systems and Shock Tools for Same

A shock tool for reciprocating a drillstring includes an outer housing. The outer housing has a central axis, a first end, a second end opposite the first end, and a passage extending axially from the first end to the second end. In addition, the shock tool includes a mandrel assembly coaxially disposed in the passage of the outer housing and configured to move axially relative to the outer housing. The mandrel assembly has a first end axially spaced from the outer housing, a second end disposed in the outer housing, and a passage extending axially from the first end of the mandrel assembly to the second end of the mandrel assembly. The mandrel assembly includes a mandrel and a first annular piston fixably coupled to the mandrel. The first annular piston is disposed at the second end of the mandrel assembly and sealingly engages the outer housing. 1. A shock tool for reciprocating a drillstring , the shock tool comprising:an outer housing having a central axis, a first end, a second end opposite the first end, and a passage extending axially from the first end to the second end;a mandrel assembly coaxially disposed in the passage of the outer housing and configured to move axially relative to the outer housing, wherein the mandrel assembly has a first end axially spaced from the outer housing, a second end disposed in the outer housing, and a passage extending axially from the first end of the mandrel assembly to the second end of the mandrel assembly;wherein the mandrel assembly includes a mandrel and a first annular piston fixably coupled to the mandrel, wherein the first annular piston is disposed at the second end of the mandrel assembly and sealingly engages the outer housing.2. The shock tool of claim 1 , further comprising a second annular piston moveably mounted to the mandrel assembly claim 1 , wherein the second annular piston is disposed in a first annulus radially positioned between the mandrel assembly and the outer housing claim 1 , wherein the first ...

Axial Oscillation Device

A downhole pressure pulsing apparatus comprising: an upper sub that comprises a tube having a hollow interior through which fluid can flow; a middle sub that comprises a tube having a hollow interior through which fluid can flow; a lower sub that comprises a tube having a hollow interior through which fluid can flow; wherein said upper sub is connected to said middle sub by a connection such that the hollow interior of said upper sub is in fluid communication with said middle sub's hollow interior; wherein said middle sub is connected to said lower sub by a connection such that the hollow interior of said middle sub is in fluid communication with said lower sub's hollow interior; an impeller assembly, wherein said impeller assembly comprises an impeller that is rotatably mounted inside said middle sub's hollow interior; a stator, wherein said stator is housed inside said upper sub's hollow interior and wherein said stator directs fluid flow into said impeller; a cam assembly mounted within said lower sub's hollow interior; a restrictor assembly that varies total flow area in order to generate pressure pulses, wherein said restrictor assembly is mounted within said lower sub's hollow interior; and wherein said cam assembly converts rotational motion created by said impeller assembly to reciprocating axial motion within said restrictor assembly. 1. A downhole pressure pulsing apparatus , comprising:an upper sub that comprises a tube having a hollow interior through which fluid can flow;a middle sub that comprises a tube having a hollow interior through which fluid can flow;a lower sub that comprises a tube having a hollow interior through which fluid can flow;wherein said upper sub is connected to said middle sub by a connection such that the hollow interior of said upper sub is in fluid communication with said middle sub's hollow interior;wherein said middle sub is connected to said lower sub by a connection such that the hollow interior of said middle sub is in ...

DOWNHOLE VIBRATORY BYPASS TOOL

A downhole tool is disclosed herein that has an inlet for receiving fluid into a housing of the downhole tool. The downhole tool further includes a vibratory apparatus at least partially disposed within the housing of the downhole tool, the vibratory apparatus having an operational flow path disposed therein to operate the vibratory apparatus when fluid flowing through the operational flow path is above a predetermined pressure. Furthermore, the downhole tool has a bypass passageway disposed in the housing for providing an additional flow path for fluid through the downhole tool to prevent fluid from reaching the predetermined pressure in the operational flow path of the vibratory apparatus, the bypass passageway selectively blockable such that fluid in the operational flow path is increased above the predetermined pressure to activate the vibratory apparatus when the bypass passageway is blocked. A method of using the downhole tool is also disclosed. 1. A downhole tool , the tool comprising:an inlet for receiving fluid into a housing of the downhole tool;a vibratory apparatus at least partially disposed within the housing of the downhole tool, the vibratory apparatus having an operational flow path disposed therein to operate the vibratory apparatus when fluid flowing through the operational flow path is above a predetermined pressure; anda bypass passageway disposed in the housing for providing an additional flow path for fluid through the downhole tool to prevent fluid from reaching the predetermined pressure in the operational flow path of the vibratory apparatus, the bypass passageway selectively blockable such that fluid in the operational flow path is increased above the predetermined pressure to activate the vibratory apparatus when the bypass passageway is blocked.2. The tool of wherein the downhole tool includes a first screen disposed in the housing uphole of the vibratory apparatus to direct a fluid blocking member toward the bypass passageway and permit ...

DOWNHOLE VIBRATORY BYPASS TOOL

A downhole tool is disclosed herein that has an inlet for receiving fluid into a housing of the downhole tool. The downhole tool further includes a vibratory apparatus at least partially disposed within the housing of the downhole tool, the vibratory apparatus having an operational flow path disposed therein to operate the vibratory apparatus when fluid flowing through the operational flow path is above a predetermined pressure. Furthermore, the downhole tool has a bypass passageway disposed in the housing for providing an additional flow path for fluid through the downhole tool to prevent fluid from reaching the predetermined pressure in the operational flow path of the vibratory apparatus, the bypass passageway selectively blockable such that fluid in the operational flow path is increased above the predetermined pressure to activate the vibratory apparatus when the bypass passageway is blocked. A method of using the downhole tool is also disclosed. 1. A downhole tool , comprising:an inlet;an outlet;a vibratory tool;an operational flow path extending through the vibratory tool and in communication with the inlet and the outlet, in which the vibratory tool is configured to produce vibrations in response to flow through the operational flow path;a bypass passageway in communication with the inlet and the outlet; anda flow blocking member displaceable through the inlet into the bypass passageway, in which the flow blocking member is configured to block flow through the bypass passageway.2. The downhole tool of claim 1 , further comprising a screen configured to exclude the flow blocking member from the operational flow path.3. The downhole tool of claim 1 , further comprising a screen configured to deflect the flow blocking member to the bypass passageway.4. The downhole tool of claim 1 , further comprising a screen positioned downstream of the inlet claim 1 , and in which flow through the screen is permitted between the inlet and the operational flow path.5. The ...

Downhole Extended Reach Tool and Method

A downhole tool includes a valve assembly and a shock absorbing assembly. The valve assembly includes a valve spring operatively connected to a valve body. The shock absorbing assembly includes a spring operatively connected to a shock absorbing body having a fluid passage therethrough. The valve body is configured to selectively engage the shock absorbing body to create a fluid tight seal over the fluid passage in a first position, and to allow a fluid flow through the fluid passage in a second position. The repeated movement cycle of the selective engagement between the valve body and the shock absorbing body generates a pressure pulse or a varying pressure differential across the downhole tool. The repeated movement cycle is powered by a fluid flow. The tool may be selectively activated and deactivated.

DRILLING SPEED INCREASING DEVICE DRIVEN BY DOWNHOLE MOTOR FOR GENERATING SHOCK VIBRATION

The present invention discloses a drilling speed increasing device driven by a downhole motor for generating shock vibration. The device uses the rotational energy of a screw motor as power to drive a lower vibration starter to rotate. Vibration starting steel balls have the function of reducing friction in the interior. During axial reciprocating motion of the upper vibration starter, a spring matched with the upper vibration starter is periodically compressed to generate spring energy. The spring energy reacts on the lower vibration starter and a main shaft connected with a drill bit, so as to periodically provide drilling pressure for the drill bit. Periodic motion of the upper vibration starter and the spring produces periodic axial vibration on the tool. 1the drill bit sub is provided with a lower TC bearing outer ring; the top end of the lower TC bearing outer ring is provided with a lower locking nut; a lower TC bearing outer ring positioning sheath is arranged at the bottom end of the lower TC bearing outer ring; the lower housing is provided with a lower TC bearing inner ring; the lower TC bearing outer ring is in close contact with the lower TC bearing inner ring; the main shaft is provided with an upper TC bearing outer ring; the top end of the upper TC bearing outer ring is provided with an upper locking nut; a thrust bearing group is arranged at the bottom end of the upper TC bearing outer ring; the upper housing is provided with an upper TC bearing inner ring; and the upper TC bearing outer ring is in close contact with the upper TC bearing inner ring;a first bulge is arranged on the top end of the upper vibration starter; a first groove matched and connected with the first bulge is arranged on the bottom end of the shock seat; a second bulge is arranged on the bottom end of the lower vibration starter; and a second groove matched and connected with the second bulge is arranged on the top end of the lower locking nut;a shim for adjusting a pre- ...

SYSTEM AND METHOD FOR TRANSMITTING INFORMATION IN A BOREHOLE

Systems and methods for producing controlled vibrations within a borehole. In one example, the system includes a movement mechanism and a controller. The movement mechanism is configured to enable translational movement of a first surface relative to a second surface to allow the first surface to impact the second surface to produce a plurality of beats. The frequency and amplitude of the beats may be selectively controlled by suppressing or dampening the beats. The controller is configured to selectively control an amplitude or frequency of the beats to encode information therein, where the amplitude of a beat may be selectively controlled by dampening or suppressing the impact of the first surface and the second surface. 1. A system for transmitting information comprising:a first plate having a first surface, the first plate positioned within a borehole;a second plate having a second surface, wherein the second plate is positioned within the borehole;an assembly coupled to either the first plate or the second plate such that the assembly and the first plate or second plate, respectively, move together; anda movement mechanism configured to enable relative movement of the first plate or the second plate to allow the first surface and the second surface to impact and thereby produce a plurality of vibration beats.2. The system of claim 1 , further comprising a control mechanism configured to selectively control an amplitude of the plurality of vibration beats to encode information claim 1 , wherein the vibration control mechanism is further configured to suppress the amplitude of a particular vibration beat below a detection threshold to skip that vibration beat while encoding information.3. The system of wherein the control mechanism is configured to control the amplitude of a vibration beat to match one of a plurality of defined amplitude values.4. The system of wherein the plurality of defined amplitude values are bounded by a first amplitude value representing a ...

METHOD AND AN INSTALLATION FOR CUTTING UP A MASS OF REINFORCED CONCRETE

Disclosed are examples of methods and systems for cutting up a reinforced concrete mass, in which a drilling tool is provided. In various embodiments, the drilling tool comprises: a drill tube earning a cutter member; a device for causing the drill tube to vibrate, the device comprising a vibration generator for generating longitudinal vibration in the drill tube; a device for injecting a drilling fluid at the distal end of the drill tube; and a device for moving the drill tube along its longitudinal direction. In the disclosed methods and systems, the reinforced concrete mass is cut up by drilling at least one hole with the help of the drill tool by causing the drill tube to vibrate while injecting the drilling fluid into the mass from the distal end of the drill tube. 1. A cutting method for cutting up a reinforced concrete mass , the method comprising: a drill tube having a longitudinal direction and presenting a distal end that carries a cutter member;', 'a device for causing the drill tube to vibrate, which device comprises a vibration generator for generating longitudinal vibration in the drill tube;', 'a device for injecting a drilling fluid into the reinforced concrete mass at the distal end of the drill tube; and', 'a device for moving the drill tube in its longitudinal direction; and, 'providing a drill tool comprisingcutting the reinforced concrete mass by drilling at least one drillhole with the help of the drill tool while causing the drill tube to vibrate with the help of the vibration generator and simultaneously injecting the drilling fluid into the reinforced concrete mass at the distal end of the drill tube.2. The cutting method according to claim 1 , further comprising:making a succession of intersecting drillholes in the reinforced concrete mass with the help of the drill tool while causing the drill tube to vibrate, thereby obtaining a continuous line of cut.3. The cutting method according to claim 2 , further comprising:in the event of one of ...

Acoustic generator and associated methods and well systems

A well system and associated method can include an acoustic generator which can be used to excite a formation with acoustic waves transmitted from the acoustic generator. Another well system and associated method can include an acoustic generator which can transmit acoustic waves into cement surrounding a casing. Another well system and associated method can include an acoustic generator which can be used to transmit acoustic waves into an annulus surrounding a well screen during or after a gravel packing operation. Another well system and associated method can include an acoustic generator which can be connected in a drill string in close proximity to a drill bit, with the acoustic generator transmitting acoustic waves into a formation ahead of the bit.

DOWNHOLE VIBRATION FOR IMPROVED SUBTERRANEAN DRILLING

A downhole oscillation tool and method for axially vibrating a drill bit. In some embodiments, modular actuation assemblies may be provided, which may be readily interchanged between a housing and a shaft to axially vibrate the shaft with respect to the housing. Modular actuation assemblies may be mechanical, hydraulic, electric, or piezoelectric, for example, and may be characterized by differing oscillation frequencies. In some embodiments, a piezo element may be provided between the housing and the shaft. 1. A downhole oscillation tool for axially vibrating a drill bit , comprising:a tubular housing;a shaft partially disposed within said housing and extending beyond a bottom end of said housing, said shaft being rotatively and axially movable with respect to said housing; anda modular actuator assembly interchangeably carried within said housing and disposed to axially oscillate said shaft with respect to said housing as said shaft rotates with respect to said housing.2. The downhole oscillation tool of further comprising:a ring-shaped shoulder formed around an interior circumference of said housing;a flange formed about an outer circumference of said shaft, said flange located within said housing; anda spring disposed within said housing so as to bias said flange towards said shoulder; whereinsaid modular actuator assembly is interchangeably carried between said shoulder and said flange and disposed to axially oscillate said piston with respect to said shoulder against said spring as said shaft rotates with respect to said housing.3. The downhole oscillation tool of wherein:said modular actuator assembly includes an axial bore formed therethrough; andsaid shaft passes through said bore.4. The downhole oscillation tool of wherein:at least a portion of said modular actuator assembly is rotationally fixed with respect to said housing by one of the group consisting of at least a hirth joint, a spline, a serration, and a keyed joint.5. The downhole oscillation tool ...

METHOD AND APPARATUS FOR EMPLACING COLUMNS

A sonic drilling apparatus with adapter for emplacing columns includes a sonic drilling apparatus generating vibrational waves and having a fitting. An adapter is coupled to the fitting for removably attaching a column to the sonic drill apparatus. A centering assembly is positioned below the adaptor for receipt of a column therethrough. 115-. (canceled)16. A method of emplacing a column comprising the steps of:providing a sonic drilling apparatus generating vibrational waves and including a fitting;providing an adapter coupled to the fitting for removably attaching a column to the sonic drill apparatus;providing a centering assembly positioned below the adaptor for receipt of a column therethrough;providing a column;attaching the adapter to the column;positioning the centering assembly around the column to prevent lateral movement thereof; anddriving the column into a supporting substrate to a depth desired and sufficient to provide stability to the column.17. A method of emplacing a column as claimed in wherein the column is one of a tubular polygonal column and an I-beam.18. A method of emplacing a column as claimed in wherein claim 16 , the step of providing a centering assembly comprises the steps of:providing a track carried by the sonic drill apparatus;providing a carriage carried by and reciprocally moveable along the track; andproviding a centering frame including a base coupled to and extending from the carriage. This application is a Continuation-In-Part of U.S. patent application Ser. No. 15/817,857, filed Nov. 20, 2017, which claims the benefit of U.S. Provisional Application No. 62/424,708, filed 21 Nov. 2016 and U.S. Provisional Application No. 62/429,704, filed 2 Dec. 2016.This invention relates to construction equipment and methods.More particularly, the present invention relates to methods and equipment for emplacing columns in a surface.In the field of construction, emplacing columns for a structure, such parking shade structures, requires a great ...

SHOCK WAVES FOR OIL SEPARATION

A pressure shock wave apparatus applies shock waves to separate substances, such as oil, from a water mixture in an enclosure. The substance, such as oil, is moved toward a substance removal conduit and the water moved toward a water conduit from action of the shock wave apparatus. 1. An apparatus for separating oil from water comprising:an enclosure containing a mixture including oil and water;an inlet conduit into the enclosure;an upper oil conduit near a top of the enclosure;a lower water conduit near a bottom of the enclosure; andone more shock wave devices positioned to apply shock waves to separate oil from the mixture and push oil to the upper oil conduit.2. The apparatus of claim 1 , further comprising a plurality of shock wave devices positioned around different locations of the enclosure.3. The apparatus of claim 1 , further comprising a shock wave device positioned at the bottom of the enclosure.4. The apparatus of claim 3 , wherein the enclosure is ellipsoidal.5. The apparatus of claim 4 , further comprising water pump coupled to the water conduit and an oil pump coupled to the upper oil conduit.6. The apparatus of claim 5 , further comprising an automatic controller coupled to a mixture valve connected to the inlet conduit claim 5 , an oil valve connected to the upper oil conduit and a water valve connected to the lower water conduit.7. The apparatus of claim 1 , further comprising a water pump coupled to the lower water conduit and an oil pump coupled to the upper oil conduit.8. The apparatus of claim 7 , further comprising an automatic controller coupled to a mixture valve connected to the inlet conduit claim 7 , an oil valve connected to the upper oil conduit and a water valve connected to the lower water conduit.9. The apparatus of claim 2 , further comprising a water pump coupled to the lower water conduit and an oil pump coupled to upper oil conduit.10. The apparatus of claim 9 , further comprising an automatic controller coupled to a mixture ...

DOWNHOLE VIBRATION FOR IMPROVED SUBTERRANEAN DRILLING

A downhole oscillation tool and method for axially vibrating a drill bit. In some embodiments, modular actuation assemblies may be provided, which may be readily interchanged between a housing and a shaft to axially vibrate the shaft with respect to the housing. Modular actuation assemblies may be mechanical, hydraulic, electric, or piezoelectric, for example, and may be characterized by differing oscillation frequencies. In some embodiments, a piezo element may be provided between the housing and the shaft. 1. A downhole oscillation tool for axially vibrating a drill bit , comprising:a tubular housing;a shaft partially disposed within said housing and extending beyond a bottom end of said housing, said shaft being rotatively and axially movable with respect to said housing; anda piezoelectric actuator assembly disposed within said housing so as to axially oscillate said shaft with respect to said housing.2. The downhole oscillation tool of further comprising:a ring-shaped shoulder formed around an interior circumference of said housing;a flange formed about an outer circumference of said shaft, said flange located within said housing; anda spring disposed within said housing so as to bias said flange towards said shoulder; whereinsaid piezoelectric actuator assembly axially oscillates said flange with respect to said shoulder.3. The downhole oscillation tool of further comprising:an electrical generator disposed within said housing and coupled so as to provide power to said piezoelectric actuator assembly.4. The downhole oscillation tool of wherein said piezoelectric actuator assembly comprises:a ring-shaped expansion member with at least one piezo element.5. The downhole oscillation tool of wherein:said at least one piezo element is ring-shaped and polarized to expand axially under an applied electric field.6. The downhole oscillation tool of wherein:said expansion member includes a flextensional piezo actuator.7. The downhole oscillation tool of wherein said ...

EXTENDED REACH DRILLING

Apparatus, methods and uses that allow extended reach drilling by virtue of the provision in the drillstring and to downhole tools collective vibrations, not tuned specifically to a single resonant frequency, from a hammer assembly that provides vibrations of different frequency ranges. 1. A method of extended reach drilling which comprisesproviding a top hammer assembly from which a drill string is dependant, the top hammer assembly, or the top hammer assembly and the proximate region of the drill string, being configured by mass or cross sectional impedances, excitation features, or the like to provide excitations to provide multiple localised bands of frequencies that differ from the band or bands of frequencies (beat frequency) generated at the strike interface, the variation of frequencies sufficient to allow extended reach drilling, andoperating the top hammer assembly during operation of the drill string in an extended reach drilling operation, without specifically tuning the drill string for resonance, although some optimisation responsive to different strata might occur.2. A method as claimed in wherein said top hammer to be powered by hydraulic claim 1 , pneumatic claim 1 , electric claim 1 , mechanical or electromagnetic means.3. A method of extended reach drilling which comprisesproviding a top hammer assembly from which a drill string is dependant, the top hammer assembly, or the top hammer assembly and the proximate region of the drill string, being configured by impedances, excitation features, masses, or the like to increase the spread of vibrational frequencies to pass into and downhole along the drill string from those generated at the impact interface of the top hammer assembly,the method comprising operating the top hammer assembly during drill string dependant downhole operations at a power, or in a finite power range, into the top hammer assembly, without reference to drill string length for resonance purposes.4. A method of to wherein there ...

DRILLING CONTROL AND INFORMATION SYSTEM

A drilling control and information system comprising: a rig site network including a drilling equipment controller and a drilling parameter sensor; a downhole sensor communicatively coupled to the rig site network; a data center communicatively coupled to the rig site network; a remote access site communicatively coupled to the data center; and an application communicatively coupled to the rig site network, wherein the application receives data from the drilling parameter sensor and the downhole sensor and issues an operating instruction to the drilling equipment controller. 1. A system for drilling control and information , comprising:a rig site network including a drilling equipment controller;a downhole sensor coupled to a drill sting and communicatively coupled to the rig site network;a data center communicatively coupled to the rig site network;a remote access site communicatively coupled to the data center; anda drilling application communicatively coupled to the rig site network, wherein the drilling application receives data from the downhole sensor and determines position of the drill string.2. The system of claim 1 , wherein the downhole sensor measures downhole pressure.3. The system of claim 2 , wherein the drilling application is operable to calculate a true vertical depth using the measured downhole pressure.4. The system of claim 1 , wherein the downhole sensor provides data indicating performance of a downhole directional drilling tool.5. The system of claim 4 , wherein the drilling application is operable to evaluate the data received from the downhole sensor against a well plan.6. The system of claim 5 , wherein the well plan is stored in the data center claim 5 , the remote access site claim 5 , and/or the rig site network.7. The system of claim 5 , wherein the drilling application is operable to generate an operating instruction based on the evaluation of the data against the well plan.8. The system of claim 1 , wherein the downhole sensor is ...

SYSTEM AND METHOD FOR SURFACE MANAGEMENT OF DRILL-STRING ROTATION FOR WHIRL REDUCTION

A system and method to reduce a whirl effect on a rotation of a drill string with an AC induction motor mechanically coupled to a rotary drilling system and configured to drive the rotary drilling system and the drill string attached thereto. Additionally, the system includes an electronic inverter to generate supplied power for the AC induction motor and a controller configured to drive the operation of the electronic inverter to impose a virtual drive characteristic relating a torque output of the motor with speed of the motor, determine a desired nominal operating point, and determine presence of whirl in the drill string from torque of the rotary drilling system and speed of the drill string. 1. A system to reduce a whirl effect on a rotation of a drill string , comprising:an AC induction motor mechanically coupled to a rotary drilling system and configured to drive the rotary drilling system and the drill string attached thereto;an electronic inverter to generate supplied power for the AC induction motor; and drive the operation of the electronic inverter to impose a virtual drive characteristic relating a torque output of the motor with speed of the motor;', 'determine a desired nominal operating point; and', 'determine presence of whirl in the drill string from torque of the rotary drilling system and speed of the drill string., 'a controller configured to2. The system of claim 1 , wherein the controller is configured to adjust the speed of the drill string in response to the determination of presence of whirl.3. The system of claim 1 , wherein the controller is configured to differentiate between whirl and stick-and-slip phenomena along the drill string.4. The system of claim 1 , wherein the virtual drive characteristic is a linear relation between torques of the motor versus speeds of the motor claim 1 , while passing by a selected averaged operating point.5. The system of claim 1 , wherein the controller is configured to select a first frequency to drive ...

DRILLING APPARATUS

Provided is an apparatus for use in resonance enhanced drilling, which apparatus comprises a drilling module comprising a drill-bit, wherein the apparatus further comprises: 1. An apparatus for use in resonance enhanced drilling , which apparatus comprises a drilling module comprising a drill-bit , wherein the apparatus further comprises:a sensor for measuring one or more parameters relating to the interaction of the drill-bit and the material being drilled; anda sensor for measuring one or more motions of the drill-bit.2. An apparatus according to claim 1 , wherein the one or more parameters relating to the interaction of the drill-bit and the material being drilled comprise one or more impact characteristics of the drill-bit with the material being drilled claim 1 , and/or one or more forces between the drill bit and the material being drilled.3. An apparatus according to claim 2 , which apparatus comprises an accelerometer for measuring the one or more impact characteristics of the drill-bit with the material being drilled claim 2 , and/or a load cell for measuring the one or more forces between the drill-bit and the material being drilled.4. An apparatus according to claim 1 , comprising an eddy current sensor for measuring one or more motions of the drill-bit.5. An apparatus according to claim 1 , the drilling module further comprises:an actuation unit comprising an oscillator for applying axial oscillatory loading to the rotary drill-bit;a vibro-amplification unit for transmitting the oscillatory loading to the drill-bit; anda vibro-isolation unit for reducing or preventing oscillation beyond the drilling module.6. An apparatus according to claim 5 , wherein the vibro-amplification unit comprises a spring system for transmitting the oscillatory loading to the drill-bit claim 5 , and one or more torque restraint units for reducing or preventing torque from the rotary motion of the drill-bit transferring to the actuation unit.7. An apparatus according to claim 1 ...

Friction reduction assembly

A friction reduction tool and assembly are selectively activatable to produce fluid pressure pulses in downhole operations. The assembly includes a variable choke assembly having a rotary component and a stationary component, each with passages that enter into and out of alignment when the rotary component rotates with respect to the stationary component when driven by a rotor. The rotary component, stationary component, and rotor each have a central bore defining a central passage permitting fluid flow from above the assembly to below the assembly.

PROPULSION GENERATOR AND METHOD

A propulsion generator which employs one or more unbalanced rotors, such as a fly wheels or other unbalance rotating members, which can be connected at a lower portion of a downhole coiled tubing string or other downhole tubular string for inducing propulsion of the coiled tubing. The unbalanced rotors may, in one embodiment, be oriented at different positions with respect to each other. The instantaneous fluid flow through the propulsion generator is substantially equivalent to the average fluid flow rate through the tool to provide relatively consistent fluid flow to downhole motors below the propulsion generator for operating the drill bit and/or cutters. 1. A propulsion generator for use in a downhole tool to urge movement of a string of pipe within a well bore , said string of pipe comprising a bottom end portion , comprising:an outer tubular housing mountable to said bottom end portion of said string of pipe, said outer tubular defining a fluid flow path through said outer tubular housing to permit fluid flow through said downhole tool;at least one fly wheel positioned within said outer tubular housing, said at least one fly wheel comprising a center of mass;a plurality of fins operatively connected to said at least one fly wheel and positioned within said fluid path to receive energy from fluid flow through said flow path whereby said at least one fly wheel is rotated, said plurality of fins being rotatable as said at least one fly wheel rotates; anda mounting for said at least one fly wheel which constrains a center of rotation of said at least one fly wheel, whereby said center of mass of said at least one fly wheel is offset from the center of rotation, which results in vibrations being created during rotation of said at least one fly wheel.2. The propulsion generator of claim 1 , wherein said plurality of fins are positioned with respect to said fluid flow path such that during operation as said at least one fly wheel rotates an instantaneous amount of ...

STIMULATION SYSTEMS AND METHODS

Oil stimulation systems enable vibrations, including strong vibrations, to be transmitted towards the productive formation, via the rock matrix, from the exterior of a well casing with minimal attenuation from a component with a greater toughness than the contacted rock. In-situ amplification for the vibration transmission counters attenuation and stimulates oil flow within a productive formation. 1. A system , comprising:a production well in communication with a productive formation,a vibration source above a rock matrix, configured to introduce vibrations in a vibrations direction, anda solid base between the vibration source and the rock matrix, below the vibration source as compared to the vibrations direction, acting as a vibration transmission point to the rock matrix,wherein the vibration source has a downhole vibrating part disposed within a well casing,wherein the base is located downhole,wherein the base has a part in contact with the downhole vibrating part, an area of said contact between the part of the base and the downhole vibrating part defining a first respective active section area,wherein the downhole vibrating part and the base vibrate freely relative to the well casing,wherein at least a portion of the base is disposed exterior of the well casing,wherein the portion of the base part exterior of the well casing contacts the rock matrix, said contacts defining a contacted part of the rock matrix, an area of said contact between the portion of the base part and the contacted part of the rock matrix defining a second respective active section area,wherein the base has a respective toughness greater than the toughness of the contacted part of the rock matrix, andwherein the second respective active section area exceeds the first respective active section area.2. A system according to which further includes a vibrations process-dedicated well wherein the vibration source vibrating part is introduced through the process-dedicated well casing.3. A ...