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Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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05-08-2019 дата публикации

Калибратор-расширитель прямолопастной

Номер: RU0000191424U1
Автор: Андрей Александрович Лазарев, Андрей Александрович Саломатин, Андрей Владимирович Незаметдинов, Арсений Александрович Дронов, Артур Рамилевич Тимашев, Динар Фагимович Гиниятуллин, Никита Сергеевич Воробьёв, Тимур Борисович Нурмухаметов
Принадлежит: Общество с ограниченной ответственностью Научно-производственное предприятие "БУРИНТЕХ" (ООО НПП "БУРИНТЕХ")

Предлагаемая полезная модель относится к породоразрушающему инструменту и может быть использована для калибровки стенок ствола буровой скважины. Калибратор-расширитель прямолопастной включает корпус с присоединительными замковыми резьбами и лопастями, при этом корпус является полым и содержит от 3 до 6 лопастей, каждая из которых имеет две конические грани, расположенные под углом от 3 до 7⁰ к горизонту, снабженные V-образными элементами, и одну калибрующую грань, диаметр которой равен требуемому диаметру скважины, снабженную цилиндрическими элементами. Число лопастей и угол конических граней подбирается исходя из перепада диаметра расширения, характеристик горной породы и требуемой скорости калибрования. Цилиндрические и V-образные элементы могут быть твердосплавными или типа PDC. Благодаря коническим граням обеспечивается расширение диаметра ствола скважины, сглаживается кавернозность, получаемая при бурении, а также появляется возможность проработки ствола скважины при движении вверх и вниз. За счет использования элементов V-образной формы, расположенных на конической грани, достигается увеличение скорости расширения, а элементы цилиндрической формы, расположенные на калибрующей грани, увеличивают ресурс калибратора-расширителя. С помощью предлагаемого изобретения происходит улучшение эксплуатационных характеристик калибратора-расширителя, а именно увеличение скорости калибрования ствола скважины и ресурса калибратора. 2 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 191 424 U1 (51) МПК E21B 10/26 (2006.01) E21B 17/10 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК E21B 10/26 (2019.05); E21B 17/10 (2019.05) (21)(22) Заявка: 2018145175, 18.12.2018 (24) Дата начала отсчета срока действия патента: Дата регистрации: 05.08.2019 (45) Опубликовано: 05.08.2019 Бюл. № 22 Адрес для переписки: 450029, Респ. Башкортостан, г. Уфа, ул. Юбилейная, 4/1, ООО НПП "БУРИНТЕХ" 1 9 1 4 2 4 U 1 (56) Список документов, ...

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Номер записи: 1
08-03-2012 дата публикации

Drill Bit with Adjustable Side Force

Номер: US20120055713A1
Автор: Matthias Meister, Wolfgang E. Herberg
Принадлежит: Baker Hughes Inc

A drill bit according to one embodiment includes a center member configured to rotate at a first speed and an outer member disposed outside the center member, wherein the outer member is configured to rotate at a second speed. The drill bit also includes a first cutter disposed on the center member and a second cutter disposed on the outer member, wherein the first speed and second speeds are configured to control a resultant side force of the drill bit.

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Номер записи: 2
15-03-2012 дата публикации

Method and apparatus for drilling large-diameter hole in ground

Номер: US20120061145A1
Автор: Sun Keun Park
Принадлежит: CORE GEOTECHNICS CO Ltd

The present invention relates to method and apparatus for drilling a large diameter hole in the ground. The present invention comprises a hammer drill ( 40 ) installed at the bottom of a rod ( 104 ) assembled in multi-stages at support means on the ground comprising a pilot hammer drill ( 44, 48, 49 ) and a reamer hammer drill ( 41, 46, 47 ) coupled to each other through a key structure ( 42, 43 ) formed in the vertical direction so as to allow simultaneous rotation and up-and-down movement relative to each other, wherein in a drilling operation, a repetition is made such that the hammer drill ( 40 ) is made to rotate and the pilot hammer drill ( 44, 48, 49 ) is lowered to drill a pilot hole of small diameter (w) to a predetermined depth (d) and is lifted up to original position, and then the reamer hammer drill ( 41, 46, 47 ) is lowered to enlarge the hole to a large diameter (W) down to the predetermined depth (d). Accordingly, the present invention provides effects that a hole of extra large diameter which has not been possible to drill using a single conventional hammer can be drilled, and a hole of large diameter can be drilled using a relatively small drilling machine in drilling operations, thereby reducing the time required to drill holes, facilitating the drilling operations and maintaining a higher level of hole verticality.

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Номер записи: 3
05-04-2012 дата публикации

Steering Mechanism with a Ring Disposed about an Outer Diameter of a Drill Bit

Номер: US20120080233A1
Автор: David R. Hall, Jonathan Marshall, Scott S. Dahlgren
Принадлежит: Individual

In one aspect of the present invention, a steering assembly for downhole directional drilling comprises a drill bit comprising a cutting portion and an outer diameter. A steering ring disposed around the outer diameter, and at least one biasing mechanism disposed intermediate the outer diameter and the steering ring. The at least one biasing mechanism is configured to move the steering ring with respect to the outer diameter.

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Номер записи: 4
23-08-2012 дата публикации

Cutter assembly for tunnel boring machine with pressure compensation

Номер: US20120212034A1
Автор: Aaron J. Shanahan, Brad D. Grothen, Brian B. Khalighi, Carl E. Lenaburg, Jay M. McNeeley, Shinichi Konda, Stephen M. Smading, Timothy A. Lang, Zachary J. Box
Принадлежит: Robbins Co

A pressure-compensated cutter assembly for a tunnel boring machine includes a shaft a cutter ring assembly rotatably mounted on the shaft, and first and second end retainers non-rotatably attached to the shaft. Rotary seal groups, immersed in lubricant, provide a moving seal between the rotating cutter ring assembly and the end retainers. A movable piston member is exposed to ambient pressures, and contacts the lubricant, such that increasing ambient pressure will increase the lubricant pressure, thereby keeping the pressure differential across the seal small. In one embodiment, the piston is a floating retainer portion. In another embodiment, the piston is an annular piston, and in another embodiment, the piston is a plurality of smaller pistons disposed in the first retainer.

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Номер записи: 5
08-11-2012 дата публикации

Slide reamer and stabilizer tool

Номер: US20120279784A1
Автор: Jovan Vacar, Michael James Harvey, Milan Rajic
Принадлежит: Dynomax Drilling Tools Inc Canada

A downhole tool, for selectively reaming a wellbore or stabilizing drill string components within a wellbore, includes an elongate tool body adapted to receive reamer cartridges or stabilizer cartridges depending on the function desired, The reamer cartridges are radially insertable into corresponding pockets in the tool body, with each reamer cartridge having a reamer insert with an array of cutting elements. The reamer insert is disposed within a bushing and is rotatable relative thereto, about a rotational axis transverse to the longitudinal axis of the tool. However, the rotational axis is offset from the tool body axis, resulting in eccentric contact of the cutting elements with the wall of the wellbore, which in turn imparts rotation to the reamer insert when the tool is being moved axially through a wellbore without rotation. When the tool is to be used for stabilization, the reamer cartridges can be removed and replaced with stabilizer cartridges having stabilizer inserts with hard-faced stabilizer cones.

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Номер записи: 6
24-01-2013 дата публикации

Rock bit having a labyrinth seal/bearing protection structure

Номер: US20130020135A1
Автор: Thomas Gallifet
Принадлежит: Varel International Industries LP

A drill tool includes a cone mounted for rotation on a bearing shaft that extends from a bit head. The cone has a first planar base surface opposed to a second planar base surface of the bit head. A first annular groove is formed in the first planar base surface, and a second annular groove is formed in the second planar base surface. The first and second annular grooves are at least partially aligned with each other. The combination of the first and second annular grooves form a first annular gland. A protector ring is inserted into the first annular gland, and functions to divide a fluid path between the bearing shaft of the drill tool and an external environment into a plurality of parallel fluid paths that pass around the protector ring. Each parallel fluid path includes a convolution defined by a plurality of fluid direction changing corners.

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Номер записи: 7
11-04-2013 дата публикации

REAMING SHELL FOR MINING

Номер: US20130087390A1
Автор: Chung Sung-Hoon, KIM Ki-ho
Принадлежит:

A reaming shell for mining is provided. The reaming shell has a shank, and a plurality of pads attached at circumferential intervals from each other to extend lengthwise on an outer periphery of the shank. The reaming shell is coupled to a core bit of a diamond drilling tool for mining. The reaming shell includes a water groove of a recessed shape formed respectively between each adjacent pair of the pads, and extending from a leading edge along a length of the shank. 1. A reaming shell for mining , of the type having a shank , and a plurality of pads attached at circumferential intervals from each other to extend lengthwise on an outer periphery of the shank , the reaming shell coupled to a core bit of a diamond drilling tool for mining , wherein the reaming shell comprises a water groove of a recessed shape formed respectively between each adjacent pair of the pads , and extending from a leading edge along a length of the shank.2. The reaming shell for mining of claim 1 , wherein the water groove comprises: a front portion having a depth with a negative (−) sloped angle claim 1 , which becomes deeper rearward; a middle portion that is substantially flat; and a rear portion having a depth with a positive (+) sloped angle claim 1 , which becomes shallower rearward.3. The reaming shell for mining of claim 2 , wherein the sloped angle of the front portion of the water groove ranges from about −3° to about −10°.4. The reaming shell for mining of claim 2 , wherein in difference between an outer circumference of the water groove at the middle portion of the water groove and an outer circumference of the shank ranges from about 0.7 mm to about 2.2 mm and is the depth of the water groove.5. The reaming shell for mining of claim 3 , wherein in difference between an outer circumference of the water groove at the middle portion of the water groove and an outer circumference of the shank ranges from about 0.7 mm to about 2.2 mm and is the depth of the water groove. The present ...

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Номер записи: 8
18-04-2013 дата публикации

CUTTING TOOL INTEGRATED IN A DRILLSTRING

Номер: US20130092444A1
Автор: Taghipour Khadrbeik Mohammad Ali
Принадлежит:

The present invention discloses a cutting tool integrated in a drillstring for enlarging a borehole, where the cutting tool at least comprises: one or more side mills () arranged along the axis of said drillstring in a reamer housing (), where the side mills () are adapted to be rotated relative to the tool housing () by individual driving means. The self driven rotational side mills may be dome shaped cones where expand radially out of the reamer housing (), or may be a special non-circular dome shaped cones where rotates without expanding. 111-. (canceled)12. A cutting tool integrated in a drillstring , where the cutting tool at least comprises:one or more side cutters arranged along the longitudinal axis of said drillstring in a reamer housing, where the side cutters are adapted to be rotated independent of the reamer housing around an axis that is not parallel with the axis of rotation of said drillstring.13. A cutting tool according to claim 12 ,wherein the side cutters are adapted to be rotated by individual driving means.14. A cutting tool according to claim 12 ,wherein the rotational side cutters extends radially outward from the tool body of the reamer by means of an actuating system.15. A cutting tool according to claim 14 ,wherein an actuating mechanism is provided by one of; drilling mud pressure or mechanical means.16. A cutting tool according to claim 12 ,wherein the side cutters have non circular cross section.17. A cutting tool according to claim 16 ,wherein the side cutters are disposed in openings of the reamer, and is shaped so as in passive state not to protrude out of the diameter defined by the reamer housing, and in rotating state the cutters extreme ends will define a diameter which extends beyond the diameter defined by the rotating reamer housing.18. A cutting tool according to claim 16 ,wherein the side cutters have different sizes of non-circular rotational side cones to enlarge a borehole stepwise, where the smallest side cutter is ...

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Номер записи: 9
18-04-2013 дата публикации

Bearing Assembly for Rotary Drills

Номер: US20130092448A1
Автор: Martin Kevin
Принадлежит: AKTIEBOLAGET SKF

A bearing assembly is for a rotary drill, the drill including a base with a shaft and a bit. The bearing assembly includes a bearing having a central axis and including an inner member disposeable on the shaft and an outer member disposed about the inner member. The outer member is angularly displaceable about the axis with respect to the inner member and having an outer circumferential surface and a recess extending generally radially inwardly from the outer surface. At least one and preferably a plurality of retainer members are each disposed at least partially within the bearing outer member recess and is configured to engage with the bit so as to rotatably couple the bit with the shaft. Preferably, each retainer member includes a generally spherical ball rollable through a passage and into the bearing recess during installation into the recess. 1. A bearing assembly for a rotary drill , the drill including a base with a shaft and a bit , the bearing assembly comprising:a bearing having a central axis and including an inner member disposeable on the shaft and an outer member disposed about the inner member, the outer member being angularly displaceable about the axis with respect to the inner member and having an outer circumferential surface and a recess extending generally radially inwardly from the outer surface; andat least one retainer member disposed at least partially within the bearing outer member recess and configured to engage with the bit so as to rotatably couple the bit with the shaft.2. The bearing assembly as recited in wherein the bit has an inner circumferential surface and a recess extending generally radially outwardly from the surface claim 1 , the bit recess being generally alignable with the bearing recess such that the at least one retainer is simultaneously disposeable at least partially within each of the bit and bearing grooves.3. The bearing assembly as recited in wherein the recess is formed as an at least partially annular groove ...

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Номер записи: 10
25-04-2013 дата публикации

DRILL BITS HAVING ROTATING CUTTING STRUCTURES THEREON

Номер: US20130098688A1
Автор: Wu Jian, YONG ZHOU
Принадлежит: Smith International, Inc.

A drill bit may include a bit body rotatable about a longitudinal axis and having, at one end, a connection for securing the drill bit to a drill string and having a face opposite the connection end; and a plurality of cutting structures having at least one fixed cutting structure disposed on the bit body face and at least one cutting body rotatably attached to the face of the bit body; wherein, in a rotated view of the plurality of cutting structures into a single plane, there is substantially no radial overlap between at least one fixed cutting structure and the at least one cutting body. 1. A drill bit , comprising:a bit body rotatable about a longitudinal axis and having, at one end, a connection for securing the drill bit to a drill string and having a face opposite the connection end; and at least one fixed cutting structure disposed on the bit body face; and', 'at least one cutting body rotatably attached to the face of the bit body;, 'a plurality of cutting structures comprisingwherein, in a rotated view of the plurality of cutting structures into a single plane, there is substantially no radial overlap between at least one fixed cutting structure and the at least one cutting body.2. The drill bit of claim 1 , wherein the at least one fixed cutting structure comprises at least one blade extending azimuthally from the bit body claim 1 , the at least one blade having a plurality of cutters thereon.3. The drill bit of claim 1 , wherein the at least one fixed cutting structure comprises a raised body extending from the face claim 1 , the raised body having a plurality of blades extending azimuthally therefrom claim 1 , the plurality of blades having a plurality of cutters thereon.4. The drill bit of claim 1 , wherein the at least one fixed cutting structure comprises a cutting element inserted into an insert hole formed in the bit body.5. The drill bit of claim 1 , wherein the plurality of cutting structures comprise a plurality of the cutting bodies claim 1 , ...

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Номер записи: 11
23-05-2013 дата публикации

BALL AND SOCKET ROLLER REAMER AND KEYSEAT WIPER

Номер: US20130126244A1
Автор: Hansen Sheldon
Принадлежит:

Exemplary drill tools for placement in a drill string may include a body; a plurality of reamer cutters; and a plurality of ball and socket connectors configured to attach the plurality of reamer cutters to the body. Each of the plurality of reamer cutters may be replaceable by removing at least one of the plurality of ball and socket connectors from the reamer body. Each of the ball and socket connectors may be attached to the reamer body with bolts. Each of the ball and socket connectors may include titanium dioxide and/or titanium carbide coatings where the connectors interface with the reamer cutters. 1. A tool for placement in a drill string , the tool comprising:a body;a plurality of reamer cutters; anda plurality of ball and socket connectors configured to attach the plurality of reamer cutters to the body, wherein the plurality of ball and socket connectors are configured to permit rotation of each of the plurality of reamer cutters.2. The tool of claim 1 , wherein each of the plurality of reamer cutters is replaceable by removing at least one of the plurality of ball and socket connectors from the body.3. The tool of claim 1 , wherein each of the ball and socket connectors is attached to the body with removable bolts.4. The tool of claim 1 , wherein at least one of the ball and socket connectors is lubricated with drilling fluid.5. The tool of claim 1 , wherein each of the plurality of reamer cutters comprises a socket formed therein claim 1 , the socket cooperatively operating with one of the plurality of ball and socket connectors.6. The tool of claim 1 , wherein each of the plurality of reamer cutters comprises a plurality of cutting inserts.7. The tool of claim 1 , wherein each of the plurality of ball and socket connectors comprises a coating of titanium dioxide or titanium carbide.8. The tool of claim 1 , wherein each of the plurality of ball and socket connectors comprises a ball end and a socket connector claim 1 , wherein the ball end is releasably ...

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Номер записи: 12
30-05-2013 дата публикации

ROLLER REAMER COMPOUND WEDGE RETENTION

Номер: US20130133954A1
Автор: LEUNG KEN YIK KAN, Mohon Brian, Saheta Vishal, VERCHER MICHAEL D.
Принадлежит: Smith International, Inc.

A roller reamer includes a roller assembly deployed in a corresponding axial recess in a tool body. The roller assembly is retained in the axial recess via compound wedging action provided by at least one retention assembly. One or more embodiments utilize first and second retention assemblies located at first and second axially opposed end portions of the roller assembly. The retention assembly includes first and second wedges, the first of which converts a substantially radially directed force to an axially directed force and the second of which converts the axially directed force to a cross-axially directed retention force that retains the roller assembly in the axial recess. 1. A roller reamer comprising:a tool body including an axial recess having an angled interior face;a roller assembly deployed in the axial recess, the roller assembly including a roller shell deployed substantially coaxially about a bearing pin, the roller shell being arranged and designed to rotate with respect to the bearing pin about a common axis;a retention block supporting an axial end portion of the bearing pin, the retention block including an angled flank arranged and designed to engage the angled interior face of the axial recess, the retention block further including a back angled axial face on a side opposing the bearing pin; anda wedge block deployed between the retention block and an end wall of the axial recess, the wedge block including a forward angled axial face configured to engage the back angled axial face of the retention block.2. The roller reamer of claim 1 , wherein the angled flank of the retention block is angled with respect to a longitudinal axis of the roller assembly by about 10 degrees to about 30 degrees.3. The roller reamer of claim 1 , wherein the back angled axial face of the retention block is angled with respect to a radial direction by about 2 degrees to about 6 degrees.4. The roller reamer of claim 1 , wherein:engagement of the forward angled axial ...

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Номер записи: 13
30-05-2013 дата публикации

Drill bit with seal having spheres in a matrix seal material

Номер: US20130133955A1
Автор: David P. Duckworth, Ping C. Sui
Принадлежит: Halliburton Energy Services Inc

A drill bit can include a seal which seals against a drill bit surface, the seal including a matrix seal material and a plurality of hollow spheres in the matrix seal material. Another drill bit can include a seal with a matrix seal material, spheres being more dense in a portion of the matrix seal material as compared to in the matrix seal material outside of the portion, and the portion of the matrix seal material being in dynamic sealing contact with a drill bit surface during operation. A drill bit can include a seal between a cone and a journal, the seal comprising a matrix seal material and a plurality of spheres in the matrix seal material, the matrix seal material comprising nitrile.

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Номер записи: 14
20-06-2013 дата публикации

Fixed cutter drill bit heel and back-ream cutter protections for abrasive applications

Номер: US20130153306A1
Автор: Bobby L. Allen, Carl M. Hoffmaster, Gregory Lockwood, Matthew O'lain, Ronda S. Shepherd, Yuri Burhan
Принадлежит: Smith International Inc

A method of manufacturing a fixed cutter drill bit may include loading a first matrix material of controlled thickness to at least a portion of a mold cavity corresponding to a heel surface of at least one blade; loading a second matrix material into the remaining portions of the mold cavity; heating the mold contents to form a matrix body of the fixed cutter drill bit; and disposing at least one back reaming element in at least one back reaming cutter pocket.

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Номер записи: 15
18-07-2013 дата публикации

Wellbore Conditioning System

Номер: US20130180779A1
Автор: Isenhour James D., Meier Gilbert T.
Принадлежит:

A wellbore conditioning system is disclosed. The system comprises at least one shaft and at least two eccentric unilateral reamers, wherein the unilateral reamers are positioned at a predetermined distance from each other and the unilateral reamers are positioned at a predetermined rotational angle from each other. 1. A wellbore conditioning system , comprising:at least one shaft; andat least two unilateral reamers extending from the at least one shaft, wherein the unilateral reamers are positioned at a predetermined distance from each other and the unilateral reamers are positioned at a predetermined rotational angle from each other.2. The wellbore conditioning system of claim 1 , wherein each unilateral reamer extends from an outer surface of the at least one shaft in a direction perpendicular to the axis of rotation of the at least one shaft.3. The wellbore conditioning system of claim 1 , wherein each reamer is comprised of a plurality of blades claim 1 , wherein each blade has a larger radius than a previous blade in the direction of counter rotation.4. The wellbore conditioning system of claim 3 , further comprising a plurality of cutters coupled to each blade.5. The wellbore conditioning system of claim 4 , wherein each cutter is a Polycrystalline Diamond Compact (PDC) cutter.6. The wellbore conditioning system of claim 3 , further comprising at least one dome slider coupled to each blade.7. The wellbore conditioning system of claim 6 , wherein each dome slider is a PDC dome slider.8. The wellbore conditioning system of claim 1 , further comprising a recess in the at least one shaft adjacent to each reamer.9. The wellbore conditioning system of claim 1 , wherein the at least one shaft and reamers are made from a single piece of material.10. The wellbore conditioning system of claim 1 , wherein there is a plurality of shafts and each shaft comprises one reamer.11. A wellbore drilling string claim 1 , comprising:a drill bit;a downhole mud motor;a measurement- ...

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Номер записи: 16
18-07-2013 дата публикации

Turbine Driven Reaming Bit with Stability and Cutting Efficiency Features

Номер: US20130180783A1
Автор: Anthony Phillips, Maurilio V. SOLANO, Rudolf C. Pessier, Silvino M. ERSAN, Thorsten Schwefe
Принадлежит: Baker Hughes Inc

A reaming bit designed to operate with low torque fluctuation when driven with a turbine at speeds in the order of 300-600 RPM and above features a profile that is arcuate from the gauge dimension to the nose area or alternatively has a blunt straight taper section but with a ratio of profile length (PL) to bit size (BS) of under 0.75. The blades extend into a concave cone and the cutting structure continues along the blades towards the center. The blades have a step near the gauge section to increase the exposure of the blade cutting structure. An array of protrusions are disposed parallel to and behind the cutting structure to increase high speed stability and adjacent the blade step transition to protect outer casing on run in.

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Номер записи: 17
01-08-2013 дата публикации

Downhole Tool Activation

Номер: US20130192897A1
Автор: MacKenzie Alan, Shaw Matthew
Принадлежит: NOV Downhole Eurasia Limited

An apparatus for use in controlling first and second downhole tools includes a first cyclical indexing mechanism associated with a first downhole tool, and a second cyclical indexing mechanism associated with a second downhole tool, wherein the first indexing mechanism defines at least three sequential indexing positions within a cycle and the second indexing mechanism defines at least two sequential indexing positions within a cycle. The apparatus includes at least one actuator for actuating the first and second indexing mechanisms in response to a common stimulus to cause said first and second indexing mechanisms to advance between respective indexing positions so as to permit co-ordination of the operational states of the associated first and second downhole tools. The apparatus may be used for controlling first and second under reamers or for controlling an under reamer and a corresponding stabilizer. 1. An apparatus for use in controlling first and second downhole tools , comprising:a first cyclical indexing mechanism associated with a first downhole tool, said first indexing mechanism defining at least three sequential indexing positions within a cycle, wherein each indexing position corresponds to an operational state of the first downhole tool;a second cyclical indexing mechanism associated with a second downhole tool, said second indexing mechanism defining at least two sequential indexing positions within a cycle, wherein each indexing position corresponds to an operational state of the second downhole tool; andat least one actuator for actuating the first and second indexing mechanisms in response to a common stimulus to cause said first and second indexing mechanisms to advance between respective indexing positions so as to permit co-ordination of the operational states of the associated first and second downhole tools.2. The apparatus of claim 1 , wherein the second indexing mechanism defines at least three sequential indexing positions within the cycle ...

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Номер записи: 18
01-08-2013 дата публикации

TEXTURING OF THE BEARING SURFACE FOR A ROLLER CONE ROCK BIT

Номер: US20130192900A1
Автор: Lu Xiaobin
Принадлежит: Varel International Ind., L.P.

Surface texturing is employed to modify the topography of one or more surfaces (radial or cylindrical) of the bearing system for a roller cone rock bit. The surface texturing results in a dimpled surface which retains additional lubricant helpful in reducing friction in the boundary and mixed lubrication regimes. Shot peening is disclosed as one method for texturing the desired surface. 1. A roller cone drill bit , comprising:a journal bearing structure having a bearing system including a bearing surface;at least a portion of the bearing surface having a surface texture, wherein the surface texture is formed by shot peening in a two-step process including a first shot peening action wherein the portion of the bearing surface is bombarded at a first intensity level by first small spherical media of a first average size and a subsequent second shot peening action wherein the same portion of the bearing surface is bombarded at a second intensity level by second small spherical media of a second average size, the first and subsequent second shot peening actions creating lubricant reservoirs on the same portion of the bearing surface, the lubricant reservoirs being adapted to contain lubricant for the bearing system; andwherein the first intensity level is greater than the second intensity level and the first average size is larger than the second average size.2. The roller cone drill bit of wherein the bearing surface is a thrust surface.3. The roller cone drill bit of wherein the thrust surface is of a radial kind4. The roller cone drill bit of wherein the bearing surface is a journal surface.5. The roller cone drill bit of wherein the journal surface is of a cylindrical kind6. The roller cone drill bit of wherein the journal bearing structure includes a bushing and the portion of the bearing surface is one of an inside or outside surface of the bushing.7. The roller cone drill bit of wherein the journal bearing structure includes a shaft and the bearing surface is an ...

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Номер записи: 19
08-08-2013 дата публикации

WEAR PART

Номер: US20130199693A1
Автор: Tank Klaus, Van Staden Louise Frances, Wai Siu-Wah
Принадлежит:

A tool component comprising a wear part covered at least in part by a connection member, the wear part having a specified hardness and the connection member being a metal or alloy, and the wear part comprising a surface that includes one or more depressions or projections therefrom, and the connection member having been pressed against that surface so that at least the surface of the connection member that faces the wear part surface follows the profile of the wear part, whereby relative movement between the wear part and connection member is substantially prevented. The metal or alloy connection member may be readily attached to a tool body for example by brazing of the like. The wear part may comprise a material that is not readily brazeable, for example a ceramic material or a cermet or a superhard material or a composite of such materials. 135.-. (canceled)36. A tool component comprising a wear part that is covered at least in part by a connection member , the wear part having a hardness of at least 15 GPa and comprising a ceramic material , a cermet material , or a superhard material or a composite of a ceramic and a superhard material , or a cermet and a superhard material , and the connection member comprises a metal or alloy , having a hardness less than 15 GPa , the connection member providing a layer over at least part of the wear part , the ratio of the thickness of the connection member to the thickness of the wear part underlying it measured at any point being at most 1:10 , the wear part comprising a surface that includes one or more depressions therein and/or projections therefrom , and at least part of the connection member having been pressed against at least part of the surface of the wear part that includes the depressions or projections , such that a surface of the connection member that faces a surface of the wear part follows the profile of the said part of the surface of the wear part against which it has been pressed , whereby the surfaces of ...

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Номер записи: 20
08-08-2013 дата публикации

Keyseat Wiper

Номер: US20130199858A1
Автор: Hansen Sheldon
Принадлежит:

Embodiments of keyseat wipers for use in drilling processes, as well as methods for making and using such keyseat wipers, are described herein. Embodiments of keyseat wipers can include changing cross-sections and a relief sections that permit cut materials to pass by the keyseat wipers, reducing the possibility of a drill string with keyseat wipers from binding in a curved hole when being retrieved. 1. A keyseat wiper for placement in a drill string , the keyseat wiper comprising:a first tapered section tapering from a first diameter to a second larger diameter;a wiper section having the second larger diameter;a second tapered section tapering from the second larger diameter to the first diameter; anda reduced section in the wiper section, the reduced section having a diameter smaller than the second larger diameter.2. The keyseat wiper of claim 1 , wherein the first tapered section and the second tapered section each include flutes claim 1 , the flutes of the first tapered section being rotationally offset from the flutes of the second tapered section.3. The keyseat wiper of claim 1 , further comprising at least one outside reduced section located adjacent to the first diameter of the first tapered section. This application claims the benefit of U.S. Provisional Patent Application No. 61/562,272 filed on Nov. 21, 2011, entitled KEYSEAT WIPER, which is incorporated herein by reference in its entirety.This application relates generally to tools for drill strings and methods of making and using such tools. In particular, this application relates to keyseat wipers for use with drill rods that are used in exploratory and production drilling, as well as methods for making and using such keyseat wipers.In a conventional process used in drilling, an open-faced drill bit is attached to a drill string, which is a series of connectedIn a conventional process used in drilling, an open-faced drill bit is attached to a drill string, which is a series of connected drill rods and ...

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Номер записи: 21
22-08-2013 дата публикации

STEPPED DRILL BIT ASSEMBLY

Номер: US20130213717A1
Автор: Bise Douglas E.
Принадлежит: KENNAMETAL INC.

A wet drill bit assembly and a dry drill bit assembly for cutting a borehole in the earth strata of a mine wherein the borehole has a reduced dimension interior region and an enlarged dimension exterior region. The wet drill bit assembly includes an axial forward spade-style cutting member, which has a spade hard cutting member with a first transverse cutting dimension, and an axially spaced apart axial rearward reamer cutting member, which has a hard insert with a second transverse cutting dimension, which is greater than the first transverse cutting dimension. The dry drill bit assembly includes an axial forward cutting member, which has an axial forward hard cutting insert with a first transverse cutting dimension, and an axially spaced apart axial rearward hard cutting insert that has a second transverse cutting dimension which is greater than the first transverse cutting dimension. An elongate sleeve is adapted to receive cutting debris from the operation of the axial forward hard cutting insert. 1. A wet drill bit assembly for cutting a borehole in the earth strata of a mine wherein the borehole has an interior region with a reduced transverse dimension and an exterior region with an enlarged transverse dimension , the drill bit assembly comprising:an axial forward spade-style cutting member having a spade hard cutting member with a first transverse cutting dimension;an axial rearward reamer cutting member having a hard insert with a second transverse cutting dimension;the axial forward spade-style cutting member being axial spaced apart from the axial rearward reamer cutting member; andthe first transverse cutting dimension being less than the second transverse cutting dimension.2. The wet drill bit assembly according to further comprising an upper section of tubing having an axial forward end and an axial rearward end claim 1 , and the axial rearward reamer cutting member having a central axial bore with an reduced diameter section claim 1 , and a section of ...

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Номер записи: 22
26-09-2013 дата публикации

UNDERGROUND REAMER

Номер: US20130248254A1
Автор: Ainge Stephen
Принадлежит: HARD METALS AUSTRALIA PTY LIMITED

A reamer for underground passageways made, for instance, for the installation of cables or pipelines to distribute services in a reticulated network. It includes a support housing having plural integral pairs of spaced-apart laterally extending support wings, wherein between each pair of support wing there is a longitudinally extending slot to receive a laterally extending cutting wing such that each cutting wing is captured between a respective pair of support wings. A stabilization ring comprising a circular sleeve supported by plural radial support pillars which extend from a central collar. Wherein, the cutting wings engage with the support housing to resist rearward longitudinal movement, with the support wings to resist torsional forces, and with the circular sleeve of the stabilization ring to resist radial movement. 1. A reamer for underground passageways , comprising:a support housing having plural integral pairs of spaced-apart laterally extending support wings, wherein between each pair of support wing there is a longitudinally extending slot to receive a laterally extending cutting wing such that each cutting wing is captured between a respective pair of support wings;a stabilization ring comprising a circular sleeve supported by plural radial support pillars which extend from a central collar;wherein, the cutting wings engage with the support housing to resist rearward longitudinal movement, with the support wings to resist torsional forces, and with the circular sleeve of the stabilization ring to resist radial movement.2. A reamer according to claim 1 , wherein the cutting wings engage with the other components releasably to enable the wings to be replaceable in the field without the need to return the reamer to the workshop.3. A reamer according to claim 1 , wherein in addition claim 1 , the cutting wings engage with respective support pillars of the stabilization ring to resist relative rotation between them.4. A reamer according to claim 1 , ...

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Номер записи: 23
03-10-2013 дата публикации

CUTTING STRUCTURES, TOOLS FOR USE IN SUBTERRANEAN BOREHOLES INCLUDING CUTTING STRUCTURES AND RELATED METHODS

Номер: US20130256036A1
Автор: Lyons Nicholas J.
Принадлежит: BAKER HUGHES INCORPORATED

Cutting structures for use with downhole tools in subterranean boreholes include a blade, a plurality of primary cutting elements coupled to the blade, and at least one secondary element rotationally leading the plurality of primary cutting elements in a direction of intended rotation of the cutting structure. The at least one secondary element is coupled to the blade proximate a leading surface of the blade and comprises at least one of a rubbing surface and a cutting surface. An exposure of at least one primary cutting element of the plurality of primary cutting elements is greater than an exposure of the at least one secondary element. Downhole tools such as reamers include cutting structures. Methods of enlarging a subterranean borehole include reaming a borehole with cutting structures. 1. A cutting structure for use with a downhole tool in a subterranean borehole , comprising:a blade;a plurality of primary cutting elements coupled to the blade; andat least one secondary element rotationally leading the plurality of primary cutting elements in a direction of intended rotation of the cutting structure, the at least one secondary element coupled to the blade proximate a leading surface of the blade and comprising at least one of a rubbing surface and a cutting surface, wherein an exposure of at least one primary cutting element of the plurality of primary cutting elements is greater than an exposure of the at least one secondary element.2. The cutting structure of claim 1 , wherein the plurality of primary cutting elements extend along the blade in direction substantially parallel to a centerline of the blade.3. The cutting structure of claim 2 , wherein each of the plurality of primary cutting elements is positioned proximate to the centerline of the blade.4. The cutting structure of claim 3 , wherein each of the plurality of primary cutting elements is positioned at the centerline of the blade.5. The cutting structure of claim 3 , wherein each of the plurality ...

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Номер записи: 24
28-11-2013 дата публикации

Hybrid Drill Bits Having Increased Drilling Efficiency

Номер: US20130313021A1
Автор: Anton F. Zahradnik, Chaitanya K Vempati, Don Q. Nguyen, Gregory C. Prevost, John F. Bradford, Johnathan Howard, Karlos Cepeda, Michael S. Damschen, Mitchell A. Rothe, Robert J. Buske, Rudolf C. Pessier
Принадлежит: Baker Hughes Inc

An earth boring drill bit is described, the bit having a bit body having a central longitudinal axis that defines an axial center of the bit body and configured at its upper extent for connection into a drillstring; at least one primary fixed blade extending downwardly from the bit body and inwardly toward, but not proximate to, the central axis of the drill bit; at least one secondary fixed blade extending radially outward from proximate the central axis of the drill bit; a plurality of fixed cutting elements secured to the primary and secondary fixed blades; at least one bit leg secured to the bit body; and a rolling cutter mounted for rotation on the bit leg; wherein the fixed cutting elements on at least one fixed blade extend from the center of the bit outward toward the gage of the bit but do not include a gage cutting region, and wherein at least one roller cone cutter portion extends from substantially the drill bit's gage region inwardly toward the center of the bit, the apex of the roller cone cutter being proximate to the terminal end of the at least one secondary fixed blade, but does not extend to the is center of the bit.

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Номер записи: 25
05-12-2013 дата публикации

DRILL BIT SEAL AND METHOD OF USING SAME

Номер: US20130319770A1
Автор: Burr Bruce H.
Принадлежит: NATIONAL OILWELL VARCO, L.P.

A seal for a rolling cutter drill bit is provided. The seal has a ring shaped seal body having an inside diameter and an outside diameter, and a mud lobe and a grease lobe extending from the inside diameter of the seal body. The seal body has an asymmetrical, longitudinal cross-section such that, when positioned in a seal groove of the drill bit and compressed therein under downhole pressure, the mud lobe and grease lobe are maintained in contact with a seal land of the seal groove. The seal body may be provided with a garter spring and/or a textured pattern. 1. A seal of a rolling cutter drill bit , the drill bit having a bearing spindle and a rolling cutter with a seal groove therebetween , the drill bit advanceable into the earth by a downhole tool , the seal comprising:a ring shaped seal body having an inside diameter and an outside diameter, a mud lobe and a grease lobe extending from the inside diameter of the seal body, the seal body having an asymmetrical longitudinal cross-section such that, when positioned in the seal groove of the drill bit and compressed therein under downhole pressure, the mud lobe and grease lobe are maintained in contact with a seal land of the seal groove.2. The seal of claim 1 , wherein the seal body has a mud cavity extending into a mud side of the seal body and defining a mud area therein and a grease cavity extending into a grease side of the seal body and defining a grease area therein.3. The seal of claim 2 , wherein the mud area is greater than the grease area.4. The seal of claim 2 , wherein a seal ratio of the mud area to the grease area is greater than 2.5.5. The seal of claim 4 , wherein the seal ratio is greater than 2.67.6. The seal of claim 2 , wherein the mud cavity and the grease cavity are one of concave claim 2 , polygonal or combinations thereof.7. The seal of claim 1 , wherein the mud lobe has a pointed tip.8. The seal of claim 1 , wherein a mud gap is provided between the mud lobe and a mud wall of the groove.9. ...

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Номер записи: 26
06-02-2014 дата публикации

BALL HOLE WELDING USING THE FRICTION STIR WELDING (FSW) PROCESS

Номер: US20140034394A1
Автор: Keshavan Madapusi K., Packer Scott M., Roth Cary A., Steel Russell J.
Принадлежит: Smith International, Inc.

A roller cone drill bit includes a bit body, at least one leg extending downward from the bit body, a journal on each leg, and a roller cone mounted on each journal. A ball race is configured between each journal and roller cone, and a plurality of retention balls is disposed within each ball race. A ball hole extends from the back face of each leg to the ball race, and a ball hole plug fits within the ball hole. The ball hole plug is secured to the leg by a friction stir weld. 1. A roller cone drill bit , comprising:a bit body;at least one leg extending downward from the bit body, wherein each leg comprises a leg back face and a journal and each journal has a journal race surface;a roller cone mounted on each journal, wherein each roller cone has a roller cone race surface;a ball race configured between the journal race surface and the roller cone race surface;a plurality of retention balls disposed within the ball race;a ball hole extending from the leg back face to the journal race surface; anda ball hole plug, wherein the ball hole plug is secured to the leg by a friction stir weld.2. The roller cone drill bit of claim 1 , wherein the ball hole plug is welded directly to the leg back face without a filler material.3. The roller cone drill bit of claim 1 , wherein the ball hole plug material is the same as the leg material.4. The roller cone drill bit of claim 1 , wherein the ball hole plug comprises a material selected from at least one of austenitic stainless steel claim 1 , high alloy carbon steel claim 1 , and nickel and cobalt based alloys.5. The roller cone drill bit of claim 3 , wherein the high alloy materials are nickel based materials.6. The roller cone drill bit of claim 1 , wherein the ball hole plug comprises the same material as the leg.7. The roller cone drill bit of claim 1 , wherein the ball hole plug comprises a different material from the leg.8. The roller cone drill bit of claim 7 , wherein the ball hole plug comprises material with a higher ...

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Номер записи: 27
06-03-2014 дата публикации

Downhole elastomeric components including barrier coatings

Номер: US20140060811A1
Автор: Kristine N. Ludwig, Oleg A. Mazyar, Rocco DiFoggio, Valery N. Khabashesku
Принадлежит: Baker Hughes Inc

An apparatus for performing a downhole operation includes: a carrier configured to be disposed in a borehole in an earth formation; and a deformable component configured to be disposed in the borehole, the deformable component including an elastomeric material and a barrier coating disposed on a surface of the elastomeric material, the barrier coating having properties configured to resist permeation of downhole gases into the elastomeric material at downhole temperatures.

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Номер записи: 28
07-01-2016 дата публикации

DIGGING BIT

Номер: US20160002979A1
Автор: NAKAMURA Kazuyoshi, Ota Hiroshi
Принадлежит: MITSUBISHI MATERIALS CORPORATION

A digging bit includes a reaming portion whose diameter is larger than a rear end portion of a bit body, and which is formed in a front end portion of the bit body rotated around an axis, a digging tip which is arranged in a front end portion of the reaming portion, a debris groove which extends in a direction of an axis, and which is formed in an outer peripheral portion of the reaming portion, and a communication groove which communicates with the debris groove, and which is formed from the outer peripheral portion to a rear end portion of the reaming portion. 1. A digging bit for forming a borehole in rocks , comprising:a reaming portion whose diameter is larger than a rear end portion of a bit body, and which is formed in a front end portion of the bit body rotated around an axis;a digging tip which is arranged in a front end portion of the reaming portion;a debris groove which extends in the axial direction, and which is formed in an outer peripheral portion of the reaming portion; anda communication groove which communicates with the debris groove, and which is formed from the outer peripheral portion to a rear end portion of the reaming portion.2. The digging bit according to claim 1 ,wherein an intersecting ridgeline located on a rear side in a rotating direction of the bit body at least during digging, within the intersecting ridgelines between the communication groove and a rear end surface of the reaming portion is located on a plane parallel to the axis or on a plane including the axis.3. The digging bit according to claim 2 ,wherein a width of the communication groove is larger than a width of the debris groove in a circumferential direction of the bit body.4. The digging bit according to claim 3 ,wherein the debris grooves are formed in an outer peripheral portion of the reaming portion at intervals in the circumferential direction, and the communication groove communicates with the multiple debris grooves which are adjacent to each other in the ...

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Номер записи: 29
04-01-2018 дата публикации

Bi-directional drilling systems and methods

Номер: US20180002985A1
Автор: Adam Ian Bowler, Geoffrey Charles Downton, Siamak Dadkhah
Принадлежит: Schlumberger Technology Corp

A method for removing material with a bit includes rotating a bit in a first direction, changing the rotational direction and rotating the bit in an opposing second direction. Rotation of the bit in the first direction and rotation of the bit in the second direction both remove material.

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Номер записи: 30
02-01-2020 дата публикации

DOWNHOLE TOOLS WITH LOW DILUTION ZONE BEARING CLADDING AND CLADDING PROCESSES

Номер: US20200003012A1
Автор: Bird Jay Stuart
Принадлежит:

The present disclosure relates to downhole tools containing bearings with cladding on their surfaces. The cladding contains a low dilution zone. In specific embodiments, the downhole tools may be roller cone drill bits, also sometimes referred to as rotary cone drill bits. The present disclosure further relates to processes for applying cladding to bearings. 1. The method of claim 19 , wherein the cladding comprises a low dilution zone including 5% by proportion of atoms or less of a substrate metal. of atoms or less of a substrate metal.2. The method of claim 19 , wherein the substrate is located on a portion of a roller cone assembly that makes contact with a spindle or journal.3. The method of claim 19 , wherein the substrate is disposed on part of a spindle or journal of a support arm.4. The method of claim 1 , wherein the substrate metal is iron.5. The method of claim 19 , wherein the cladding comprises a Group VIII metal and an alloying element.6. The method of claim 5 , wherein the Group VII metal is selected from the group consisting of cobalt (Co) claim 5 , nickel (Ni) claim 5 , or iron (Fe) claim 5 , and any combinations thereof claim 5 , and wherein the alloying element is selected from the group consisting of carbon (C) claim 5 , tungsten (W) claim 5 , molybdenum (Mo) claim 5 , chromium (Cr) claim 5 , tantalum (Ta) claim 5 , titanium (Ti) claim 5 , vanadium (V) claim 5 , niobium (Nb) claim 5 , boron (B) claim 5 , and any combinations thereof.7. The method of claim 5 , wherein the alloying element is present as a carbide.8. The method of claim 20 , wherein the cladding comprises layers.9. The method of claim 19 , wherein the cladding is between 0.010 inches and 0.040 inches thick.10. The method of claim 1 , wherein the low dilution zone is between 0.0005 inches and 0.010 inches thick.1118-. (canceled)19. A method of applying a cladding to a substrate claim 1 , the method comprising:applying a cladding slurry to the substrate; andplacing the cladding ...

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Номер записи: 31
03-01-2019 дата публикации

HYBRID DRILL BIT WITH AXIALLY ADJUSTABLE COUNTER-ROTATION CUTTERS IN CENTER

Номер: US20190003259A1
Автор: Grosz Gregory Christopher
Принадлежит:

A hybrid drill bit includes both fixed cutting elements and an adjustable cutting structure thereon. An adjustment mechanism is provided to allow an axial position of cutting elements at a leading end of the adjustable cutting structure to be adjusted with respect to an axial position of the fixed cutting elements. The adjustable cutting structure may include counter rotational cutting members mounted obliquely with respect to a bit body rotational axis, and the adjustment mechanism may dynamically support the adjustable cutting structure such that the axial position of the cutting elements may be adjusted as the drill bit is in operation within a wellbore. The axial position may be adjusted by altering a weight applied to the drill bit within the wellbore. 1. A drill bit for forming a wellbore through a geologic formation , the drill bit comprising:a connector configured for connection to a drillstring,a bit body coupled to the connector and defining a bit body rotational axis extending longitudinally therethrough;an adjustable cutting structure mounted on the bit body, the adjustable cutting structure including at least one cutting element protruding from a leading end of the bit body for penetrating the geologic formation; andan adjustment mechanism coupled between the bit body and the adjustable Cutting structure for supporting the adjustable cutting structure at a plurality of axial positions with respect to the bit body.2. The drill bit of claim 1 , wherein the adjustment mechanism further comprises:at least one flexible spacer member disposed between the adjustable cutting structure and the bit body to dynamically support the adjustable cutting structure.3. The drill bit of claim 2 , wherein the at least one flexible spacer member includes a spring under a spring preload force between the adjustable cutting structure and the and the bit body to prevent axial movement of the adjustable cutting structure at axial forces below a threshold related to the spring ...

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Номер записи: 32
05-01-2017 дата публикации

MODEL FOR ESTIMATING DRILLING TOOL WEAR

Номер: US20170004235A1
Автор: Li Dong, Liu Zhengchun, Marland Chris Neil, Samuel Robello
Принадлежит:

A method for estimating the wear of a drilling tool is disclosed. The method includes selecting a first incremental distance along a length of a formation. The method further includes determining a first characteristic of the formation along the first incremental distance. The method further includes deriving a first fractional wear factor, y, for the drilling tool based on the first characteristic of the formation and a first operating condition of the cutting element. The method further includes calculating a first wear function, W, the cutting element based on the first fractional wear factor and estimating an amount of wear of the cutting element during a drilling operation based on the first wear function. 1. A method for estimating wear of a cutting element on a drilling tool , the method comprising:selecting a first incremental distance along a length of a formation;determining a first characteristic of the formation along the first incremental distance;{'sub': '1', 'deriving a first fractional wear factor, y, for a cutting element on a drilling tool based on the first characteristic of the formation and a first operating condition of the cutting element;'}{'sub': 'f1', 'calculating a first wear function, W, of the cutting element based on the first fractional wear factor; and'}estimating an amount of wear of the cutting element during a drilling operation based on the first wear function.2. The method of claim 1 , further comprising:selecting a second incremental distance along the length of the formation;determining a second characteristic of the formation along the second incremental distance;{'sub': '2', 'deriving a second fractional wear factor, y, for the cutting element based on the second characteristic of the formation and a second operating condition of the cutting element;'}{'sub': 'f2', 'calculating a second wear function, W, of the cutting element based on the second fractional wear factor; and'}estimating the amount of wear of the cutting ...

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Номер записи: 33
14-01-2016 дата публикации

HIGH-TEMPERATURE LUBRICANTS COMPRISING ELONGATED CARBON NANOPARTICLES FOR USE IN SUBTERRANEAN FORMATION OPERATIONS

Номер: US20160010022A1
Автор: Duckworth David, Sui Ping
Принадлежит: Halliburton Energy Services, Inc.

An embodiment disclosed herein provides a high-temperature lubricant comprising an oil-soluble lubricating base fluid or a water-soluble lubricating base fluid; and elongated carbon nanoparticles that align in flow. In some embodiments, the lubricating composition may be selected from the group consisting of graphene nanoribbons; carbon nanotubes; carbon nanohorns; and any combination thereof. 1. A drill bit comprising: 'wherein the sealed segment comprises a high-temperature lubricant comprising an oil-soluble lubricating base fluid or a water-soluble lubricating base fluid and elongated carbon nanoparticles that align in flow in response to frictional forces in the oil-soluble lubricating base fluid or the water-soluble lubricating base fluid.', 'a rotary joint defining a sealed segment and an unsealed segment,'}2. The drill bit of claim 1 , wherein the oil-soluble lubricating base fluid has a decomposition temperature of greater than about 200° C.3. The drill bit of claim 1 , wherein the water-soluble lubricating base fluid has a decomposition temperature of greater than about 120° C.4. The drill bit of claim 1 , wherein the elongated carbon nanoparticles are selected from the group consisting of graphene nanoribbons; carbon nanotubes; carbon nanohorns; and any combination thereof.5. The drill bit of claim 4 , wherein the graphene nanoribbons are in the range of from about 5 nm to about 50 nm in width and in the range of from about 100 nm to about 2 μm in length.6. The drill bit of claim 5 , wherein the elongated carbon nanoparticles are functionalized so as to at least partially solubilize the elongated carbon nanoparticles into the oil-soluble lubricating base fluid or the water-soluble lubricating base fluid.7. The drill bit of claim 6 , wherein the elongated carbon nanoparticles are functionalized with a water-solubilizing group; an oil-solubilizing group; and any combination thereof.8. The drill bit of claim 7 , wherein the water-solubilizing group is ...

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Номер записи: 34
09-01-2020 дата публикации

BI-MILL FOR MILLING AN OPENING THROUGH A WELLBORE CASING AND IN A PREPLANNED LATERAL DRILLING PATH IN DEPARTURE FROM THE WELLBORE AXIS

Номер: US20200011134A1
Автор: CRABB JOHN LLOYD, Dewey Charles, Garza Antonio, NEVLUD KENNETH
Принадлежит:

A bi-mill mills an opening through a wellbore casing in a preplanned lateral drilling path in departure from the wellbore axis and through the wellbore casing or rock formation and in the direction of the drilling path. The bi-mill provides increase debris removal and cutting surfaces and includes an assembly having a lead mill and a follow mill and attaches to the wellbore whipstock. The lead mill further includes fluid passageways leading from the lead mill and exiting the nose of the lead mill. Debris removal channels channel milled debris away from the lead mill and in the direction of the follow mill form in a helical configuration for guiding debris milled by lead mill inserts along the debris removal channels. The lead mill and follow mill continue milling through the wellbore casing and into the underground rock formation a distance sufficient to initiate the preplanned drilling path. 1. A bi-mill for milling an opening through a wellbore casing in initiating a preplanned lateral drilling path in departure from the wellbore axis and through the wellbore casing or wellbore rock formation , and further continuing into underground rock formation outside the wellbore and in the direction of the preplanned lateral drilling path and as guided by a wellbore whipstock , comprising:an assembly comprising a lead mill and a follow mill, said lead mill threadably attached to said follow mill, said lead mill comprising;a body forming a structural base for said lead mill, and further comprising:a smooth bore in the lead mill for receiving a circumferentially-grooved shear bolt, said shear bolt comprising a threaded end threadably attached to the wellbore whipstock and with the unthreaded end inserted into said smooth bore, said lead mill comprising a plurality of fluid passageways wherein said smooth bore comprises a sufficiently shallow depth so as to not intersect with internal fluid passageways and so as to not exit the distal side of said lead mill, said lead mill ...

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Номер записи: 35
21-01-2016 дата публикации

SUPERHARD CONSTRUCTIONS AND METHODS OF MAKING SAME

Номер: US20160016291A1
Автор: Westraadt Johan Ewald
Принадлежит:

A method of forming a super hard PCD construction comprises forming an aggregated mass comprising a catalyst/solvent material for diamond, and one or more of W, Mo, Cr, V, Ti, Zr, Nb, Hf, Ta, Sc, and/or Y, forming a pre-sinter assembly comprising the aggregated mass and a plurality of diamond grains and treating the pre-sinter assembly at UHPT to form a PCD construction. Residual catalyst/solvent and one or more of W, Mo, Cr, V, Ti, Zr, Nb, Hf, Ta, Sc, and/or Y, in non-carbide form at least partially fill a plurality of interstitial regions in the PCD. There is also disclosed a superhard PCD construction comprising a body of PCD material formed of a mass of diamond grains and a non-superhard phase at least partially filling a plurality of interstitial regions, wherein the non-superhard phase comprises one or more of W, Mo, Cr, V, Ti, Zr, Nb, Hf, Ta, Sc, and/or Y, in the non-carbide form.

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Номер записи: 36
21-01-2021 дата публикации

SLIDE REAMER AND STABILIZER TOOL

Номер: US20210017814A1
Автор: Harvey Michael James, Rajic Milan, Vacar Jovan
Принадлежит:

A downhole tool, for selectively reaming a wellbore or stabilizing drill string components within a wellbore, includes an elongate tool body adapted to receive reamer cartridges or stabilizer cartridges depending. The reamer cartridges are radially insertable into corresponding pockets in the tool body, with each reamer cartridge having a reamer insert with an array of cutting elements. The reamer insert is disposed within a bushing and is rotatable relative thereto, about a rotational axis transverse to the longitudinal axis of the tool. However, the rotational axis is offset from the tool body axis, resulting in eccentric contact of the cutting elements with the wall of the wellbore, which in turn imparts rotation to the reamer insert when the tool is moved axially through a wellbore without rotation. When the tool is used for stabilization, the reamer cartridges are removed and replaced with stabilizer cartridges having stabilizer inserts with hard-faced stabilizer cones. 1. A downhole tool comprising a main body having:(a) a longitudinal axis;(b) an outer surface; and(c) a plurality of channels formed into said outer surface, said channels dividing the main body into a plurality of blade sections corresponding in number to the number of channels;wherein each of at least two of the blade sections has one or more cartridge pockets formed into the outer surface thereof, each cartridge pocket being configured to receive a tool cartridge housing a tool insert such that the tool insert is confined to rotate about a rotational axis transverse to, and offset from, the longitudinal axis of the main body.2. The downhole tool of wherein the channels are angularly skewed relative to the longitudinal axis of the main body.3. (canceled)4. The downhole tool of wherein at least one cartridge pocket has a tool cartridge removably retained therein.5. The downhole tool of wherein at least one of the tool inserts is a reamer insert having a plurality of cutting elements.6. The ...

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Номер записи: 37
16-01-2020 дата публикации

SHAFT ENLARGEMENT ARRANGEMENT FOR A BORING SYSTEM

Номер: US20200018163A1
Автор: Germishuys Louis, GOODWIN Nicolaas Bodenstein, JORDAAN Barend Jacobus, Pretorius Daniel Coenraad, Pretorius Gerhard
Принадлежит:

A shaft enlargement arrangement for a boring system is provided, the shaft enlargement arrangement comprising a hollow column proximate a lower end of the boring system. A reamer section comprising a downwardly tapering first cutter head arrangement is rotatably fitted to the hollow column, with first drive means being provided to rotate the first cutter head arrangement relative to the hollow column so as to bore downwardly a hole having a diameter corresponding substantially to the diameter of the first cutter head arrangement. A boring head arrangement is fitted to an operatively lower end, the boring head arrangement terminating in a downwardly tapering second cutter head arrangement to bore a leading or pilot hole, having a diameter that is less than the diameter of the first cutter head arrangement, as the boring system proceeds to bore downwardly. A thrust section is provided to allow the boring head arrangement to advance relative to the reamer section, with a gripper arrangement being used to secure the shaft enlargement arrangement within the bored hole and to control the advancing of the boring head arrangement relative to the reamer section. 1. A shaft enlargement arrangement for a boring system , the shaft enlargement arrangement comprising:a hollow column proximate a lower end of the boring system;a reamer section comprising a downwardly tapering first cutter head arrangement that is rotatably fitted to the hollow column, with first drive means being provided to rotate the first cutter head arrangement relative to the hollow column so as to bore downwardly a hole having a diameter corresponding substantially to the diameter of the first cutter head arrangement;a boring head arrangement fitted to an operatively lower end, the boring head arrangement terminating in a downwardly tapering second cutter head arrangement to bore a leading or pilot hole, having a diameter that is less than the diameter of the first cutter head arrangement, as the boring ...

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Номер записи: 38
22-01-2015 дата публикации

THERMALLY STABLE POLYCRYSTALLINE COMPACTS FOR REDUCED SPALLING EARTH-BORING TOOLS INCLUDING SUCH COMPACTS, AND RELATED METHODS

Номер: US20150021100A1
Автор: Cheng Xiaomin Chris
Принадлежит:

Polycrystalline compacts include an interface between first and second volumes of a body of inter-bonded grains of hard material. The first volume is at least substantially free of interstitial material, and the second volume includes interstitial material in interstitial spaces between surfaces of the inter-bonded grains of hard material. The interface between the first and second volumes is configured, located and oriented such that cracks originating in the compact during use of the compacts and propagating along the interface generally toward a central axis of the compacts will propagate generally toward a back surface and away from a front cutting face of the compacts at an acute angle or angles. Methods of forming polycrystalline compacts involve the formation of such an interface within the compacts. 1. A generally planar polycrystalline compact , comprising:a body of inter-bonded grains of hard material having a first major surface defining a front cutting face of the polycrystalline compact, a second major surface on an opposing back side of the body, at least one lateral side surface extending between the first major surface and the second major surface, and a central axis extending through a center of the body and generally perpendicular to the first major surface and the second major surface, the hard material comprising diamond or cubic boron nitride; andan interstitial material; andwherein a first volume of the polycrystalline compact is at least substantially free of the interstitial material such that voids exist in interstitial spaces between surfaces of the inter-bonded grains of hard material within the first volume, a second volume of the polycrystalline compact includes the interstitial material in interstitial spaces between surfaces of the inter-bonded grains of hard material within the second volume, and an interface between the first volume and the second volume is located and oriented such that at least one crack originating proximate a ...

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Номер записи: 39
25-01-2018 дата публикации

DOWN-THE-HOLE DRILLING DEVICE

Номер: US20180023349A1
Автор: GYLLING Kai
Принадлежит: OY ATLAS COPCO ROTEX AB

A down-the-hole drilling device, being meant for drilling a hole with and a casing part is described. The drilling device comprises in its drilling head: a drilling arrangement, having first drilling means for drilling a center hole and second drilling means for reaming the center hole for the casing part; and a flushing flow arrangement for feeding of a flushing medium onto a drilling surface of the drilling arrangement by one or more feed channels and for discharging the same from the drilling surface together with drilling waste. The casing part is arranged to be pulled into the hole to be drilled by power influence directed thereto from the drilling arrangement. A feed channel of the flushing flow arrangement at least partly ends up on the drilling surface at a flushing channel that exists in the longitudinal direction of the drilling device essentially behind a rearmost part of the drilling surface of at least of the first drilling means. The flushing flow arrangement comprises on the bottom of the flushing channel a supplementary flushing groove that extends from the feed channel towards the outer periphery of the drilling arrangement. 1. Down-the-hole drilling device , being meant for drilling a hole with a casing part , wherein the drilling device comprises in its drilling head : a drilling arrangement , having first drilling means for drilling a center hole and second drilling means for reaming the center hole for the casing part; and a flushing flow arrangement for feeding of a flushing medium onto a drilling surface of the drilling arrangement by one or more feed channels and for discharging the same from the drilling surface together with drilling waste backwards with respect to the drilling direction , wherein the casing part is arranged to be pulled into the hole to be drilled by power influence directed thereto from the drilling arrangement , such as the first and/or the second drilling means , and wherein a feed channel of the flushing flow ...

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Номер записи: 40
29-01-2015 дата публикации

CUTTER FOR SHAFT AND/OR TUNNEL BORING

Номер: US20150028657A1
Автор: Narvestad Stein
Принадлежит:

A cutter is provided for shaft and/or tunnel boring which comprises a divided cutter ring () and a cutter body () with a recess (). The cutter ring () is secured in the recess () by a divided clamping ring (). The clamping ring () is divided into at least two segments () where each segment () has two segment ends, with the result that when the clamping ring () is tightened, a number of pairs of opposite segment ends are formed. Furthermore, in a tightened condition, all the pairs of opposite segment ends are either connected to securing elements (), or, in a tightened condition, at least one pair of opposite segments ends is connected with a hinged device () while the remaining pairs of opposite segment ends are connected to securing elements (). The segments () are tightened in the segments' () circumferential direction. 1. A cutter for shaft and/or tunnel boring , which cutter comprises a cutter body with a recess and at least one divided cutter ring which is secured in the recess by a clamping ring consisting of at least two segments ,wherein the segments' ends, in a tightened condition, are tightened in pairs in the segments' circumferential direction by securing means provided at the end of the segments.2. A cutter according to claim 1 ,wherein all the segments' ends are tightened in pairs by securing elements arranged built into the end of the segments.3. A cutter according to claim 1 ,wherein between all opposite ends of the clamping ring's segments there is a gap for tightening.4. A cutter according to claim 1 ,wherein the securing means comprise at least one hinged device for connecting one end of the segments.5. A cutter according to claim 1 ,wherein the securing element can be moved in a first direction to abut against a shoulder in one clamping ring segment for tightening to the second segment and that the securing element can be moved in the opposite direction to abut against a back stop, with the result that the segments are pushed apart from each ...

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Номер записи: 41
28-01-2021 дата публикации

SELF-PROPELLED DRILLING HEAD

Номер: US20210025234A1
Автор: Rameil Meinolf
Принадлежит:

A self-propelled drilling head for drilling in soil by means of a multi-stage method comprises the drilling head having a housing and a drilling head tip arranged in the housing, and a spacer provided on the drilling head tip, by means of which the drilling head tip is in contact with the housing in order to change the multi-stage method to a method with a reduced number of stages. 19.-. (canceled)10. A self-propelled drilling head for drilling in soil by means of a multi-stage process , comprising:a housing; anda drilling head tip arranged in the housing; anda spacer on the drilling head tip by means of which the drilling head tip is in contact with the housing in order to change the multi-stage method to a method with a reduced number of stages.11. The drilling head according to claim 10 , wherein the spacer abuts against a front area of the housing.12. The drilling head according to claim 10 , wherein the drilling head tip is prestressed by means of the spacer.13. The drilling head according to claim 10 , wherein the spacer comprises an elastic plastic.14. The drilling head according to claim 10 , further comprising an adapter claim 10 , wherein the spacer is arranged between the housing and the adapter.15. The drilling head according to claim 10 , wherein the spacer is arranged in a ring around the drilling head tip.16. The drilling head according to claim 10 , wherein the spacer is formed of a plurality of parts.17. In a self-propelled drilling head designed for drilling in soil according to a multi-stage process claim 10 , the drilling head having a housing and a drilling head tip arranged in the housing claim 10 , a method comprising:using a spacer in the self-propelled drilling head on the drilling head tip, by means of which the drilling head tip is in contact with the housing in order to use the drilling head in a method with a reduced number of stages.18. A method for retrofitting a self-propelled drilling head for drilling in soil according to a multi- ...

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Номер записи: 42
28-01-2021 дата публикации

HOLE OPENER FOR DIRECTIONAL DRILLING

Номер: US20210025242A1
Автор: Graham Cody D., Mueller Jeffrey S.
Принадлежит:

A hole opener configured for use with a directional drilling rig, the hole opener includes a shaft and a plurality of flutes that extend outwardly from the shaft. Each of the flutes includes a first side, a second side opposite the first side, and a top side that extends from the first side to the second side. Each of the plurality of flutes includes a plurality of recesses in the top side that are spaced apart along the top side of the flute in a direction from the first end of the shaft toward the second end of the shaft. The hole opener further includes a plurality of cutter blocks, each of the plurality of cutter blocks includes a base and a cutter attached to the base. The base is received in one of the plurality of recesses to removably coupled the cutter block to the flute. 1. A hole opener configured for use with a directional drilling rig , the hole opener comprising:a shaft configured for rotation by the directional drilling rig about a longitudinal axis, the shaft including a first end and a second end opposite the first end;a plurality of flutes that extend outwardly from the shaft, each of the plurality of flutes spaced from adjacent flutes in a direction around the longitudinal axis, each of the flutes including a first side that faces toward an adjacent flute, a second side that faces toward an adjacent flute opposite the first side, and a top side that extends from the first side to the second side, each of the plurality of flutes includes a plurality of recesses in the top side that are spaced apart along the top side of the flute in a direction from the first end of the shaft toward the second end of the shaft; anda plurality of cutter blocks, each of the plurality of cutter blocks including a base and a cutter attached to the base, the base received in one of the plurality of recesses to removably coupled the cutter block to the flute.2. The hole opener of claim 1 , wherein the plurality of recesses each include an open end at one of the first ...

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Номер записи: 43
28-01-2021 дата публикации

HOLE OPENER FOR DIRECTIONAL DRILLING

Номер: US20210025243A1
Автор: Graham Cody D., Mueller Jeffrey S.
Принадлежит:

A hole opener configured for use with a directional drilling rig and the hole opener includes a shaft and slots that extends along the shaft. Blades extend radially outward from the shaft and are each received within one of the slots to couple the blades to the shaft for rotation with the shaft and to space the blades apart around the shaft. The hole opener further includes saddles. Each of the saddles includes a slot that receives one of the blades to couple the saddle to the blade and the shaft for rotation with the blade and the shaft. The saddles each include a recess. The hole opener further includes cutters and each of the cutters is received within one of the recesses of the saddles to couple the cutters to the shaft for rotation with the shaft and to space the cutters around the longitudinal axis of the shaft. 1. A hole opener configured for use with a directional drilling rig , the hole opener comprising:a shaft including a first end, a second end; a longitudinal axis that extends through the first end and the second end, and a plurality of slots that extends along the longitudinal axis between the first end and the second end, the plurality of slots spaced apart around the longitudinal axis, the shaft configured for rotation about the longitudinal axis by the hole opener;a plurality of blades that extend radially outward from the shaft, each of the plurality of blades received within one of the plurality of slots to couple the plurality of blades to the shaft for rotation with the shaft about the longitudinal axis and to space the plurality of blades apart around the longitudinal axis of the shaft;a plurality of saddles, each of the plurality of saddles including a slot that receives one of the plurality of blades to couple the saddle to the blade and the shaft for rotation with the blade and the shaft about the longitudinal axis, each of the plurality of saddles including a recess; anda plurality of cutters, each of the plurality of cutters is received ...

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Номер записи: 44
02-02-2017 дата публикации

INTELLIGENT CONTROL OF DRILL PIPE TORQUE

Номер: US20170030181A1
Автор: Deshpande Sneha, JR. Gerre S., Li Fei, Nair Vineet V., Neelgund Rohan V., Thomas John Allen, Voden
Принадлежит:

Tools and method for automatically controlling torque when making-up and/or breaking-down threaded connections between downhole assets such as drill pipe, drill collars, and BAH components. An iron roughneck may be controlled by, for instance, automatically monitoring and adjusting the fluid pressure of cylinders that ultimately provide the torque to the downhole assets. The torque may further be automatically controlled by automatically identifying the downhole assets and selecting a corresponding torque profile or target torque. Clamping force may also be controlled, and is optionally proportional to the target torque. 1. A torque control system , comprising:one or more processors;one or more fluid pressure sensors;one or more torque sensors; andcomputer-readable media including computer-executable instructions which, when executed by the one or more processors, causes the one or more processors to automatically control torque of an torque application device.2. The torque control system of claim 1 , the control of torque including considering geometry of a downhole asset.3. The torque control system of claim 2 , the control of torque including a torque arm based on a width or diameter of the downhole asset.4. The torque control system of claim 1 , the control of torque including considering type of a downhole asset.5. The torque control system of claim 1 , the control of torque including reviewing deviations in seal loss or friction.6. The torque control system of claim 1 , the computer-executable instructions claim 1 , when executed by the one or more processors claim 1 , further causing the one or more processors to automatically control clamping force of the torque application device.7. The torque control system of claim 6 , the clamping force being proportionally controlled relative to the torque.8. The torque control system of claim 1 , the torque application device including concavely curved pads claim 1 , wherein automatically controlling torque of an ...

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Номер записи: 45
01-02-2018 дата публикации

BORE TUBE FOR A PRESSURE COMPENSATION SYSTEM IN A ROLLER CONE DRILL BIT

Номер: US20180030784A1
Автор: Milligan Robin Brian
Принадлежит:

The disclosure relates to a bore tube for a pressure compensation system in a roller cone drill bit. The bore tube includes a bit body having at least one support arm extending therefrom, a lubricant chamber in each support arm, a bore in each support arm extending from to the lubricant chamber to an exterior surface of each support arm, a tube in the bore of each support arm, and a floating bead in the tube and operable to move axially within the tube in response to a pressure of the environment surrounding the roller cone drill bit. 1. A roller cone drill bit comprising:a bit body having at least one support arm extending therefrom;a lubricant chamber in each support arm;a bore in each support arm extending from to the lubricant chamber to an exterior surface of each support arm;a tube in the bore of each support arm; anda floating bead in the tube and operable to move axially within the tube in response to a pressure of the environment surrounding the roller cone drill bit.2. The drill bit of claim 1 , further comprising a retainer located between an end of the tube and the exterior surface of each support arm.3. The drill bit of claim 1 , further comprising a seal located between a wall of the bore and an outer perimeter of the tube.4. The drill bit of claim 1 , wherein an end of the tube is flared.5. The drill bit of claim 1 , wherein the tube is manufactured from stainless steel.6. The drill bit of claim 1 , wherein a surface of an inner perimeter of the tube has a substantially smooth surface texture.7. The drill bit of claim 1 , wherein the tube extends substantially the length of the bore.8. A method for lubricant pressure relief comprising relieving a pressure differential between a lubricant in a lubricant chamber and a wellbore environment whenever a pressure of the lubricant and a pressure of the wellbore environment is substantially unequal claim 1 , wherein the pressure compensation mechanism is in a roller cone drill bit including:a bit body having ...

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Номер записи: 46
01-05-2014 дата публикации

BEARING ASSEMBLIES, APPARATUSES, AND MOTOR ASSEMBLIES USING THE SAME

Номер: US20140116786A1
Автор: Cooley Craig H., Sexton Timothy N.
Принадлежит: US SYNTHETIC CORPORATION

Bearing assemblies, apparatuses, and motor assemblies using the same are disclosed. In an embodiment, a bearing assembly includes a plurality of superhard bearing elements distributed circumferentially about an axis. At least some of the superhard bearing elements may include a first end surface, a second end surface generally opposite the first end surface, a first side surface extending between the first end surface and the second end surface, a second side surface generally opposite the first side surface, and a bearing surface extending between the first end surface, the second end surface, the first side surface and the second side surface. Such superhard bearing elements may also include a ramped feature negatively sloping away from the bearing surface. The bearing assembly may further include a support ring that carries the plurality of superhard bearing elements. 1. A bearing assembly , comprising:a support ring; and a bearing surface; and', 'a means for directing lubricating fluid onto the bearing surface., 'a plurality of superhard bearing elements mounted to the support ring, the plurality of superhard bearing elements distributed circumferentially about an axis, at least some of the plurality of superhard bearing elements including2. The bearing assembly of wherein: a first end surface;', 'a second end surface spaced from and generally opposite to the first end surface;', 'a first side surface extending between the first end surface and the second end surface;', 'a second side surface generally opposite to the first side surface;', 'the bearing surface extends between the first end surface, the second end surface, the first side surface and the second side surface; and, 'the at least some of the plurality of superhard bearing elements includethe means for directing lubricating fluid onto the bearing surface includes a ramped feature having a substantially planar surface sloping away from the bearing surface and toward the first end surface, the ramped ...

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Номер записи: 47
31-01-2019 дата публикации

Cutting element assemblies comprising rotatable cutting elements and earth-boring tools comprising such cutting element assemblies

Номер: US20190032407A1
Автор: Alexander Rodney Boehm, John Abhishek Raj BOMIDI, Jon David SCHRODER, Kegan L. LOVELACE, William A. Moss, Jr.
Принадлежит: Individual

An earth-boring tool comprising a bit-body, a blade, and a cutting element assembly. The cutting element assembly comprising a journal, a rotatable cutting element, and a retention element. The journal defines an upper cylindrical exterior surface, a first bearing surface that intersects the upper cylindrical exterior surface, and a first external groove in the upper cylindrical exterior surface. The rotatable cutting element comprises a table of polycrystalline hard material having an end cutting surface and a supporting substrate. The substrate defines a second bearing surface, a longitudinally extending blind hole having a diameter larger than the diameter of the upper cylindrical exterior surface of the journal, and a second groove in the surface of the substrate defining the blind hole. The retention element is disposed at least partially in the first groove and partially within the second groove.

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Номер записи: 48
31-01-2019 дата публикации

MOVEABLE CUTTERS AND DEVICES INCLUDING ONE OR MORE SEALS FOR USE ON EARTH-BORING TOOLS IN SUBTERRANEAN BOREHOLES AND RELATED METHODS

Номер: US20190032408A1
Автор: Bomidi John Abhishek Raj, Lovelace Kegan L., Schroder Jon David
Принадлежит:

A rotatable element for an earth-boring tool in a subterranean borehole includes a rotatable element and a stationary element. The rotatable element and stationary element include a seal arrangement between the rotatable element and the stationary element. The seal arrangement encloses a volume that remains substantially constant as the rotatable element moves relative to the stationary element. 1. A rotatable cutter for use on an earth-boring tool in a subterranean borehole , comprising:a rotatable element comprising a cutting surface over a support structure; anda stationary element comprising a cavity, the rotatable element disposed at least partially within the cavity, the rotatable element configured to move relative to the stationary element along a longitudinal axis of the rotatable cutter; andat least one seal between the rotatable element and the stationary element, the at least one seal configured to maintain a substantially constant sealed volume defined between the rotatable element and the stationary element, the substantially constant sealed volume configured to contain a fluid.2. The rotatable cutter of claim 1 , wherein the at least one seal further comprises a first seal positioned along the longitudinal axis at a first location proximate the cutting surface of the rotatable element and a second seal positioned at a second location positioned relatively further away from the cutting surface of the rotatable element.3. The rotatable cutter of claim 2 , wherein both the first seal and the second seal are both at least partially fixed to the same one of the rotatable element and the stationary element.4. The rotatable cutter of claim 2 , wherein each of the first seal and the second seal comprises an at least partially annular shape having substantially the same diameter.5. The rotatable cutter of claim 1 , wherein the substantially constant sealed volume configured to contain a substantially incompressible lubricating fluid.6. The rotatable cutter of ...

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Номер записи: 49
31-01-2019 дата публикации

Expansion Anchor Setting Tool

Номер: US20190032693A1
Автор: Holub Justin G., Morel Ross C.
Принадлежит: HammerDragon, LLC

A method and device for setting expansion anchors that includes an elongate rod having a proximal end, a center section, and a distal end. The proximal end and the center section can have an effective diameter of a given expansion anchor. The distal end can have a reduced effective diameter to fit inside the open center space of the given expansion anchor. 1. A device for setting expansion anchors comprising: wherein the proximal end and the center section have an effective diameter of a given expansion anchor, and', 'wherein the distal end is of reduced effective diameter to fit inside the open center space of the given expansion anchor., 'an elongate rod having a proximal end, a center section, and a distal end,'}2. The device of claim 1 , wherein the distal end is of a length of the opening in a given expansion anchor.3. The device of claim 1 , wherein the at least one of the center section or distal end have polygonal cross section shape.4. The device of claim 1 , wherein of the distal end is made of hardened carbon steel.5. The device of claim 1 , wherein at least the distal end is magnetized.6. A device for setting expansion anchors comprising:a first elongate rod having a proximal end member shaped to fix a hammer drill chuck and a rear section having a configuration to fit into the opening of the first distal member and.', 'a distal section having an effective diameter to fit inside the open center space of the given expansion anchor., 'a distal end member which has an opening in the end away from the proximal end member to receive an anchor setting member, wherein the anchor setting member comprises7. The device of wherein at least one of the center section and distal end section have polygonal cross section shape.8. The device of claim 6 , wherein the anchor setting member is magnetized.9. A device for setting expansion anchors comprising:a first elongate rod, having a proximal end member shaped to fix a hammer drill chuck and a rear section drill bit and ...

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Номер записи: 50
11-02-2016 дата публикации

ROLLER CUTTER WITH IMPROVED SEALING

Номер: US20160040482A1
Автор: BROLUND Stig-Ake, LOIKKANEN Joona
Принадлежит:

A roller cutter intended to be used at a drill head for rotary boring of the front of earth and rock formations, the roller cutter having a centre line and being provided with a hub having rows of crushing members. At least one crushing member has its longitudinal axis at an angle relative to a normal to the centre line. The hub is rotatable in relation to a shaft having shaft spigots. The roller cutter is provided with at least one seal retainer arranged at an axial end of the hub in order to hold a sealing means in position. The hub includes at least one circumferential recess positioned axially inward relative to a radially inward projecting flange in the hub. 1. A roller cutter intended to be used at a drill head for rotary boring of the front of earth and rock formations , said roller cutter comprising:a centre line and a hub provided with rows of crushing members, at least one crushing member having a longitudinal axis at an angle relative to a normal to the centre line, said hub being rotatable in relation to a shaft having shaft spigots; and at least one seal retainer arranged at an axial end of the hub to hold a sealing means in position, wherein the hub includes at least one circumferential recess positioned axially inward relative to a radially inward projecting flange in the hub.2. The roller cutter according to claim 1 , wherein one side surface of the flange constitutes a boundary of the at least one recess.3. The roller cutter according to claim 1 , wherein the seal retainer has a maximum axial extension and the flange and the at least one recess are positioned radially outward from said seal retainer and are axially entirely contained within said axial extension.4. The roller cutter according to claim 1 , further comprising an O-ring positioned in the at least one recess.5. The roller cutter according to claim 1 , wherein the at least one seal retainer includes a radially outward directed projecting part disposed at a position forming a seal retainer ...

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Номер записи: 51
09-02-2017 дата публикации

METHODS OF FORMING AND METHODS OF REPAIRING EARTH-BORING TOOLS

Номер: US20170037518A1
Автор: Folks Gregory D., Oxford James Andy, Wangenheim Christoph
Принадлежит:

A method of forming at least a portion of an earth-boring tool using an electronic representation of at least one geometric feature of at least a component of an earth-boring tool stored in memory accessible by a processor operatively connected to a multi-axis positioning system, a direct metal deposition apparatus, and a material removal apparatus. The processor generates a deposition path for the direct metal deposition apparatus is based at least in part on the electronic representation of the at least one geometric feature of the at least a component of the earth-boring tool. The direct metal deposition tool is operated according to the generated deposition path to deposit metal material on an earth-boring tool component coupled to the multi-axis positioning system to at least partially form the at least one geometric feature of the earth-boring tool. Methods also include methods of repairing earth-boring tools. 1. A method of altering at least one dimension of at least a portion of an earth-boring tool using an electronic representation of at least one geometric feature of at least a portion of a component of an earth-boring tool using a multi-axis positioning system , a direct metal deposition apparatus , and a material removal apparatus , the method comprising:generating, with a processor and based at least in part on the electronic representation, a deposition path for deposition of metal material by the direct metal deposition apparatus;depositing metal material according to the generated deposition path using the direct metal deposition apparatus on an earth-boring tool component related to the electronic representation and coupled to the multi-axis positioning system;generating, with the processor and based at least in part on the electronic representation, a removal path for the material removal apparatus; andremoving at least a portion of the deposited metal material according to the generated removal path using the material removal apparatus from the ...

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Номер записи: 52
24-02-2022 дата публикации

CUTTER HEAD ARRANGEMENT

Номер: US20220056801A1
Автор: GOODWIN Nicolaas Bodenstein, JORDAAN Barend Jacobus
Принадлежит: MASTER SINKERS (PTY) LTD.

According to a first aspect of the invention there is provided a cutter head arrangement comprising a cutter head portion including a (substantially cylindrical) cutter head side wall to define a chamber (or cavity) surrounded by the cutter head side wall. A substantially circular rim portion extends from (a distal end of) the cutter head side wall, the rim portion defining a working, contact face of the cutter head portion. A recessed wall portion extends away from the rim portion inwardly into the chamber so as to be surrounded by the cutter head side wall, with the rim portion and/or the recessed wall portion being fitted with a plurality of cutter elements, to enable the cutter head portion to blind bore a pilot hole in use. The recessed wall portion that extends away from the rim portion inwardly into the chamber is a substantially conical body so as to define a conical recess (proximate a central region of the cutter head portion, at a distal end of the cutter head portion). The conical body accordingly defines an inwardly extending apex that terminate substantially in line with a central axis of the cutter head portion. 117.-. (canceled)18. A cutter head arrangement for a blind or shaft sinking rock boring machine , the cutter head arrangement comprising:a cutter head portion including a cutter head side wall to define a chamber surrounded by the cutter head side wall,a rim portion extending from the cutter head side wall, the rim portion defining a working, contact face of the cutter head portion, the rim portion defining at least one material handling aperture;a recessed wall portion, in the form of a conical body, extending away from the rim portion inwardly into the chamber so as to be surrounded by the cutter head side wall, with the rim portion and/or the recessed wall portion being fitted with a plurality of cutter elements to enable the cutter head portion to bore a pilot hole in use.19. The cutter head arrangement of claim 18 , wherein the conical ...

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Номер записи: 53
07-02-2019 дата публикации

WELLBORE REAMING TOOL HAVING SHEAR CUTTERS AND GOUGING CUTTERS

Номер: US20190040687A1
Автор: Carey Shon, Herman John James, Hoffmaster Carl M., Kelley Jason, Nevlud Kenneth M.
Принадлежит:

A reaming tool includes a reaming tool body configured to be coupled within a drill string or a string of drilling tools. A plurality of reaming blocks is attached to the reaming tool body at circumferentially spaced apart locations. Each reaming block comprises at least one row of shear cutters and gouging cutters, the gouging cutters in the at least one row disposed rotationally ahead of the shear cutters in the at least one row. 1. A reaming tool , comprising:a reaming tool body configured to be coupled within a drill string or a string of drilling tools;a plurality of reaming blocks attached to the reaming tool body at circumferentially spaced apart locations; andwherein each reaming block comprises at least one row of shear cutters and at least one row of gouging cutters, the gouging cutters in the at least one row disposed rotationally ahead of the shear cutters in the at least one row.2. The reaming tool of wherein the gouging cutters are disposed longitudinally between adjacent shear cutters.3. The reaming tool of wherein each reaming block comprises two rows of shear cutters and gouging cutters.4. The reaming tool of wherein the two rows of shear cutters and gouging cutters are rotationally separated by a junk slot.5. The reaming tool of wherein the at least one row of shear cutters and gouging cutters defines a cutting profile having an increasing diameter with respect to a longitudinal distance of the cutters from an end of the reaming tool body directed toward a drill bit.6. The reaming tool of wherein the reaming blocks comprise a gage surface longitudinally above an uppermost one of the shear cutters and gouging cutters.7. The reaming tool of further comprising at least one backreaming cutter assembly disposed longitudinally above the gage surface on at least one reaming block.8. The reaming tool of wherein the at least one backreaming cutter assembly comprises at least one shear cutter and at least one gouging cutter disposed rotationally ahead of the ...

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Номер записи: 54
07-02-2019 дата публикации

INTEGRAL ELECTRICALLY ISOLATED CENTRALIZER AND SWELL PACKER SYSTEM

Номер: US20190040694A1
Автор: Smith Lee Morgan
Принадлежит:

A field created integral electrically isolated centralizer and swell packer system for wellbore tubulars having in series over the wellbore tubular, a first end ring, a swell packer portion over a first and second primer optionally with cured resin, a second end ring, wherein the end rings inhibit axial movement of the swell packer portion. Integral with the swell packer portion an electrically isolating centralizer; a cured resin bonded to the wellbore tubular filling all hollow spaces of the centralizer portion integrally forming a high strength bond, while excluding bonding to the first and second end rings, the cured resin configured to cure to a hardness of at least 50 shore A and withstand temperatures and pressures within a wellbore for at least twenty-four hours without melting, while specifically excluding a sand screen. 1. A field created integral electrically isolated centralizer and swell packer system as an integral assembly comprising:i. a wellbore base tubular having a box end and a pin end;ii. a first end ring with a first end ring inner diameter slightly smaller than a box end inner diameter, the first end ring mounted adjacent the box end around the wellbore base tubular; 1) a first primer disposed on the wellbore base tubular adjacent the first end ring;', '2) a cured resin formed from a liquid phase injectable material disposed on the first primer; and', '3) a tubular swellable material disposed on the cured resin, the tubular swellable material having a swellable material inner diameter slightly less than the first end ring inner diameter, the tubular swellable material selected to expand on exposure to at least one triggering fluid used in the wellbore forming a seal in the wellbore upon expansion; the tubular swellable material mounted to the first end ring over the first primer;, 'iii. a swell packer portion comprisingiv. a second primer disposed on the wellbore base tubular as part of the swell packer portion;v. a second end ring disposed on ...

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Номер записи: 55
18-02-2016 дата публикации

Downhole motor

Номер: US20160047169A1
Автор: Dean Livingstone
Принадлежит: Dynomax Drilling Tools Inc Canada

A downhole mud motor is formed of plural housings containing at least a drive section and a transmission section. At least a housing of the plural housings has a longitudinal axis and incorporates a reaming section with one or more rotary reamers. Each of the one or more rotary reamers is mounted in a respective pocket for rotation about a transverse axis relative to the longitudinal axis of the housing.

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Номер записи: 56
19-02-2015 дата публикации

Using magnetic force/field for drill bits and other cutting tools

Номер: US20150047911A1
Автор: CHEN CHEN, Joseph Swinehart, Youhe Zhang, Yuri Burhan
Принадлежит: Smith International Inc

A cutting element assembly includes a rotatable cutting element having an axis of rotation extending axially therethrough, a cutting face and a body extending axially downward from the cutting face, at least one retention mechanism disposed adjacent to the rotatable cutting element, and a first magnet disposed at a back face of the rotatable cutting element.

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Номер записи: 57
15-02-2018 дата публикации

Durable rock bit for blast hole drilling

Номер: US20180044993A1
Автор: Amnach Kongamnach, Tony Jack Beavers
Принадлежит: Varel International Industries LP

A rock bit for blast hole drilling includes: a bit body having a coupling formed at an upper end thereof, a plurality of lower legs, a dome formed between the legs, and a bore formed through the coupling and the dome; a plurality of skirts, each skirt covering a gap formed between adjacent legs and each skirt mounted to edges of adjacent legs; a plurality of roller cones, each rotary cone rotatably mounted to a respective bearing shaft of a respective leg; a row of gage cutters mounted to each roller cone; a row of inner cutters mounted to each roller cone; one or more nose cutters mounted to each roller cone; and a center jet secured in the bore. Each cutter is an insert.

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Номер записи: 58
16-02-2017 дата публикации

METHOD AND DEVICE FOR TRENCHLESS PIPE LAYING

Номер: US20170045156A1
Автор: Lubberger Michael, RENNKAMP Diana
Принадлежит:

The invention relates to a boring and laying device for the trenchless laying of a pipeline, with a boring head for loosening the rock, wherein the boring head has a connection for a pilot bore linkage, with a pump for suctioning and conveying away the drillings loosened by the boring head, with a conveying portion behind the boring head in which at least one suction element for receiving and conveying away the loosened rock is provided, and with a connecting portion which has a connection for the pipeline, and to a boring and laying method for the trenchless laying of a pipeline, in which a pilot bore is produced from a starting point to a destination point along a predetermined boring line, wherein the pilot bore is obtained by advancing a pilot boring head with a pilot bore linkage, and in which, after reaching the destination point, a boring and laying head is connected to one end of the pilot bore linkage, which head is connected to the pipeline and via which the borehole is expanded, and simultaneously the pipeline is laid by pulling the pilot bore linkage out of the borehole on one side and/or by pushing the pipeline into the borehole, wherein drillings loosened by the boring head are hydraulically received behind the boring head of the boring and laying device and conveyed away out of the borehole by means of a pump. 1. A boring and laying device for the trenchless laying of a pipeline , a connection for a pilot bore linkage;', 'a connection for a following element of the boring and laying device;, 'with a boring head for loosening the rock comprisinga rotary element,with a connecting portion as a connection for the pipeline,including a conveying portion behind the boring head comprising at least one receiving element for receiving the loosened rock, and, a pump for suctioning and conveying away the drillings loosened by the boring head and', 'the connecting portion for a following element of the boring and laying device, 'a functional portion ...

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Номер записи: 59
25-02-2016 дата публикации

SLIDE REAMER AND STABILIZER TOOL

Номер: US20160053548A1
Автор: Harvey Michael James, Rajic Milan, Vacar Jovan
Принадлежит:

A downhole tool, for selectively reaming a wellbore or stabilizing drill string components within a wellbore, includes an elongate tool body adapted to receive reamer cartridges or stabilizer cartridges depending on the function desired. The reamer cartridges are radially insertable into corresponding pockets in the tool body, with each reamer cartridge having a reamer insert with an array of cutting elements. The reamer insert is disposed within a bushing and is rotatable relative thereto, about a rotational axis transverse to the longitudinal axis of the tool. However, the rotational axis is offset from the tool body axis, resulting in eccentric contact of the cutting elements with the wall of the wellbore, which in turn imparts rotation to the reamer insert when the tool is being moved axially through a wellbore without rotation. When the tool is to be used for stabilization, the reamer cartridges can be removed and replaced with stabilizer cartridges having stabilizer inserts with hard-faced stabilizer cones. 1. A downhole tool comprising an elongate main body having:(a) a longitudinal axis;(b) an outer surface; and(c) a plurality of channels formed into said outer surface, said channels dividing the main body into a plurality of blade sections corresponding in number to the number of channels;wherein each of at least two of the blade sections has one or more cartridge pockets formed into the outer surface thereof, each cartridge pocket being configured to receive a tool cartridge housing a tool insert such that the tool insert is confined to rotate by a side wall about a rotational axis transverse to, and offset from, the longitudinal axis of the main body.2. The downhole tool of wherein the channels are angularly skewed relative to the longitudinal axis of the main body.3. (canceled)4. The downhole tool of wherein at least one cartridge pocket has a tool cartridge removably retained therein claim 1 , said tool cartridge comprising:(a) a cartridge bushing ...

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Номер записи: 60
25-02-2021 дата публикации

CONTINUOUS SAMPLING DRILL BIT

Номер: US20210054695A1
Автор: CORONA ROBERT ANDREW, Drenth Christopher L.
Принадлежит:

A drill bit comprises a first and a second body received within the first body. Each of the first body and second body has a respective crown, each crown having an inner and an outer operative circumference. The outer operative circumference of the second body and the inner operative circumference of the first body can define a first volume that can receive a tubular core sample. The second body can define a break surface that breaks the tubular core sample into core pieces. The drill bit can be employed in a borehole with a reverse circulation system that pumps fluid around an outer surface of the bit, and returning fluid can carry the core pieces out of the borehole. 1. A drill bit having a central axis , the drill bit comprising: at least one inner crown portion defining an outer operative circumference, wherein the outer operative circumference of the inner crown portion has a diameter; and', 'at least one outer crown portion defining an outer operative circumference and an inner operative circumference that is spaced radially outward from the outer operative circumference of the at least one inner crown portion, wherein the outer operative circumference of the at least one inner crown portion and the inner operative circumference of the at least one outer crown portion define a first volume therebetween, wherein the first volume is configured to receive a tubular core sample; and, 'a crown having a cutting face and comprisinga shank having a proximal end that is configured to couple to a drill rod, wherein the shank comprises an outer shank portion and an inner shank portion, the outer shank portion being secured to the at least one outer crown portion, the inner shank portion being secured to the at least one inner crown portion, the shank defining a second volume in communication with the first volume, the second volume being defined between the inner and outer shank portions, wherein the inner shank portion has an outer diameter and a first frustoconical ...

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Номер записи: 61
22-02-2018 дата публикации

CUTTER FOR BORING HEAD

Номер: US20180051519A1
Автор: LINDBLOM Anders, LOIKKANEN Joona
Принадлежит:

A cutter for a boring head having a shaft is mountable at a saddle. A roller body is rotatably mounted about the shaft via bearings housed at a cavity located radially between the shaft and the roller body. A lubrication fluid is configured to flow internally within the shaft via a first and second passageway. An elongate overflow chamber is provided in fluid communication with the passageways to receive thermally expanded lubrication fluid from the cavity. 1. A cutter for a boring head , the cutter comprising:a shaft having a longitudinal axis mountable at a saddle of a boring head;a roller body rotatably mounted about the shaft and having cutting elements provided at an external face;bearings mounted within an annular cavity located radially between the shaft and the roller body;a first passageway centred on the axis of the shaft and extending axially through the shaft from a first end;a second passageway extending transverse or perpendicular to the first passageway to provide a fluid link between the first passageway and the cavity; andan elongate overflow chamber centred on the axis of the shaft and formed as an elongate axial extension of the first passageway to extend axially through the shaft beyond the second passageway as a blind bore, the chamber having an unoccupied internal volume along its axial length configured to receive a lubrication fluid from the annular cavity.2. The cutter as claimed in claim 1 , wherein the axial length of the chamber is in the range 1.5 to 5.0 times a diameter or width of the chamber in a radial direction.3. The cutter as claimed in claim 2 , wherein the range is 2.5 to 3.5.4. The cutter as claimed in claim 1 , wherein the first passageway and the chamber are substantially cylindrical.5. The cutter as claimed in claim 4 , wherein a diameter of the first passageway is greater than a diameter of the chamber.6. The cutter as claimed in claim 1 , wherein an axial length of the first passageway is greater than the axial length of ...

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Номер записи: 62
15-05-2014 дата публикации

TWO-CENTRE ROTARY BORING BIT AND METHOD FOR DEEPENING AN EXISTING WELL

Номер: US20140131111A1
Автор: Deschamps Benoit, Desmette Sebastian Daniel Jean, Hahati Abdelhakim
Принадлежит: TERCEL IP LTD.

Two-centre rotary boring bit for boring wells, comprising, on the one hand, a pilot tool () comprising a body of revolution with an axial core () and radial blades () bearing cutting elements () and, on the other hand, an enlarging tool () fitted behind the pilot tool and laterally offset therefrom, the pilot tool having, on its front face, a central region () that has no cutting elements in order to allow the creation of a core sample (), said central region being in communication with a cavity () situated between two blades () of the pilot tool () and serving to remove the core sample toward the periphery of the boring bit. 1111512134. Two-centre rotary boring bit for boring wells , comprising , a pilot tool comprising a body of revolution with an axial core and radial blades carrying cutting elements and , an enlarging tool located behind the pilot tool and laterally offset relative to the pilot tool , wherein the front face of the pilot tool () has an axial central region () which is devoid of cutting elements () for allowing the creation of an axial core sample () , said central region being in communication with a cavity () located between two blades () of the pilot tool and serving to evacuate the core sample toward the periphery of the boring bit.2134114. Boring bit according to claim 1 , wherein the cavity () is delimited by two blades () of the pilot tool () and a clearance surface () set back relative to the front face of said pilot tool.32191319. Boring bit according to claim 1 , wherein the enlarging tool () is offset relative to the pilot tool () claim 1 , in such a way that a portion () of its peripheral surface is radially set back relative to the peripheral surface of the pilot tool and in that the cavity () of the pilot tool () ends up in said portion () of the peripheral surface of the enlarging tool.42678137. Boring bit according to wherein the enlarging tool () comprises a core () with radial blades () carrying cutting elements () and in that ...

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Номер записи: 63
21-02-2019 дата публикации

DRILLING MACHINE

Номер: US20190055785A1
Автор: Dudley James, Reese Michael, Spatz Edward
Принадлежит:

A drilling machine for a wellbore is provided. The drilling machine may include a dynamic lateral pad that is movable between an extended and retracted position. In the extended position, the pad moves the drill bit in a direction for drilling. The drilling machine may include a dynamic lateral cutter that is movable between an extended and retracted position. In at least the extended position, the cutter engages the wellbore and removes formation. The drilling machine may include a monolithic or integral drill bit/drive shaft to reduce the distance between a positive displacement motor and a distal end of the monolithic or integral drill bit/drive shaft. The drilling machine may include separate cutting structures that have different rotational speeds and can further utilize the integral drill bit/drift shaft and/or a bent housing that generates an off-axis rotation which helps optimize the formation removal in the center area of the wellbore. 1. A method of drilling a wellbore in a formation , the method comprising:providing a drill string in a wellbore where the drill sting comprises a power section, a transmission section, a bearing assembly, and a drill bit wherein the power section is operatively coupled to the drill bit through the transmission section, the drill string comprises a recess defining a volume formed in an outer sidewall of the drill string, a pad operatively sized to be received in the volume and move radially inward and outward with respect to the outer sidewall, and an actuator operatively engaged with the pad to selectively move the pad radially outward and configured such that reactive pressure from the wellbore selectively moves, in part, the pad radially inward;selecting a target direction to move the drill string in the wellbore;causing the actuator to operatively engage the pad to move the pad radially outward and engage the wellbore at a point opposed to the target direction and push the drill string in the target direction; androtating ...

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Номер записи: 64
01-03-2018 дата публикации

Reamer Cutting Insert for Use in Drilling Operations

Номер: US20180058147A1
Автор: SHOTWELL DUANE
Принадлежит:

The invention relates to reamers used in downhole oil well drilling operations, particularly in reaming while drilling applications. Presented is a reamer having an interior channel which runs along an elongate axis of the entire body of the reamer, wherein there are openings along both ends of the reamer, exposing the interior channel. Additionally presented in the reamer are a plurality of paths extending parallel to the interior channel along the exterior of the body of the reamer, and running in a helical pattern along the entirety of the exterior of the body of the reamer. Disposed within the helical paths are a plurality of cutting inserts, which cutting inserts are enabled to provides a uniform cutting surface against a well bore, which preferably improves cutting action and reduces strain on the reamer. 1. A cutting insert for coupling with a reamer , the cutting insert comprising:a cutting insert with a top side, a attachment side and a sidewall, wherein the cutting insert is coupled to a reamer;the attachment side is adapted for insertion into the reamer;the sidewall extending axially from the attachment side to the insert top side and radially from the centerline to an outside maximum radius, and the sidewall adapted for at least partial insertion into the reamer;the top side comprising an outer cutting edge, an inner cutter edge and a depression, the depression extending from the top side inner cutting edge and toward the reamer surface.2. The cutting insert of claim 1 , wherein the outer cutting edge is substantively circular or a closed polygon axi-symmetric and normal to a cutting insert central axis.3. The cutting insert of claim 1 , wherein the inner cutting edge is substantively circular or axi-symmetric to a cutting insert central axis.4. The cutting insert of claim 3 , wherein the outer cutting edge is substantively circular or axi-symmetric to the cutting insert central axis.5. The cutting insert of claim 4 , wherein a wall of the depression is ...

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Номер записи: 65
04-03-2021 дата публикации

Drill Bore Protection Device and Method

Номер: US20210062587A1
Автор: Wyatt David R., Wyatt Robert
Принадлежит:

A drill bore protection device and method for protecting a drill bore are provided. The drill bore protection device includes an elongated member. The elongated member is defined by a front end and a rear end. A first sleeve is placed on the elongated member next to the front end of the elongated member. Additionally, a second sleeve is placed on the elongated member next to the rear end of the elongated member. The first sleeve and the second sleeve each have an open end and a closed end. The closed ends of the first sleeve and the second sleeve face the front end of the elongated member, while the open ends of the first sleeve and the second sleeve face the rear end of the elongated member. The first sleeve defines a first interior cavity. A liner is disposed in the first interior cavity of the first sleeve. 1) A drill bore protection device , comprising:an elongated member defining a front end opposite of a rear end;a first sleeve defined on the front end of the elongated member;the first sleeve defining a first interior cavity;a second sleeve defined on the rear end of the elongated member;the first sleeve and the second sleeve each defining a closed end and an open end;the closed end of each of the first sleeve and the second sleeve facing the front end of the elongated member;the open end of each of the first sleeve and the second sleeve facing the rear end of the elongated member;a liner disposed in the first interior cavity of the first sleeve.2) The drill bore protection device of claim 1 , wherein the elongated member is hollow in construction.3) The drill bore protection device of claim 1 , wherein the elongated member claim 1 , the first sleeve and the second sleeve are made of a plastic material.4) The drill bore protection device of claim 1 , wherein the first sleeve and the second sleeve are identical in diameter.5) The drill bore protection device of claim 1 , wherein the elongated member configured to secure to a stinger of a reamer.6) The drill ...

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Номер записи: 66
29-05-2014 дата публикации

Drill Assembly

Номер: US20140144710A1
Автор: KORTE Pasi, MATTILA Mikko
Принадлежит:

Drill assembly for making a hole into a soil or rock which arrangement comprises a pilot bit () drilling the middle part of the hole and a ring bit () drilling the outer circle of the hole in which case in the drilling situation the ring bit () is adjusted around the pilot bit () and rotary movement and drilling impacts are directed from the pilot bit () to the ring bit () with the help of the mentioned surfaces (-);(-),() adjusted between the bits and conveying power and that the ring bit () can be removed around the pilot bit () and can be installed to it and that further a coupling ring () belongs around the ring bit () in order to join a casing pipe, which can be pulled to the drilled hole, to the ring bit () with the help of the mentioned coupling ring. The coupling ring. () is adjusted around the periphery of the ring bit () in such a way that of the parts () taking part in the locking of the coupling ring () at least two are located at the different sides of the line (L) when the arrangement is assembled which line runs essentially through the middle point of the surface () conveying the rotation of the ring bit (). 110111010146791516110211121132151. Drill assembly for making a hole into a soil or rock which assembly comprises a pilot bit () drilling the middle part of the hole and a ring bit () drilling the outer circle of the hole in which case in the drilling situation the ring bit () is adjusted around the pilot bit () and rotary movement and drilling impacts are directed from the pilot bit () to the ring bit () with the help of the mentioned surfaces (-);(-);( , ) adjusted between the bits and conveying power and that the ring bit () can be removed around the pilot bit () and can be installed to it and that further a coupling ring () , which can be locked to the ring bit () , belongs around the ring bit () in order to join a casing pipe , which can be pulled into the drilled hole , to the ring bit () with the help of the mentioned coupling ring , ...

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Номер записи: 67
27-02-2020 дата публикации

SEAL STRUCTURE

Номер: US20200063870A1
Автор: JING Chao, MINAMI Mitsuru, NORIDUKI Yuki, Ueda Akira, Yamamoto Takahiro
Принадлежит:

A seal structure includes a ring-shaped seal member. The seal member is disposed in a seal groove. The case includes a low-pressure lateral face in a cross section of the seal structure, the cross section being taken along an imaginary plane in parallel with a shaft axial direction of the shaft and passing through a center line of the shaft. The seal member includes a first protruding portion. The first protruding portion protrudes from a main portion having a bottom face in contact with the low-pressure lateral face, and has a shape such that the first protruding portion extends toward the shaft as the first protruding portion extends toward the low-pressure side. The first protruding portion includes a tip. The first protruding portion includes a contact region in contact with the shaft. The tip is closer to the low-pressure side than the contact region is. 1. A seal structure comprising a ring-shaped seal member disposed in a seal groove formed in a case at a sliding gap between a shaft and the case , the seal member separating a high-pressure side from a low-pressure side , a low-pressure lateral face constituting a lateral face of the seal groove on the low-pressure side, and extending along a direction orthogonal to a shaft axial direction of the shaft in a cross section of the seal structure, the cross section being taken along an imaginary plane in parallel with the shaft axial direction and passing through a center line of the shaft, and', 'a groove bottom constituting a bottom face of the seal groove, and extending along the shaft axial direction in the cross section,, 'the case including'} a main portion including a bottom face in contact with the low-pressure lateral face, and', 'a first protruding portion protruding from the main portion and having a shape such that the first protruding portion extends toward the shaft as the first protruding portion extends toward the low-pressure side,, 'the seal member including'}the first protruding portion ...

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Номер записи: 68
19-03-2015 дата публикации

Subsurface drilling tool

Номер: US20150075868A1
Автор: Kevin Dewayne Jones
Принадлежит: Individual

The present invention relates in general to subsurface drilling tools, and more specifically, to a drill bit comprising a ball shaped cutting tool. The drill bit is configured so that a plurality of cones, forming the ball shaped cutting tool, rotate in opposite directions around an axle while the drill bit is drilling or cutting through the ground, rock, or other material. The drilling or cutting is accomplished by a plurality of blade inserts that fit inside and protrude therefrom a plurality of holes covering the exterior of the ball shaped cutting tool. The purpose of the present invention is to provide a new and improved subsurface drilling tool that will efficiently drill hard rock formations.

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Номер записи: 69
19-03-2015 дата публикации

System and method for horizontal directional drilling and product pulling through a pilot bore

Номер: US20150075870A1
Автор: Cary Cooper
Принадлежит: Cary Cooper

Disclosed is a system and method employed in a horizontal directional drilling (“HDD”) process. An exemplary embodiment includes a drill bit with thirteen (13) or more splines for improved orientation of the drill bit relative to the orientation of a bent sub. Another exemplary embodiment includes a drill bit configured for receipt of a pulling device so that the drill bit may be used in a back reaming step to pull a product back through a pilot bore. Another exemplary embodiment includes a pulling device for mounting to a drill bit. The pulling device, in some embodiments, may include one or more pins for diverting and channeling air and/or fluid through the drill bit to lubricate a hammer assembly and/or the product being pulled as the drill string to which the drill bit is attached is retracted back through the pilot bore.

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Номер записи: 70
19-03-2015 дата публикации

SUBSURFACE DRILLING TOOL

Номер: US20150075873A1
Автор: Jones Kevin Dewayne
Принадлежит:

The present invention relates in general to subsurface drilling tools, and more specifically, to a drill bit comprising a ball shaped cutting tool. The drill bit is configured so that a plurality of cones, forming the ball shaped cutting tool, rotate in opposite directions around an axle while the drill bit is drilling or cutting through the ground, rock, or other material. The drilling or cutting is accomplished by a plurality of blade inserts that fit inside and protrude therefrom a plurality of holes covering the exterior of the ball shaped cutting tool. The purpose of the present invention is to provide a new and improved subsurface drilling tool that will efficiently drill hard rock formations. 1. A drill bit for use in a drilling operation comprising:a body comprising an axle;a wheel comprising a plurality of sections configured to rotate independently about the axle while drilling; andwherein the diameter of the wheel is greatest at its center.2. The drill bit of further comprising a plurality of holes covering the exterior of the wheel.3. The drill bit of further comprising a plurality of blade inserts that fit inside the plurality of holes claim 2 , wherein each blade insert comprises a cutting face and a trailing face.4. The drill bit of wherein the plurality of sections are configured such that they tear at an object upon rotation of the sections in opposite directions while engaged with the object.5. The drill bit of wherein the wheel is configured to impact into the object.6. The drill bit of wherein the wheel is configured to mill the object by scraping the plurality of sections against the object.7. The drill bit of wherein the object is a frac plug.8. The drill bit of wherein the object is a sliding sleeve.9. The drill bit of wherein the body further comprises a plurality of cutters affixed to an outer circumference of the body.10. The drill bit of wherein the plurality of cutters reduce friction between the body and a hole created by the bit.11. The ...

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Номер записи: 71
15-03-2018 дата публикации

NESTED BEARING AND SEAL FOR ROLLER CONE DRILL BIT

Номер: US20180073302A1
Автор: Williams Mark E.
Принадлежит:

The present disclosure relates to nested bearings and seals for use in roller cone drill bits. The bearing may include a bearing member, such as a flange or bushing, that is nested with a seal boss. 1. This listing of the claims will replace all prior versions , and listing , of claims in the application:1. A drill bit bearing assembly comprising:a spindle;a cone assembly rotatably mounted on the spindle;a seal located between the spindle and cone assembly, the seal comprising a seal boss associated with the spindle; and a first bearing surface defined by the spindle;', 'a second bearing surface defined by the cone assembly;', 'a bearing member co-extensive with the first bearing surface or the second bearing surface and extending into a gap formed between the first bearing surface and the seal boss., 'a bearing formed from at least a portion of the spindle and at least a portion of the cone assembly, the bearing comprising2. The bearing assembly of claim 1 , wherein the bearing member comprises a flange extending into a gap formed between the first bearing surface and the seal boss.3. The bearing assembly of claim 1 , wherein the bearing member comprises a bushing extending into a gap formed between the first bearing surface and the seal boss.4. The bearing assembly of claim 1 , wherein the seal boss is not integral with the bushing.5. The bearing assembly of claim 1 , wherein the seal is an axial seal.6. The bearing assembly of claim 1 , wherein the seal is a- radial seal.7. The bearing assembly of claim 1 , wherein the seal comprises an O-ring seal claim 1 , a packing ring seal claim 1 , a ceramic seal claim 1 , a metal-to-metal seal claim 1 , or any combination thereof.8. The bearing assembly of claim 1 , wherein the seal boss is not integral with the spindle.9. (canceled)10. A drill bit comprising: 'a spindle;', 'at least one arm comprisinga cone assembly rotatably mounted on the spindle;a seal located between the spindle and cone assembly, the seal comprising ...

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Номер записи: 72
24-03-2022 дата публикации

REDUCING FRICTION IN A DRILL STRING AND CLEANING A WELLBORE

Номер: US20220090450A1
Автор: Amoudi Ahmad A., Sehsah Ossama R.
Принадлежит:

A drilling assembly includes a drill string configured to be disposed within a wellbore. The drilling assembly also includes a sub fluidically coupled to the drill string. The sub includes a mandrel fixed to the drill string and defines an external helically undulated surface and a bore configured to flow drilling fluid received from the drill string. The sub includes a sleeve rotationally coupled to and disposed outside the mandrel. The sleeve has an internal helically undulated surface corresponding with the external helically undulated surface of the mandrel to form, with the mandrel, a progressive cavity. The progressive cavity receives fluid from the bore of the mandrel to rotate the sleeve as the drilling fluid flows along the cavity. The sub also includes a valve configured to regulate a flow of the drilling fluid along the bore to direct fluid toward or away from the progressive cavity. 1. A drilling assembly comprising:a drill string configured to be disposed within a wellbore, the drill string configured to flow drilling fluid; and a mandrel fixed to the drill string and defining an external helically undulated surface and a bore configured to flow the drilling fluid received from the drill string,', 'a sleeve rotationally coupled to and disposed outside the mandrel, the sleeve comprising an internal helically undulated surface corresponding with the external helically undulated surface of the mandrel to form, with the mandrel, a progressive cavity configured to receive fluid from the bore of the mandrel to rotate the sleeve as the drilling fluid flows along the cavity, and', 'a valve coupled to the bore of the mandrel, the valve configured to regulate a flow of the drilling fluid along the bore to direct fluid toward or away from the progressive cavity., 'a sub fluidically coupled to the drill string, the sub comprising2. The drilling assembly of claim 1 , wherein the bore of the mandrel comprises two fluid ports spaced from each other claim 1 , the ...

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Номер записи: 73
05-03-2020 дата публикации

STEPPED DOWNHOLE TOOLS AND METHODS OF USE

Номер: US20200072000A1
Автор: Azar Michael George, Downton Geoffrey Charles, Parkin Edward George
Принадлежит:

A downhole tool includes at least a pilot section, a first expansion section, and a second expansion section. The pilot section has a plurality of cutting elements to cut a pilot hole. Each of the expansion sections has a plurality of cutting elements to successively expand the pilot hole to achieve a final wellbore radius. The pilot section, first expansion section, and second expansion section each have one or more stabilizer pads on respective gages to stabilize the downhole tool during wellbore creation. 1. A downhole tool , comprising:a pilot section including a plurality of pilot cutting elements and a pilot gage, the pilot gage including at least one pilot stabilizer pad at a pilot radius;a first expansion section positioned in an uphole longitudinal direction relative to the pilot section, the first expansion section including a plurality of first expansion cutting elements and a first expansion gage, the first expansion gage including at least one first expansion stabilizer pad at a first expansion radius greater than the pilot radius; anda second expansion section positioned in the uphole longitudinal direction relative to the first expansion section, the second expansion section including a plurality of second expansion cutting elements and a second expansion gage having a second expansion radius greater than the first expansion radius.2. The downhole tool of claim 1 , the pilot radius being between 70% and 95% of the second expansion radius.3. (canceled)4. The downhole tool of claim 1 , the second expansion section including at least one second expansion stabilizer pad at the second expansion radius.5. The downhole tool of claim 1 , at least one of the first or second expansion cutting elements being a non-planar cutting element.6. The downhole tool of claim 1 , at least one of the first or second expansion cutting elements having a cutting element longitudinal axis oriented between 35° and 65° relative to a longitudinal axis of the downhole tool.7. The ...

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Номер записи: 74
18-03-2021 дата публикации

Hybrid Drill Bit with Axially Adjustable Counter-Rotation Cutters in Center

Номер: US20210079731A1
Автор: Grosz Gregory Christopher
Принадлежит:

A hybrid drill bit includes both fixed cutting elements and an adjustable cutting structure thereon. An adjustment mechanism is provided to allow an axial position of cutting elements at a leading end of the adjustable cutting structure to be adjusted with respect to an axial position of the fixed cutting elements. The adjustable cutting structure may include counter rotational cutting members mounted obliquely with respect to a bit body rotational axis, and the adjustment mechanism may dynamically support the adjustable cutting structure such that the axial position of the cutting elements may be adjusted as the drill bit is in operation within a wellbore. The axial position may be adjusted by altering a weight applied to the drill bit within the wellbore. 1. A drill bit for forming a wellbore through a geologic formation , the drill bit comprising:a connector configured for connection to a drillstring,a bit body coupled to the connector and defining a bit body rotational axis extending longitudinally therethrough;an adjustable cutting structure mounted on the bit body, the adjustable cutting structure including at least one cutting element protruding from a leading end of the bit body for penetrating the geologic formation; andan adjustment mechanism disposed between the bit body and the adjustable cutting structure for supporting the adjustable cutting structure at a plurality of axial positions with respect to the bit body wherein the adjustment mechanism statically supports the adjustable cutting structure on at least one substantially rigid spacer member disposed between the adjustable cutting structure and the bit body.24-. (canceled)5. The drill bit of claim 1 , further comprising a fixed cutting structure including at least one fixed cutting element mounted on the bit body for rotation with the bit body about the bit body rotational axis.6. The drill bit of claim 5 , wherein the fixed cutting structure comprises a plurality of fixed cutting elements mounted ...

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Номер записи: 75
18-03-2021 дата публикации

Hybrid Drill Bit with Axially Adjustable Counter-Rotation Cutters in Center

Номер: US20210079732A1
Автор: Grosz Gregory Christopher
Принадлежит:

A hybrid drill bit includes both fixed cutting elements and an adjustable cutting structure thereon. An adjustment mechanism is provided to allow an axial position of cutting elements at a leading end of the adjustable cutting structure to be adjusted with respect to an axial position of the fixed cutting elements. The adjustable cutting structure may include counter rotational cutting members mounted obliquely with respect to a bit body rotational axis, and the adjustment mechanism may dynamically support the adjustable cutting structure such that the axial position of the cutting elements may be adjusted as the drill bit is in operation within a wellbore. The axial position may be adjusted by altering a weight applied to the drill bit within the wellbore. 1. A drill bit for forming a wellbore through a geologic formation , the drill bit comprising:a connector configured for connection to a drillstring,a bit body coupled to the connector and defining a bit body rotational axis extending longitudinally therethrough;an adjustable cutting structure mounted on the bit body, the adjustable cutting structure including at least one cutting element protruding from a leading end of the bit body for penetrating the geologic formation; andan adjustment mechanism disposed between the bit body and the adjustable cutting structure for supporting the adjustable cutting structure at a plurality of axial positions with respect to the bit body wherein the adjustment mechanism comprises a cavity defined in the bit body that is filled with a support material selected from the group consisting of a compressible gas, a liquid, a viscoelastic material and a hyper-elastic material.24-. (canceled).5. The drill bit of claim 1 , further comprising a fixed cutting structure including at least one fixed cutting element mounted on the bit body for rotation with the bit body about the bit body rotational axis.6. The drill bit of claim 5 , wherein the fixed cutting structure comprises a plurality ...

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Номер записи: 76
26-03-2015 дата публикации

HYDRAULIC ACTIVATION OF MECHANICALLY OPERATED BOTTOM HOLE ASSEMBLY TOOL

Номер: US20150083497A1
Автор: Che Khac Nguyen, Mageren Olivier
Принадлежит: Halliburton Energy Services, Inc.

A method of hydraulically activating a mechanically operated wellbore tool in a bottom hole assembly includes: holding moveable elements of the wellbore tool in an unactivated position using a shear pin; inserting one or more drop balls into a drilling fluid; and flowing the drilling fluid with the drop balls to a flow orifice located in or below the wellbore tool. The flow orifice is at least partially plugged with the drop balls to restrict fluid flow and correspondingly increases the hydraulic pressure of the drilling fluid. The hydraulic pressure is increased to a point beyond the rating of the shear pin, thereby causing the shear pin to shear and allowing the moveable elements of the tool to move to an activated position. 1. (canceled)2. The method of claim 3 , wherein the wellbore tool comprises a near-bit reamer having a plurality of cutter elements initially held in a radially-retracted position claim 3 , and wherein allowing the moveable elements of the tool to move to an activated position comprises moving the cutter elements to a radially-outward position.3. A method of hydraulically activating a mechanically operated wellbore tool in a bottom hole assembly claim 3 , the method comprising:lowering the bottom hole assembly into a wellbore;holding moveable elements of the wellbore tool in an unactivated position using at least one shear pin;inserting one or more drop balls into a drilling fluid;flowing the drilling fluid and the drop balls to a flow orifice comprising, flowing the drilling fluid and the drop balls to one or more drill bit nozzle inlets located in or below the wellbore tool;at least partially plugging a flow orifice with the drop balls to restrict fluid flow and correspondingly increase hydraulic pressure of the drilling fluid;creating a force on the at least one shear pin responsive to the hydraulic pressure; andincreasing the hydraulic pressure of the drilling fluid to shear the at least one shear pin, thereby allowing the moveable ...

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Номер записи: 77
14-03-2019 дата публикации

AUTOMATED OPTIMIZATION OF DOWNHOLE TOOLS DURING UNDERREAMING WHILE DRILLING OPERATIONS

Номер: US20190078428A1
Автор: Fang Lei, Grymalyuk Sergiy, Schimanski Michell
Принадлежит: Baker Hughes, a GE company, LLC

Systems and methods for adjusting a drilling operation, the methods and systems include obtaining, at a control system, a first drilling characteristic associated with a first drilling operation device that is part of a drilling system on a drill string; obtaining, at the control system, a second drilling characteristic associated with a second drilling operation device located apart from the first drilling operation device along the drill string; and controlling, with the control system, at least one adjustable element of the first drilling operation device in response to at least one of the obtained first drilling characteristic and the second drilling characteristic, wherein adjustment of the at least one adjustable element causes a change in at least one of the first drilling characteristic and the second drilling characteristic. 1. A method to adjust a drilling operation , the method comprising:obtaining, at a control system, a first drilling characteristic associated with a first drilling operation device that is part of a drilling system on a drill string;obtaining, at the control system, a second drilling characteristic associated with a second drilling operation device located apart from the first drilling operation device along the drill string; andcontrolling, with the control system, at least one adjustable element of the first drilling operation device in response to at least one of the obtained first drilling characteristic and the second drilling characteristic, wherein adjustment of the at least one adjustable element causes a change in at least one of the first drilling characteristic and the second drilling characteristic.2. The method of claim 1 , wherein the control system comprises at least one controller located downhole claim 1 , the at least one controller configured to at least one of obtain the first drilling characteristic claim 1 , obtain the second drilling characteristic claim 1 , and adjust the at least one adjustable of the first ...

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Номер записи: 78
23-03-2017 дата публикации

DRILLING TOOL

Номер: US20170081923A1
Автор: NAKAMURA Kazuyoshi, Ota Hiroshi
Принадлежит:

The drilling tool includes a circular-cylindrical casing pipe; an annular ring bit disposed at a leading end of the casing pipe so as to be coaxial with the casing pipe and rotatable around a central axis of the casing pipe; and a pilot bi inserted into the casing pipe and has a leading end disposed at an inner peripheral part of the ring bit. The ring bit is engaged with the pilot bit in a rotational direction, and thereby is rotatable integrally with the pilot bit and is locked to the leading end of the pilot bit. Drilling tips are mounted on the leading ends of the pilot bit and the ring bit, and first drilling tips at an outermost periphery of the pilot bit and second drilling tips at an innermost periphery of the ring bit overlap each other in a rotational trajectory around the central axis. 1. A drilling tool comprising:a circular-cylindrical casing pipe;an annular ring bit that is disposed at a leading end of the casing pipe so as to be coaxial with the casing pipe and rotatable around a central axis of the casing pipe; anda pilot bit that is inserted into the casing pipe from a rear end side of the casing pipe and has a leading end disposed at an inner peripheral part of the ring bit, whereinthe ring bit is engaged with the pilot bit in a rotational direction during drilling, and thereby is rotatable integrally with the pilot bit around the central axis and is locked to the leading end of the pilot bit in a direction of the central axis,a plurality of drilling tips are mounted on the leading ends of the pilot bit and the ring bit so as to protrude therefrom, anda first drilling tip positioned at an outermost periphery of the pilot bit and a second drilling tip positioned at an innermost periphery of the ring bit overlap each other in a rotational trajectory around the central axis during drilling.2. The drilling tool according to claim 1 , whereina protruding strip extending in the direction of the central axis is formed at an outer periphery of the leading ...

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Номер записи: 79
02-04-2015 дата публикации

ROLLER CUTTER DRILL BIT WITH MIXED BEARING TYPES

Номер: US20150090501A1
Автор: King William W.
Принадлежит: Varel International Ind., L.P.

A roller cutter drill bit with mixed bearing types includes a bit body with at least one journal facet and a cavity facet. A cavity extends into the bit body from the cavity facet. The bit body is configured to rotate about a bit axis during drilling. A journal extends outward from the at least one journal facet. A first rotatable cutter that supports a first plurality of cutting structures has a journal portion received by the cavity. A second rotatable cutter that supports a second plurality of cutting structures has a cavity portion that is receives the journal. 1. A roller cutter drill bit , comprising:a bit body having at least one journal facet and defining a cavity extending into the bit body from a cavity facet, the bit body configured to rotate about a bit axis during drilling;a journal extending outwardly from the at least one journal facet;a first rotatable cutter supporting a first plurality of cutting structures and having a journal portion received by the cavity; anda second rotatable cutter supporting a second plurality of cutting structures and having a cavity portion receiving the journal.2. The drill bit of wherein the journal extends away from the bit axis.3. The drill bit of wherein the bit body includes a plurality of journals and a plurality of second rotatable cutters each mounted to respective journals.4. The drill bit of wherein a depth of the cavity extends beyond the bit axis.5. The drill bit of wherein:the first rotatable cutter supports a first base row of cutting structures;the second rotatable cutter supports a second base row of cutting structures; andwherein the second base row of cutting structures is disposed closer to the bit axis than the first base row of cutting structures.6. The drill bit of wherein:the first rotatable cutter defines a first axis;the second rotatable cutter defines a second axis; andwherein the first axis, the second axis, and the bit axis converge at a common point.7. The drill bit of wherein the at least one ...

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Номер записи: 80
25-03-2021 дата публикации

Downhole Devices and Associated Apparatus and Methods

Номер: US20210087888A1
Автор: Alastair Henry Walter Macfarlane, Brad IVIE, Matthew Shaw, Rory Mccrae Tulloch
Принадлежит: NOV Downhole Eurasia Ltd

A drill bit for drilling a bore, the drill bit comprising: an outer housing; a primary cutting structure defining a cutting plane of a first diameter; a flow path arranged to let drilling fluid flow through the drill bit; and a deployable blade assembly at least partially located within the outer housing, the deployable blade assembly comprising a cutting structure and being arranged to be axially movable from a first position, in which the deployable cutting structure is recessed with respect to the primary cutting structure, towards the cutting plane, to a second position; wherein when the deployable blade assembly is in the second position, the deployable cutting structure defines a cutting diameter which is less than or equal to the first diameter.

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Номер записи: 81
30-03-2017 дата публикации

Over-Bit Reamer

Номер: US20170089143A1
Автор: Bullock David G., JR. Ronald F., Wright
Принадлежит:

An over-bit backreamer. The backreamer is configured to be placed over a bit without detaching the hit from a drill string associated with a pilot bore. The backreamer has an internal surface that conforms to a steering surface of the hit. Rotation is transferred from the bit to the backreamer at the internal surface. The backreamer further defines a flange which interacts with a feature, such as a heel, on the bit. The flange and heel form a shoulder which transfers pullback force to the bit. The backreamer comprises a pullback eye that pulls a product pipe back through the borehole. 1. A backreamer comprising:a cutting face comprising a plurality of teeth;a body having a longitudinal axis and defining an internal cavity, the body being characterized by an internally disposed keying surface, not orthogonal to the axis, and an opening formed proximate the cutting face; anda pullback eye disposed on the body opposite the cutting face.2. The backreamer of defining a longitudinal axis claim 1 , wherein the keying surface is formed at an angle relative to the longitudinal axis.3. The backreamer of wherein the keying surface is planar.4. The backreamer of further comprising a flange disposed proximate the opening such that the flange has a diameter less than a maximum diameter of the internal cavity.5. The backreamer of wherein the body comprises a first section and a second section claim 1 , wherein the first section and second section are connected by removable connectors and wherein the first section and second section are movable relative to one another when one of the removable connectors is removed.6. The backreamer of further comprising an insert claim 1 , wherein the pullback eye and keying surface are disposed on the insert.7. The backreamer of wherein the opening and internal cavity conform to an external profile of a bit.8. A kit comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the backreamer of ; and'}a bit having an external profile conforming ...

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Номер записи: 82
05-05-2022 дата публикации

Cutting Head and Method for Horizontal Directional Tunneling

Номер: US20220136330A1
Автор: Kirk Charles E.
Принадлежит:

A cutting head has a mounting bracket for attachment to a pipe and a cutter wheel. A double tapered bearing is connected between the mounting bracket and the cutter wheel. The bearing allows the cutter wheel to be rotated without rotation of the pipe. A drive shaft connector on the cutter wheel is connectable to a pilot hole drive shaft for rotating the cutter wheel and pulling it and the pipe. A pilot hole is drilled in a conventional manner. The pipe is attached to the mounting bracket and an end of the pilot hole drive shaft is then connected to the cutter wheel. Simultaneously the pilot hole is enlarged and the pipe and cutter wheel are pulled along the enlarged hole by the drive shaft. The cutter wheel advances along the pilot hole and the pipe is simultaneously advanced through the enlarged hole immediately behind the cutter wheel.

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Номер записи: 83
19-03-2020 дата публикации

BEARING ASSEMBLIES, RELATED BEARING APPARATUSES, AND RELATED METHODS

Номер: US20200087991A1
Автор: Gonzalez Jair J., Kolste Tyler, Pedersen Trond, Peterson S. Barrett
Принадлежит:

Bearing assemblies that include a plurality of polycrystalline diamond (“PCD”) bearing elements, bearing apparatuses including such bearing assemblies, and methods of operating and fabricating such bearing assemblies and apparatuses are disclosed. In an embodiment, the plurality of PCD bearing elements of one or more of the bearing assemblies disclosed herein include at least one first PCD bearing element. At least a portion of the first PCD bearing element exhibits a coercivity of about 125 Oersteds or more and a specific magnetic saturation of about 14 Gauss·cm3/gram or less. The first PCD bearing element includes a bearing surface with at least one groove formed therein. In an embodiment, the plurality of PCD bearing elements also include at least one second PCD bearing element. The second PCD bearing element exhibits a coercivity that is less than and a specific magnetic saturation that is greater than the first PCD bearing element. 1. A bearing assembly , comprising:a plurality of polycrystalline diamond (“PCD”) bearing elements distributed circumferentially about an axis, the plurality of PCD bearing elements including:{'sup': 3', '3, 'at least one first PCD bearing element including a first PCD table, the first PCD table including a first bearing surface and the first bearing surface having at least one groove formed therein, at least a portion of the first PCD table exhibiting at least one of a coercivity of about 125 Oersteds (“Oe”) or more, a specific magnetic saturation of about 14 Gauss·cm/grams (“G·cm/g”) or less, or an electrical conductivity of less than 1200 siemens per meter (“S/m”) and'}at least one second PCD bearing element including a second PCD table, the second PCD table including a second bearing surface, at least a portion of the second PCD table exhibiting at least one of a coercivity that is less than the first PCD table, a specific magnetic saturation that is greater than the first PCD table, or an electrical conductivity that is greater ...

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Номер записи: 84
05-04-2018 дата публикации

DOWNHOLE MILLING CUTTING STRUCTURES

Номер: US20180094496A1
Автор: Burdett Timothy Andrew, Chellappa Sudarsanam, Glass Christopher, Hu Jianbing, Palani Vijayakumar, SU ZHENBI
Принадлежит:

Systems, tools, and methods include using a milling assembly with a mill having multiple, different types of cutting element inserts. A gage region of the mill includes a first type of cutting element insert, and a shoulder region of the mill includes a second type of cutting element insert. One cutting element insert may include chip-breaking features, and the other may be a shear or gouging cutting element. 1. A downhole milling tool , comprising:a drill string;a lead mill at a downhole end portion of the drill string; and a gage region having a first type of cutting element insert; and', 'a shoulder region having a second type of cutting element insert., 'a second mill coupled to the drill string, the second mill being at least one of a dress mill or follow mill, the second mill including2. The downhole milling tool of claim 1 , the first type of cutting element insert including a chip-breaking insert.3. The downhole milling tool of claim 1 , the second type of cutting element insert including a shear cutting insert.4. The downhole milling tool of claim 1 , the second type of cutting element insert including a non-planar cutting insert.5. The downhole milling tool of claim 1 , the second mill including a plurality of blades having fluid recesses therebetween.6. The downhole milling tool of claim 5 , the plurality of blades including at least two blades having a different arrangement of at least one of the first or the second types of cutting element inserts.7. The downhole milling tool of claim 6 , the at least two blades having different axial positions of the second type of cutting element inserts.8. The downhole milling tool of claim 6 , the at least two blades having different rotational orientations of the first type of cutting element inserts.9. The downhole milling tool of claim 1 , the gage region of at least one blade of the second mill having the first type of cutting element inserts at different rotational orientations.10. The downhole milling tool of ...

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Номер записи: 85
06-04-2017 дата публикации

CUTTING ELEMENTS FOR EARTH-BORING TOOLS, EARTH-BORING TOOLS INCLUDING SUCH CUTTING ELEMENTS, AND RELATED METHODS

Номер: US20170096859A1
Автор: Spencer Reed W.
Принадлежит:

A cutting element for an earth-boring tool includes a substrate and a volume of superabrasive material disposed on a substrate. The volume of superabrasive material has an exposed outer surface with a non-planar geometry. The at least one cutting element is configured to be located and oriented on an earth-boring tool so as to remove subterranean earth formation material by compressing and fracturing or plastically deforming the formation material with at least a portion of the exposed outer surface of the volume of superabrasive material during use of the earth-boring tool in an earth-boring operation. The exposed outer surface of the volume of superabrasive material includes a first area having a first average surface finish roughness and a second area having a second average surface finish roughness greater than the first average surface finish roughness. Earth-boring tools carrying such cutting elements and methods of forming such earth-boring tools are also disclosed. 1. An earth-boring tool , comprising:a body; 'a volume of superabrasive material disposed on a substrate, the volume of superabrasive material having an exposed outer surface, the exposed outer surface having a non-planar geometry, wherein the at least one cutting element is located and oriented on the tool body so as to remove subterranean earth formation material by compressing and fracturing or plastically deforming the formation material with at least a portion of the exposed outer surface of the volume of superabrasive material during use of the earth-boring tool in an earth-boring operation, the exposed outer surface of the volume of superabrasive material comprising a first area having a first average surface finish roughness less than 500 nanometers and a second area having a second average surface finish roughness greater than 500 nanometers.', 'at least one cutting element carried by the body, the at least one cutting element comprising2. The earth-boring tool of claim 1 , wherein the ...

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Номер записи: 86
26-03-2020 дата публикации

Configurable ovoid units including adjustable ovoids, earth-boring tools including the same, and related methods

Номер: US20200095831A1
Автор: Ebitimitula Etebu, Steven W. Webb
Принадлежит: Baker Hughes Inc

Configurable ovoid units, earth-boring tools including configurable ovoid units, and related methods are disclosed. An earth-boring tool may include a body including at least one blade. The earth-boring tool may further include a cutting element secured to the at least one blade and including at least one sensor configured to sense at least one condition of the cutting element. Moreover, the earth-boring tool may include at least one configurable ovoid unit disposed at least partially within the at least one blade and comprising an adjustable ovoid head. Additionally, the earth-boring tool may include a control module disposed within the earth-boring drilling tool. The control module may be configured to receive sensor data from the at least one sensor, and to convey at least one signal to the at least one ovoid unit for configuring the at least one ovoid unit in response to the sensor data.

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Номер записи: 87
08-04-2021 дата публикации

SEAL STRUCTURE

Номер: US20210102627A1
Автор: JING Chao, MINAMI Mitsuru, NORIDUKI Yuki, Ueda Akira, Yamamoto Takahiro
Принадлежит:

A seal member is disposed in a seal groove at a sliding gap between a shaft and a case. The seal member includes an outer periphery, a curved inner periphery, a mounting face, and an upper face. The mounting face is recessed toward the upper face. The upper face is recessed toward the mounting face. The relation of 0.755≤h/H≤0.769 is satisfied, where H [mm] denotes the longest length between the mounting face and the upper face and h [mm] denotes the shortest length between the mounting face and the upper face in the direction in which the center line of the seal member extends, in a cross section of the seal member taken along an imaginary plane in parallel with a direction orthogonal to a radial direction of the seal member and passing through the center line of the seal member, 1. A seal structure comprising a ring-shaped seal member disposed in a seal groove provided in a case at a sliding gap between a shaft and the case , the seal member separating a high-pressure side from a low-pressure side , a low-pressure lateral face constituting a lateral face of the seal groove on the low-pressure side, and extending along a direction orthogonal to a shaft axial direction of the shaft in a cross section of the seal structure, the cross section being taken along an imaginary plane in parallel with the shaft axial direction and passing through a center line of the shaft,', 'a groove bottom constituting a bottom face of the seal groove, and extending along the shaft axial direction in the cross section, and', 'a high-pressure lateral face constituting a lateral face of the seal groove on the high-pressure side, and extending along the direction orthogonal to the shaft axial direction in the cross section,, 'the seal groove provided in the case including'} an outer periphery facing the groove bottom,', 'a curved inner periphery facing the shaft and protruding toward the shaft,', 'a mounting face facing the low-pressure lateral face, and', 'an upper face facing the high- ...

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Номер записи: 88
02-04-2020 дата публикации

Prediction of Cutting Size and Shape Generated by a Drill Bit

Номер: US20200102792A1
Автор: Chen Shilin
Принадлежит:

Methods for simulating a downhole drilling operation include estimating the geometry, i.e., the shape, size of cuttings or rock chips generated by engagement of a drill bit with a geologic formation. Each cutting element on the drill bit may produce rock chips of different geometry, and the geometry of rock chips generated by a particular cutting element may change over a predetermined interval. The geometry and other properties rock chips predicted for an interval may be recorded, and a distribution may be calculated based on categorizing each of the predicted rock chips into predefined categories and determining the relative number of rock chips in each category. The distribution may be useful in drill bit design, determining required mud flow characteristics for a drilling operation, and facilitating rotation of a drill string by preventing undesirable interactions of the rock chips with the drill bit, a drill pipe or other downhole equipment. 1. A method of analyzing a downhole drilling operation , the method comprising:generating a model of a borehole extending into a geologic formation;determining a respective position for each of a plurality of cutting elements on a drill bit model;simulating an engagement of the drill bit model with the model of the borehole;calculating a depth of cut associated with each of the cutting elements based on the respective positions of the cutting elements on the drill bit model;generating a rock chip model for each cutting element in response to the depth of cut associated with the cutting element being greater than a critical depth of cut;categorizing each of the rock chip models generated into predefined categories defined according to at least one property of the rock chip models; andcalculating a distribution of the rock chip models among the predefined categories based on the categorizing of the rock chip models by determining a relative number of rock chips in each predefined category.2. The method according to claim 1 , ...

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Номер записи: 89
11-04-2019 дата публикации

HYBRID CUTTING STRUCTURES WITH BLADE UNDULATIONS

Номер: US20190106942A1
Автор: Azar Michael George, McDonough Scott D.
Принадлежит:

A downhole cutting tool may include tool body; a first blade extending from the tool body; a plurality of cutting elements attached to the first blade, the plurality of cutting elements comprising at least two types of cutting elements, wherein the first blade extends from the tool body to a first height adjacent a first type of cutting element and a second height, different from the first height, adjacent a second type of cutting element. 1. A downhole cutting tool , comprising:a tool body;at least one blade extending from the tool body; and a first cutting element oriented in a first orientation, the first cutting element having an ultrahard portion, at least a portion of which is within the at least one blade; and', 'a second cutting element oriented in a second direction that is substantially different than the first orientation, the second cutting element having an ultrahard portion, a full portion of which is elevated from the at least one blade., 'a plurality of cutting elements attached to the at least one blade, the plurality of cutting elements including2. The downhole cutting tool of claim 1 , the at least one blade having a first height adjacent the first cutting element and a second height that is different than the first height claim 1 , adjacent the second cutting element.3. The downhole cutting tool of claim 2 , the first and second heights being measured as a distance between the bit body and a leading edge of the at least one blade.4. The downhole cutting tool of claim 2 , the first and second heights being measured as a distance between the bit body and a formation facing surface of the at least one blade.5. The downhole cutting tool of claim 1 , a surface of the at least one blade adjacent the first cutting element being concave and a surface of the blade adjacent the second cutting element being convex.6. The downhole cutting tool of claim 1 , the plurality of cutting elements defining a composite cutting profile claim 1 , and a formation facing ...

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Номер записи: 90
28-04-2016 дата публикации

FLOW BYPASS COMPENSATOR FOR SEALED BEARING DRILL BITS

Номер: US20160115739A1
Автор: Nguyen Nam Duy
Принадлежит: PDB TOOLS, INC.

An earth boring bit with sealed cutter bearings has lubricant flow passages which extend from an interior cavity of the bit body to spaces located between bearing shafts and rotary cutters. A lubricant compensator has an elongate body defined by a tube which has a first end disposed in one of the flow passages and a second end which extends into the interior cavity. A piston is initially disposed in the second end, biased to apply pressure to lubricant located in the flow passages. The first end has a section for receiving the piston when lubricant is expelled from within the tube. Apertures extend through a sidewall of the tube, spaced apart from the section in the first end and in fluid communication with the flow passages. The apertures, the flow passages, and the spaces located between bearing shafts and rotary cutters are sized for passing drilling fluid. 1. An earth boring bit comprising:a bit body;at least one bearing shaft mounted to the bit body;a cutter mounted for rotation on the bearing shaft, defining a intermediate space located there-between;a seal disposed between the bearing shaft and the rotary cutter for sealing the intermediate space from an exterior of the bit;a flow passage extending through said bit body, from an interior cavity of the bit body to said intermediate space located between the bearing shafts and the rotary cutters;a compensator having a first end disposed in communication with said flow passage and a second end disposed in communication with the interior cavity;at least one aperture extending between an interior of said compensator and said lubricant flow passage; anda moveable seal member disposed in said interior of said compensator for at least initially being disposed in a first position, biased to apply pressure to a lubricant disposed in said flow passage and prevent fluid flow through a flow path extending between said interior cavity of the bit body and said flow passage, and wherein said moveable seal member is disposed ...

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Номер записи: 91
28-04-2016 дата публикации

ROLLER CONE SEAL FAILURE DETECTION USING AN INTEGRATED COMPUTATIONAL ELEMENT

Номер: US20160115740A1
Автор: Chen Shilin, Crawford Micheal Burl
Принадлежит:

A method and apparatus for determining the effectiveness of bearing seals in s roller cone drill bit. The bit includes a sensor in optical communication with the bearing lubricant. The sensor includes a light source, an optical filter, and an optical detector arranged so that light interacts with the lubricant, is filtered, and detected, wherein the detected light is indicative of the amount of contaminant within the lubricant. The optical filter is preferably an integrated computing element that filters preselected orthogonal components from the light. 1. A sensor for measuring a concentration of water within a fluid , comprising:a housing;a window formed in said housing;an optical filter positioned in said housing; andan optical detector positioned in said housing; whereinsaid optical filter and said optical detector are positioned so that light interacting with said fluid passes through said window, through said optical filter, and is received by said optical detector; and whereinsaid optical filter is structured to optically filter a plurality of predetermined orthogonal components of said light therefrom so that a characteristic of the light measured by said optical detector directly relates to the concentration of water within said fluid.2. The sensor of wherein:said fluid includes a lubricant.3. The sensor of wherein:said fluid includes a grease.4. The sensor of further comprising:a light source positioned in said housing so as to emit light to interact with of said fluid.5. The sensor of wherein:said housing is fluid-tight.6. The sensor of wherein:said optical filter includes an integrated computational element.7. A drill bit comprising:a bit body;at least one cutter assembly rotatively coupled to said bit body by a bearing assembly;a reservoir formed in said bit body in fluid communication with said bearing assembly; andan optical sensor positioned in said bit body and in fluid communication with said reservoir, said optical sensor arranged for optically ...

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Номер записи: 92
17-07-2014 дата публикации

High shear roller cone drill bits

Номер: US20140196956A1
Автор: Prabhakaran K. Centala, Zhehua Zhang
Принадлежит: Smith International Inc

A drill bit may include a bit body, comprising: at its upper end, a connection adapted to connect to a drill string; at its lower end, a plurality of journals extending downwardly and radially outward from a longitudinal axis of the bit; a plurality of roller cones rotatable mounted on the plurality of journals; and at least three rows of cutting elements disposed on each of the plurality of roller cones, wherein an outermost row has an extension height to diameter ratio greater than a mid row, and the mid has an extension height to diameter ratio greater than an innermost row.

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Номер записи: 93
18-04-2019 дата публикации

TOOL FOR ROUGHENING A BOREHOLE SURFACE

Номер: US20190112876A1
Автор: LEDERLE Hans-Peter, Ostermeier Peter, POPP Franz, RENNER Markus, Strobel-Schmidt Rainer
Принадлежит: Hilti Aktiengesellschaft

A tool for roughening a borehole surface. The tool includes a coupling portion for clamping the tool in a drilling machine; and a tool head for machining the borehole surface, where the tool head has an outer shell surface on which a cutter protrudes laterally from the shell surface, and where the outer shell surface has a camber along the longitudinal direction of the tool. 1: A tool for roughening a borehole surface , comprising:a coupling portion for clamping the tool in a drilling machine; anda tool head for machining the borehole surface,wherein the tool head has an outer shell surface on which a cutter protrudes laterally from the shell surface, andwherein the outer shell surface has a camber along the longitudinal direction of the tool.2: The tool according to claim 1 , whereinthe outer shell surface has a maximum diameter, which is disposed centrally with respect to the longitudinal extent of the tool head.3: The tool according to claim 1 , whereinthe cutter comprises pins of a cutting material, andwherein the pins are distributed circumferentially with an angular spacing.4: The tool according to claim 3 , whereinthe pins are disposed with an angular spacing with respect to the longitudinal axis of the tool, andwherein the angular spacing is 30° to 180°.5: The tool according to claim 1 , whereinthe maximum diameter of the tool head is smaller than the nominal diameter of a borehole to be machined.6: The tool according to claim 1 , whereinthe coupling portion is disposed at a first end of a tool shank and the tool head at an opposite, second end of the tool shank, andwherein the tool shank has a diameter smaller than that of the tool head.7: The tool according to claim 6 , whereinthe tool shank is at least as long as the tool head in axial direction.8: The tool according to claim 1 , whereinthe axial length of the tool head corresponds to at least nine times the maximum diameter of the tool head.9: The tool according to claim 1 , whereinthe axial length of ...

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Номер записи: 94
13-05-2021 дата публикации

COMBINED CRUSHING SUPER-VARIABLE-DIAMETER DRILL BIT FOR NATURAL GAS HYDRATE EXPLOITATION

Номер: US20210140244A1
Автор: HE Yufa, JING Xin, Li Qingping, Li Xushen, LI Yanjun, Li Zhong, LIU Hexing, Liu Qingyou, Lu Jiang, Tang Yang, WANG Guorong, WANG Leizhen, Zhong Lin, ZHOU Shouwei, ZHU Jianglin
Принадлежит:

The present invention relates to a combined crushing super-variable-diameter drill bit for natural gas hydrate exploitation, including a joint, an outer cylinder connected to the joint by thread, a nozzle I mounted in the outer cylinder, a mechanical locking mechanism, a blade telescoping mechanism, an end cap connected to the outer cylinder by thread, a seal ring IV mounted to the end cap, and a nozzle II mounted in the end cap by threaded connection. The present invention achieves integrated operation of conventional drilling and draw-back expanding, which can effectively solve the problems that the existing hydrate drill bit cannot drill a large borehole, cannot mechanically lock an extending position of the blade to stabilize the size of the borehole, and a single crushing method is inefficient. 11211721321213181322012202203220420320520420620520722072092082. A combined crushing super-variable-diameter drill bit for natural gas hydrate exploitation , comprising: a joint () , an outer cylinder () connected to the joint () by thread , a nozzle I () mounted in the outer cylinder () , a mechanical locking mechanism , a blade telescoping mechanism , an end cap () connected to the outer cylinder () by thread , a seal ring IV () mounted to the end cap () , and a nozzle II () mounted in the end cap () by threaded connection , wherein an upper portion of the outer cylinder () is provided with a seal ring groove I () , a middle-upper portion of the outer cylinder () is provided with a step I () , raised jaws () in three positions are circumferentially distributed in a middle portion of the outer cylinder () , a seal ring groove II () is disposed below the jaws () , nozzle holes I () in three positions are circumferentially disposed below the seal ring groove II () , there are 4 holes in each position , a seal ring groove III () is disposed below the nozzle holes I () , rectangular through holes () in three positions are circumferentially disposed in a middle-lower portion ...

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Номер записи: 95
05-05-2016 дата публикации

Reamer for Use in Drilling Operations

Номер: US20160123085A1
Автор: SHOTWELL DUANE
Принадлежит:

The invention relates to reamers used downhole oil well operations, particularly in reaming while drilling applications. 1. A reamer for use in a downhole environment , comprisingan annular body having a first end, a second end, and an exterior, a first linear tapered section rising from said exterior from a point proximate said first end toward the midpoint of said body,', 'a second linear tapered section rising from said exterior from a point proximate said second end toward the midpoint of said body, wherein each of said first and second linear tapered sections comprise a surface and a longitudinal axis, and', 'a spiral section having a constant radius relative to said body joining said first tapered section to said second tapered section,, 'a plurality of cutting blades on said exterior, each of said blades comprising'}wherein said first linear tapered section and said second linear tapered section comprise a plurality of first cutting inserts, and said spiral section comprises a plurality of second cutting inserts.2. The device of claim 1 , wherein said first cutting inserts comprise polydiamond.3. The device of claim 1 , wherein said first cutting inserts comprise cutting surfaces claim 1 , and wherein said cutting surfaces are angled with respect to the surface of at least one of said first and second tapered sections.4. The device of claim 1 , wherein said first cutting inserts comprise cutting surfaces claim 1 , and wherein said cutting surfaces are angled with respect to the longitudinal axis of at least one of said first and second tapered sections.5. The device of claim 3 , wherein the angle of said cutting surfaces increases relative to the linear distance between said cutting surface and said annular body.6. The device of claim 4 , wherein the angle of said cutting surfaces increases relative to the linear distance between said cutting surface and said annular body.7. The device of claim 3 , wherein the angle of said first cutting inserts are brazed ...

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Номер записи: 96
03-05-2018 дата публикации

SLIDE REAMER AND STABILIZER TOOL

Номер: US20180119495A1
Автор: Harvey Michael James, Rajic Milan, Vacar Jovan
Принадлежит:

A downhole tool, for selectively reaming a wellbore or stabilizing drill string components within a wellbore, includes an elongate tool body adapted to receive reamer cartridges or stabilizer cartridges depending on the function desired. The reamer cartridges are radially insertable into corresponding pockets in the tool body, with each reamer cartridge having a reamer insert with an array of cutting elements. The reamer insert is disposed within a bushing and is rotatable relative thereto, about a rotational axis transverse to the longitudinal axis of the tool. However, the rotational axis is offset from the tool body axis, resulting in eccentric contact of the cutting elements with the wall of the wellbore, which in turn imparts rotation to the reamer insert when the tool is being moved axially through a wellbore without rotation. When the tool is to be used for stabilization, the reamer cartridges can be removed and replaced with stabilizer cartridges having stabilizer inserts with hard-faced stabilizer cones. 124-. (canceled)25. A method of reaming a wellbore , comprising: (a) a longitudinal axis;', '(b) an outer surface; and', '(c) a plurality of channels formed into said outer surface, said channels dividing the main body into a plurality of blade sections corresponding in number to the number of channels;', 'wherein each of at least two of the blade sections has one or more cartridge pockets formed into the outer surface thereof, each cartridge pocket being configured to receive a tool cartridge housing a tool insert such that the tool insert is confined to rotate by a side wall about a rotational axis transverse to, and offset from, the longitudinal axis of the main body, wherein the downhole tool forms a slide reamer and at least one of the tool inserts is a reamer insert having a plurality of cutting elements,', 'the reamer insert rotating as the downhole tool moves axially through the wellbore., 'moving a downhole tool on a drill string axially through a ...

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Номер записи: 97
03-05-2018 дата публикации

Real time drilling monitoring

Номер: US20180119535A1
Автор: Gang Xu, Gregg Alexander, Guishui Zheng, My Lien Ta, Riadh Boualleg, Rongbing Chen, Sujian Huang, Wei Chen, Yuelin Shen
Принадлежит: Schlumberger Technology Corp

A method, system, and computer readable medium for managing drilling operations include calibrating a drilling model using collected drilling data, and executing, during a drilling operation, a simulation on the drilling model to generate a predicted measurement value for a drilling property. During the drilling operation and from a drillstring, an actual measurement value for the drilling property is obtained. Based on the actual measurement value matching the predicted measurement value, the simulation is extended to generate a simulated state of the drilling operation during the drilling operation, and a condition of the drilling operation is detected. A notification may be presented based on the condition during the drilling operation.

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Номер записи: 98
04-05-2017 дата публикации

EXTERNAL, DIVORCED PDC BEARING ASSEMBLIES FOR HYBRID DRILL BITS

Номер: US20170122036A1
Автор: Kulkarni Ajay V.
Принадлежит:

A hybrid-type earth boring drill bit is described having fixed cutting blades and rolling cones with cutting elements, wherein the rolling cones are associated with a spindle assembly that may be optionally divorced from the head pin assembly, and which includes bearing members that further include a plurality of polycrystalline diamond elements. 1. A drill bit , comprising:a bit body having an axis defining an axial center of the bit body, at least one spindle, and at least one fixed blade extending in an axial direction downwardly from the bit body;at least one roller cone mounted on the at least one spindle of the bit body;at least one rolling-cutter cutting element arranged on the roller cone and radially spaced apart from the axial center;a plurality of fixed cutting elements arranged on the at least one fixed blade, at least one of the fixed cutting elements of the plurality of fixed cutting elements being located near the axial center of the bit body and adapted to cut formation at the axial center; anda bearing assembly between the at least one spindle and the at least one roller cone, the bearing assembly comprising a plurality of polycrystalline diamond compact bearing elements.2. A hybrid drill bit for use in drilling through subterranean formations , the hybrid drill bit comprising:a shank having a longitudinal centerline and adapted to be coupled to a drilling string;at least one fixed blade extending from the shank, the at least one fixed blade comprising at least one cutting element extending from a surface of the at least one fixed blade; and a cantilevered bearing shaft extending inwardly toward the longitudinal centerline and downwardly;', 'a roller cone mounted for rotation on the cantilevered bearing shaft, the roller cone adapted to rotate about the cantilevered bearing shaft, the roller cone comprising a plurality of cutting elements extending from an external surface of the roller cone; and', 'a bearing assembly between the cantilevered ...

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Номер записи: 99
25-04-2019 дата публикации

SEALING ELEMENTS FOR ROLLER CONE BITS

Номер: US20190119987A1
Автор: Caraway Douglas Bruce, Crawford Micheal Burl, QIN Shiwei
Принадлежит: Halliburton Energy Services, Inc.

A seal assembly includes a seal groove defined at least partially between a first member and a second member rotatable relative to the first member, an annular sealing element positioned in the seal groove and providing a mud surface, a lubricant surface axially opposite the mud surface, an inner radial surface, and an outer radial surface radially opposite the inner radial surface. One of the inner and outer radial surfaces is a dynamic surface that seals against the first member when the sealing element rotates with the second member, or seals against the second member when the second member rotates relative to the sealing element. A lubricant channel is defined through the sealing element and extending between the lubricant surface and the dynamic surface to provide a lubricant to the dynamic surface. 1. A seal assembly , comprising:a seal groove defined at least partially between a first member and a second member rotatable relative to the first member;an annular sealing element positioned in the seal groove and providing a mud surface, a lubricant surface axially opposite the mud surface, an inner radial surface, and an outer radial surface radially opposite the inner radial surface, wherein one of the inner and outer radial surfaces is a dynamic surface that seals against the first member when the sealing element rotates with the second member, or seals against the second member when the second member rotates relative to the sealing element; anda lubricant channel defined through the sealing element and extending between the lubricant surface and the dynamic surface to provide a lubricant to the dynamic surface.2. The seal assembly of claim 1 , further comprising a lubricant chamber defined between the lubricant surface and a wall of the seal groove claim 1 , wherein the lubricant channel conveys the lubricant from the lubricant chamber directly to a dynamic interface between the dynamic surface and the first member or the second member.3. The seal assembly of ...

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Номер записи: 100