Steerable drilling system

A steerable system comprises a fluid powered motor 10 having a rotor 16 and a stator 18 , and a bias arrangement having a plurality of bias pads 34 connected to the stator 18 so as to be rotatable therewith, the bias pads 34 being moveable to allow the application of a side load to the steerable system.

CONTROLLABLE DEFLECTION HOUSING, DOWNHOLE STEERING ASSEMBLY AND METHOD OF USE

This invention relates to a controllable deflection tool. The controllable deflection tool is likely to have its greatest utility as part of a downhole assembly to steer a drill bit during drilling for oil and gas. There is provided a controllable deflection tool having a first end and a second end, the tool having: a conduit for a working fluid; a rotary element adapted for rotation within the tool; a deflection member; a vane motor configured to rotate the deflection member relative to the rotary element; and a valve for controlling the flow of working fluid to the vane motor. There is also provided a downhole steering assembly and a method of steering a downhole drilling assembly incorporating the controllable deflection tool. 1. A controllable deflection tool having a first end and a second end , the tool having:a conduit for a working fluid;a rotary element adapted for rotation within the tool;a deflection member;a vane motor configured to rotate the deflection member relative to the rotary element; anda valve for controlling the flow of working fluid to the vane motor.2. A controllable deflection tool according to in which the deflection member is a bent housing.3. A controllable deflection tool according to in which the rotary element is an annular sleeve.4. A controllable deflection tool according to in which the annular sleeve surrounds a part of a rotatable shaft.5. A controllable deflection tool according to in which there is a gap between the sleeve and the shaft claim 4 , the gap providing a part of the conduit.6. A controllable deflection tool according to in which the vane motor comprises an eccentric housing within which is located a body carrying at least three vanes claim 1 , the body being connected to the rotary element to rotate with the rotary element claim 1 , the body being rotatable relative to the eccentric housing claim 1 , the vanes being movably mounted upon the body so that they remain in contact with the eccentric housing during ...

MAGNETOSTRICTIVE MOTOR FOR A BOREHOLE ASSEMBLY

A motor includes: a rotor including an undulated surface; a rod disposed about the rotor; and a coil disposed about the rod to induce shape changes in the rod, which in turn impart forces to the undulated surface to rotate the rotor. 1. A motor , comprising:a rotor comprising an undulated surface;a rod disposed about the rotor; anda coil disposed about the rod to induce shape changes in the rod, which in turn impart forces to the undulated surface to rotate the rotor.2. The motor of claim 1 , wherein the undulated surface comprises a symmetrical pattern.3. The motor of claim 1 , wherein the undulated surface comprises a skewed pattern.4. The motor of claim 1 , wherein the forces rotate the rotor in a predetermined direction.5. The motor of claim 1 , wherein the shape changes impart forces to the undulated surface to rotate the rotor in a first direction with a plurality of phases.6. The motor of claim 1 , wherein the shape changes impart forces to the undulated surface to selectively rotate the rotor in one of a first direction and a second direction.7. The motor of claim 1 , wherein the rotor claim 1 , the rod claim 1 , and the coil and the rod assembly are usable in a wellbore.8. A bottom hole assembly claim 1 , comprising:a housing and a shaft disposed therein;a rotor coupled to the shaft and comprising an undulated surface;a magnetostrictive rod disposed in a rod housing about the undulated surface, the magnetostrictive rod having an end disposed adjacent to the undulated surface; anda winding arrangement disposed at least partially about the magnetostrictive rod to induce a series of shape changes in the magnetostrictive rod, wherein the series of shape changes imparts forces to the undulated surface.9. The bottom hole assembly of claim 8 , wherein the shaft is drivingly coupled to a drill bit claim 8 , and the rotor rotates the drill bit.10. The bottom hole assembly of claim 8 , further comprising:an adjustable portion of the housing, wherein the rotor is ...

ROTATION UNIT, ROCK DRILLING UNIT AND METHOD FOR ROCK DRILLING

A rotation unit, rock drilling unit and method for rock drilling. The rotation unit includes a main shaft that is rotated around its longitudinal axis by means of a rotating motor. The main shaft is supported on a body of the rotation device slidingly in the axial direction. This slide property is utilized when connection threads of drilling equipment and drilling components comprised by it are connected. 1. A rotation unit for rock drilling comprising:a body;a main shaft of an elongated piece having a front end with connection means for attaching drilling equipment and an opposite rear end, supported in the body and having at least two bearings rotatable in relation to its longitudinal axis, wherein an outer periphery of the main shaft includes at least one feed flange having axial support surfaces, the body including, at the location of the feed flange, an annular sliding space surrounding the main shaft and having an axial length, wherein the sliding space is defined by an axial front end and a rear end having support surfaces, the support surfaces of the feed flange and sliding space being arranged to transmit axial forces between the body and the main shaft, wherein the feed flange and the sliding space are positioned at the front end of the main shaft;a rotating motor;transmission members for transmitting rotation force from the rotating motor to the main shaft;axial support surfaces for transmitting axial forces between the body and the main shaft in a drilling direction and a return direction;channels for conducting a pressure medium to the main shaft and to the drilling equipment, wherein the main shaft is slidably supported on the body in an axial direction; anda front bearing disposed around the front end of the main shaft in the sliding space, the front bearing being positioned in a portion between the feed flange and the rear end of the sliding space,wherein the front bearing is a slide bearing slidably arranged in the sliding space in the axial ...

Steerable Drilling System

A steerable system comprises a fluid powered motor having a rotor and a stator and a bias arrangement having a plurality of bias pads connected to the stator so as to be rotatable therewith, the bias pads being moveable to allow the application of a side load to the steerable system. 120-. (canceled)21. A steerable drilling system , comprising:a fluid powered motor having a rotor and a stator within a housing, the stator being coupled into a drillstring so as to be rotatable therewith, and a bias arrangement having a plurality of bias pads connected to the stator so as to be rotatable therewith, the bias pads being moveable by a pressure differential between fluid upstream of the fluid powered motor and fluid in a wellbore annulus outside of the fluid powered motor to allow the application of a side load to the steerable system.22. The system as recited in claim 21 , wherein each bias pad is moveable by an actuator.23. The system as recited in claim 22 , wherein each actuator comprises a piston to which fluid can be supplied to move the associated bias pad from a retracted position towards an extended position.24. The system as recited in claim 23 , further comprising a control arrangement for controlling the operation of the actuators.25. The system as recited in claim 24 , wherein the control arrangement includes a plurality of solenoid actuated valves.26. The system as recited in claim 25 , wherein each solenoid actuated valve includes a bistable actuator.27. The system as recited in claim 24 , wherein the control arrangement includes a control unit claim 24 , the motor is used to drive a drill bit claim 24 , and the motor is located between the drill bit and at least part of the control unit.28. The system as recited in claim 27 , wherein the control unit includes at least one sensor arranged to sense a drilling parameter.29. A system claim 27 , comprising: a fluid powered motor disposed along a drillstring and rotatable with the drillstring; and', 'a bias ...

Inverted Wellbore Drilling Motor

An inverted drill motor according to one or more embodiments includes an outer housing rotatable about an internal shaft member whereby rotational speed is imparted to the outer housing in response to fluid flow between the outer housing and the internal shaft member, the outer housing to connect to a drill bit and a top drive shaft portion of the internal shaft member having a top end to connect to the drill string whereby the internal shaft member and the drill string rotate at the same speed. The inverted drill motor may be for example an inverted positive displacement motor or inverted turbodrill. 1. A bottom hole assembly (BHA) , comprising:an upper BHA comprising a drill string;a lower BHA comprising a drill bit; andan inverted drill motor comprising an internal shaft member connected to the upper BHA to rotate in unison with the drill string at a surface rotational speed and an outer housing connected at a bottom end to the lower BHA to rotate in unison with the drill bit at a drill bit rotational speed, wherein the inverted drill motor imparts rotational speed to the drill bit.2. The BHA of claim 1 , wherein the inverted drill motor is an inverted positive displacement motor.3. The BHA of claim 1 , wherein the inverted drill motor is an inverted turbodrill.4. The BHA of claim 1 , wherein the internal shaft member comprises:a top drive shaft having a top end connected to the upper BHA to rotate in unison with the drill string, the top drive shaft rotatably mounted in the outer housing;a power shaft portion extending through an outer rotational member; anda transmission shaft connecting the top drive shaft to the power shaft portion.5. The BHA of claim 4 , wherein the lower BHA comprises a rotary steering device.6. The BHA of claim 4 , further comprising an axial bearing in connection between the power shaft portion and the bottom end of the outer housing.7. The BHA of claim 4 , wherein the inverted drill motor comprises an axial bearing in connection between ...

DOWNHOLE DIRECTIONAL DRILLING ASSEMBLY

The assembly comprise a bent sub (), and optionally a swivel (). The bend angle a of the bent sub in relation to the central axis of the assembly can be adjusted by rotating lower bend member () relative to upper bend member (), which is non-rotatably attached to downhole motor (), using harmonic drive () arranged between lower and upper bend members. In order to adjust the rotational orientation of the bent sub (), a swivel () is provided having upper and lower swivel members (). Upper swivel member can be rotated relative to lower member, which is non-rotatably attached to the downhole motor, using a second harmonic drive () arranged between lower and upper swivel members. 1. A downhole tool assembly , comprising:a first body and a second body arranged to rotate one relative to the other about a rotation axis anda drive arrangement between the first and the second body for rotating the first and the second body relative to each other, wherein the drive arrangement comprises a harmonic drive comprising a wave generator, a flexible gear and an outer gear, wherein one of the wave generator, flexible gear and outer gear is adapted to function as a rotary input component and another of the wave generator, flexible gear and outer gear is adapted to function as a rotary output component; and wherein the downhole tool assembly comprises at least one motor for rotating a component of the downhole tool assembly, wherein the harmonic drive is arranged in a couplable relationship with the motor so that rotation of the motor results in rotation of the first and the second bodies relative to each other.2. A downhole tool assembly as claimed in claim 1 , wherein the remaining one of the wave generator claim 1 , flexible gear and outer gear is adapted to function as a stationary component of the harmonic drive.3. A downhole tool assembly as claimed in claim 1 , wherein the downhole tool arrangement comprises a Bottom Hole Assembly (BHA) wherein at least one of the first and ...

METHODS AND SYSTEMS FOR IMPROVING CONFIDENCE IN AUTOMATED STEERING GUIDANCE

Systems including a plurality of sensors disposed on a bottom hole assembly (BHA) configured to provide data to a controller, wherein a drill bit is connected to a bottom of the BHA; and a controller configured to: receive a well plan; receive, at a first stationary survey station, locational data and directional data of the BHA from the plurality of sensors; create steering instructions based on the well plan, historical drilling data, and the locational and directional data; generate a predicted future position of the drill bit for each of a plurality of stationary survey stations subsequent to the first stationary survey station assuming implementation of the steering instructions; display the predicted future position of the drill bit for each stationary survey station on a graphical user interface; receive directions to implement, reject, or revise the steering instructions; and execute the received directions. Methods and machine-readable media are also included. 1. A system , comprising:a plurality of sensors disposed on a bottom hole assembly (BHA) configured to provide data to a controller, wherein a drill bit is connected to a bottom of the BHA; and{'claim-text': ['receive a well plan;', 'receive, at a first stationary survey station, locational data and directional data of the BHA from the plurality of sensors;', 'create steering instructions based on the well plan, historical drilling data, and the locational data and directional data of the BHA;', 'generate a predicted future position of the drill bit for each of a plurality of stationary survey stations subsequent to the first stationary survey station assuming implementation of the steering instructions;', 'display the predicted future position of the drill bit for each of the plurality of stationary survey stations on a graphical user interface;', 'receive directions to implement, reject, or revise the steering instructions; and', 'execute the received directions.'], '#text': 'a controller configured ...

Directional Drilling Apparatus With An Aligned Housing Bore

A drilling apparatus including a tubular bearing housing, a tilted sleeve removably connected with the bearing housing, and a driveshaft. The bearing housing has a housing axis, a housing bore, and a housing bore axis. The housing bore axis is parallel with the housing axis. The tilted sleeve has a sleeve axis, a sleeve bore, and a sleeve bore axis. The tilted sleeve is connected with the bearing housing and is positioned within the housing bore. The sleeve axis is parallel with the housing bore axis and the sleeve bore axis is oblique to the sleeve axis. The driveshaft is rotatably supported within the sleeve bore. The driveshaft has a driveshaft axis. The driveshaft axis is parallel with the sleeve bore axis. 1. A drilling apparatus comprising:(a) a tubular bearing housing having a housing exterior and defining a housing bore, wherein the housing exterior defines a housing axis, wherein the housing bore has a housing bore axis, and wherein the housing bore axis is parallel with the housing axis;(b) a tilted sleeve removably connected with the bearing housing and positioned within the housing bore, wherein the tilted sleeve has a sleeve exterior and defines a sleeve bore, wherein the sleeve exterior defines a sleeve axis, wherein the sleeve bore has a sleeve bore axis, wherein the sleeve axis is parallel with the housing bore axis, and wherein the sleeve bore axis is oblique to the sleeve axis; and(c) a driveshaft rotatably supported within the sleeve bore, wherein the driveshaft has a driveshaft axis, and wherein the driveshaft axis is parallel with the sleeve bore axis.2. The drilling apparatus as claimed in claim 1 , further comprising a bearing assembly interposed between the tilted sleeve and the driveshaft.3. The drilling apparatus as claimed in wherein an annular space is defined within the sleeve bore between the tilted sleeve and the driveshaft claim 2 , wherein the bearing assembly comprises a plurality of internal bearings claim 2 , and wherein the ...

MULTI-START THREAD CONNECTION FOR DOWNHOLE TOOLS

A wellbore apparatus includes a first component having a first element and a second component having a second element. The first component and the second component are connected by a multi-start thread connection and the first element and the second element being operatively connected to one another. 1. A wellbore apparatus , comprising:a first component having a first element; anda second component having a second element, the first component and the second component being connected by a multi-start thread connection, the first element and the second element being operatively connected to one another.2. The wellbore apparatus of claim 1 , wherein the first element and the second elements are each a segment of a line.3. The wellbore apparatus of claim 2 , wherein the line is configured to convey one of: (i) an optical signal claim 2 , (ii) an electrical signal claim 2 , (iii) an acoustic signal claim 2 , (iv) a fluid claim 2 , (v) energy.4. The wellbore apparatus of claim 1 , further comprising a coupler operatively connecting the first element with the second element.5. The wellbore apparatus of claim 4 , wherein the coupler forms an induction coupling between the first element and the second element.6. The wellbore apparatus of claim 4 , wherein the coupler forms an electromagnetic resonance coupling between the first element and the second element.7. The wellbore apparatus of claim 4 , wherein the coupler forms a capacitive coupling between the first element and the second element.8. The wellbore apparatus of claim 4 , wherein the coupler forms a physical contact between the first element and the second element.9. The apparatus of claim 1 , wherein the first element is one of: a wire claim 1 , a sensor claim 1 , a hydraulic pump claim 1 , a hydraulic line claim 1 , a hydraulic consumer claim 1 , an electrical power generator claim 1 , an electrical power consumer claim 1 , an electromechanic actuator claim 1 , a hydraulic actuator claim 1 , an electric pump claim ...

Steering Assembly Control Valve

Control valves can allow for a steering assembly of a drill string. An exemplary control valve can include a first valve element including a first orifice, the first valve element being movable by actuation by a motor, and a second valve element including an orifice, wherein flow passing through the first valve element orifice passes through the second orifice and into a flow channel to be in fluid communication with a piston bore to exert pressure against a piston movable within the piston bore, the piston being coupled to a steering pad for applying force against the wellbore wall to steer a direction of the drill string. The first valve element is movable with respect to the second valve element to change flow through the first valve element orifice and the second valve element orifice to modify fluid pressure within the flow channel that is exerted against the piston. 1. A control valve for a steering assembly of a drill string , the control valve comprising:a first valve element including an orifice, the first valve element being movable by actuation by a motor; anda second valve element including an orifice, wherein flow passing through the first valve element orifice passes through the second orifice and into a flow channel to be in fluid communication with a piston bore to exert pressure against a piston movable within the piston bore, the piston being coupled to a steering pad for applying force against the wellbore wall to steer a direction of the drill string,wherein the first valve element is movable with respect to the second valve element to change flow through the first valve element orifice and the second valve element orifice to modify fluid pressure within the flow channel that is exerted against the piston, the first and second valve elements being movable relative to each other to increase or decrease flow toward the piston for controlling actuation of the piston.2. The control valve of claim 1 , wherein the first valve element rotates with ...

Activation and Control of Downhole Tools Including a Non-Rotating Power Section Option

A system and method to control fluid flow to downhole tools and equipment, and to allow formation testing and sampling operations is disclosed. The system includes an actuator assembly that may be mechanically or electrically activated to operate a flow diverter assembly. The flow diverter assembly may divert fluid flow to the annulus of the wellbore, to the stator of a power section, through a by-pass bore in a rotor of the power section, or any combination thereof. In the mechanically actuated actuator assembly, the actuator assembly is activated by pressure changes in the fluid introduced by cycling the pumps at the surface; and in the electrically actuated actuator assembly, the actuator assembly is activated by downlinks sent from a surface control unit or computer at the surface. 1. A control device for a downhole tool in a wellbore , the control device comprising:a tubular housing having a first end and a second end with an annulus port in the tubular housing and an internal flow annulus defined in the tubular housing between the annulus port and the second end of the tubular housing;a sleeve disposed within the housing between the port and the first end of the tubular housing, the sleeve having a first end, a second end, an outer surface having a groove formed therein, wherein the sleeve is axially and rotatably moveable relative to the tubular housing;a flow diverter assembly interconnected with the sleeve, the flow diverter assembly disposed within the tubular housing between the sleeve and the second end of the tubular housing, the flow diverter assembly movable between a first position and a second position, wherein the flow diverter is in fluid communication with the annulus port in one position and in fluid communication with the internal flow annulus in the other position, a follower having a pin extending into the groove of the sleeve, the follower fixed relative to axial and rotational movement of the sleeve, wherein the sleeve is movable relative ...

DYNAMIC INWARDLY ECCENTRICALLY-PLACED DIRECTIONAL DRILL BIT TYPE ROTATION GUIDANCE APPARATUS

Disclosed is a rotation guidance apparatus belonging to the technical field of oil drilling equipment. An end part of a lower connector () has a ball-socketed ball-joint rod (), and a drill bit () is connected to the ball-socketed ball-joint rod (); several circumferentially and evenly distributed piston holes are provided in a side wall of the lower connector (), a piston matches each piston hole, and a piston rod () connected to the piston is movably connected to the ball-socketed ball-joint rod (); and a eccentrically-placed valve core () is connected to a controller provided in an upper connector (), a working face of the eccentrically-placed valve core () is opposite to the piston holes, and rotation of the eccentrically-placed valve core () makes the pistons in the piston holes move to control the rotation guidance of the ball-socketed ball-joint rod (). 1. A rotation guidance apparatus , comprisingan upper connector and a lower connector which are connected to each other, wherein an end part of the lower connector has a ball-socketed ball-joint rod,a drill bit which is connected to the ball-socketed ball-joint rod;several circumferentially evenly distributed piston holes that are provided in a side wall of the lower connector,a piston which matches each of the piston holes,a piston rod connected to the piston being movably connected to the ball-socketed ball-joint rod;an eccentrically-placed valve core connected to a controller provided in the upper connector, a working face of the eccentrically-placed valve core being opposite to the piston holes, wherein rotation of the eccentrically-placed valve core makes the pistons in the piston holes move to control the rotation guidance of the ball-socketed ball-joint rod.2. The rotation guidance device of claim 1 , wherein the eccentrically-placed valve core is of an analogous conical structure claim 1 , a cone surface of the eccentrically-placed valve core is provided with a concave part and a convex part claim 1 , ...

Mud Operated Rotary Steerable System with Rolling Housing

A directional drilling device for drilling a borehole having a borehole wall, the device including an outer housing and a driveshaft selectively rotatable with respect to the housing and including an axial flow bore and a through port formed in the driveshaft wall. The device also includes one or more borehole engagement members rotatable with and radially moveable with respect to the outer housing toward engagement with the borehole wall to urge the directional drilling device in a radial direction with respect to the borehole. The device further includes a mud pressure actuation system. The mud pressure actuation system controls fluid flow through the through port to control hydraulic pressure on a piston device and thus movement of the borehole engagement members into engagement with the borehole wall to maintain a rotational position of the outer housing and the corresponding radial direction in which the device is being urged. 1. A directional drilling device for drilling a borehole having a borehole wall , the directional drilling device comprising:an outer housing;a driveshaft located at least partially within and selectively rotatable with respect to the housing, the driveshaft comprising a driveshaft wall defining an axial flow bore and a through port formed in the driveshaft wall;one or more borehole engagement members rotatable with and also radially moveable with respect to the outer housing toward engagement with the borehole wall to urge the directional drilling device in a radial direction with respect to the borehole;a mud pressure actuation system comprising a piston device selectively hydraulically coupled to the axial flow bore via the through port and mechanically coupled to the borehole engagement members; andwherein the mud pressure actuation system is configured to control fluid flow through the through port to control hydraulic pressure on the piston device and thus movement of the borehole engagement members into engagement with the borehole ...

DEVICES AND SYSTEMS FOR REDUCING CYCLICAL TORQUE ON DIRECTIONAL DRILLING ACTUATORS

An actuator for use in a directional steering assembly includes an ultrahard insert positioned on a working face. The ultrahard insert is positioned along at least a portion of the perimeter of the working face. The ultrahard insert has a coefficient of friction less than a material of the remainder of the working face. 1. An actuator , comprising:a working face oriented radially away from a rotational axis, the working face having a perimeter with a downhole edge and a leading edge, the working face including a first surface and a second surface, wherein the working face has an ultrahard insert, the ultrahard insert being on at least a portion of the working face and at least a portion of the perimeter.2. The actuator of claim 1 , wherein the ultrahard insert covers greater than 25% of the perimeter of the working face.3. The actuator of claim 1 , wherein the ultrahard insert is polycrystalline diamond.4. The actuator of claim 1 , wherein the ultrahard insert is fixed on the working face by a mechanical connection with an actuator body.5. The actuator of claim 1 , wherein the ultrahard insert is located at least partially on a downhole edge of the working face.6. The actuator of claim 1 , wherein the ultrahard insert is located at least partially on a leading edge of the working face.7. The actuator of claim 1 , wherein the ultrahard insert is located on a downhole edge and a leading edge of the working face.8. An actuator claim 1 , comprisingan actuator body; and a downhole edge and a leading edge,', 'a first surface and a second surface, and', 'a first material and a second material., 'a working face, wherein the working face is located on the actuator body radially away from a rotational axis, the working face having9. The actuator of claim 8 , wherein the first surface has a profile in a longitudinal direction that is parallel to the rotational axis and is located farther from the downhole edge relative to the second surface claim 8 , and the second surface ...

FLOW CONTROL MODULE FOR A ROTARY STEERABLE DRILLING ASSEMBLY

Directional control of a rotary steerable drilling assembly can be facilitated by a flow control module for maintaining a geostationary position or orientation of components of the assembly. The drilling assembly can include a bit shaft and an offset mandrel for adjusting a longitudinal axis of the bit shaft. A drive mechanism can rotate the offset mandrel independently of the bit shaft to maintain the offset mandrel in a geostationary position or orientation relative to a formation of the earth and/or a wellbore. A flow control module controllably directs a fluid flow to the drive mechanism. The flow control module can include an inner body and an outer body, defining an annulus there between and one or more blades within the annulus, each of the blades being rotatable to provide a range of angles with respect to a longitudinal axis of the flow control module. 1. A flow control module , comprising:an inner body and an outer body, defining an annulus there between;one or more blades within the annulus, each of the blades being rotatable to provide a range of angles with respect to a longitudinal axis of the flow control module;wherein an outer edge of each of the blades maintains a constant distance to an inner surface of the outer body across the range of angles;wherein an inner edge of each of the blades maintains a constant distance to an outer surface of the inner body across the range of angles.2. The flow control module of claim 1 , wherein the outer edge and the inner surface are flat; and wherein the inner edge and the outer surface are flat.3. The flow control module of claim 1 , wherein each of the outer edge claim 1 , the inner surface claim 1 , the inner edge claim 1 , and the outer surface are parallel to the longitudinal axis.4. The flow control module of claim 1 , wherein the outer edge is concave and the inner surface is convex claim 1 , or the outer edge is convex and the inner surface is concave.5. The flow control module of claim 1 , wherein the ...

Active alternator control in a downhole tool string

A downhole system includes a drill string having a drilling fluid flow channel and at least one turbine alternator deployed in the flow channel. The turbine alternator is configured to convert flowing drilling fluid to electrical power. A voltage bus is configured to receive electrical power from the turbine alternator and at least one electrical motor is configured to receive electrical power from the voltage bus. An electronic controller is configured to provide active control of the turbine alternator via processing a desired speed of the electrical motor to generate a desired torque current and feeding the desired torque current forward to the turbine alternator. The turbine alternator is responsive to the desired torque current such that it modifies the electrical power provided to the voltage bus in response to the desired torque.

DOWNHOLE TOOLS WITH TAPERED ACTUATORS HAVING REDUCED CYCLICAL TORQUE

A downhole tool includes a tool body and an actuator coupled to and selectively extendible relative to the tool body. The actuator has a working face that contacts a downhole formation, and which includes an upper portion and a lower portion. The lower portion has a tapered surface that is directed radially inwardly and axially downwardly relative to the first portion, with at least a portion of the tapered surface including an ultrahard material having a different coefficient of friction as compared to a first material of the upper portion. 1. A downhole tool , comprising:a tool body; and an upper portion including a first material; and', 'a lower portion, the lower portion including a tapered surface that is directed radially inwardly and axially downwardly relative to the first portion, wherein at least a portion of the tapered surface includes an ultrahard material having a different coefficient of friction than the first material., 'an actuator coupled to and selectively extendible relative to the tool body, the actuator including a working face arranged and designed to contact a downhole formation, the working face including2. The downhole tool of claim 1 , the ultrahard material being located on one or more of a perimeter or leading edge of the lower portion.3. The downhole tool of claim 1 , wherein the ultrahard material is part of an ultrahard insert coupled to the first material.4. The downhole tool of claim 1 , wherein the ultrahard material is on at least 25% of working surface.5. The downhole tool of claim 1 , wherein the ultrahard material is on at least 50% of the tapered surface and at least a portion of the upper portion.6. The downhole tool of claim 1 , wherein the ultrahard material includes polycrystalline diamond.7. The downhole tool of claim 1 , wherein the ultrahard material is on at least a portion of a downhole edge of the lower portion.8. The downhole tool of claim 1 , wherein the tapered surface makes up a full surface of the lower portion ...

Horizontal directional drilling system

The present disclosure provides a drilling machine configuration and related method that avoids drilling mud from contaminating hydraulic fluid that flows through the drive system of the machine. The disclosed system and method provides a drilling mud anti-contamination system that requires infrequent service and a system wherein the service can be quickly and easily performed.

ACTIVE ALTERNATOR CONTROL IN A DOWNHOLE TOOL STRING

A downhole system includes a drill string having a drilling fluid flow channel and at least one turbine alternator deployed in the flow channel. The turbine alternator is configured to convert flowing drilling fluid to electrical power. A voltage bus is configured to receive electrical power from the turbine alternator and at least one electrical motor is configured to receive electrical power from the voltage bus. An electronic controller is configured to provide active control of the turbine alternator via processing a desired speed of the electrical motor to generate a desired torque current and feeding the desired torque current forward to the turbine alternator. The turbine alternator is responsive to the desired torque current such that it modifies the electrical power provided to the voltage bus in response to the desired torque. 120-. (canceled)21. A downhole system , comprising:a turbine alternator configured to convert flowing drilling fluid to electrical power; and process a desired speed of the at least one electrical motor to generate a desired torque current; and', 'feed the desired torque current forward to the turbine alternator, wherein the turbine alternator is responsive to the desired torque current such that it modifies the electrical power converted by the turbine alternator in response to the desired torque current., 'an electronic controller configured to provide active control of the turbine alternator, wherein the electronic controller is configured to22. The system of claim 21 , wherein the electronic controller is further configured to:generate a demand current by processing a difference between an actual voltage and a desired voltage; andcombine the demand current and the desired torque current to obtain a command torque current, wherein the turbine alternator is responsive to the command torque current such that an output DC voltage is substantially independent of a flow rate of the flowing drilling fluid.23. The system of claim 21 , ...

Variable Build Motor

A variable build motor downhole tool allows changing the build rate in a directional drilling operation without pulling the drill string from the hole and replacing a fixed build sub in the drill string. A pad can be extended upon command to increase the build rate and retracted upon command to decrease the build rate. The pad is mounted on an insert disposed within an outer housing and extends outwardly through the outer housing by action of one or more pistons. Electronics housed in the variable build motor tool are used to receive commands from uphole and cause the pistons to extend, forcing the pad outward to increase the build rate. 1. A downhole tool for use in directional drilling , comprising:an outer housing having an opening; a piston; and', 'a pad disposed radially outward of the piston, wherein extension of the piston urges the pad outward through the opening of the outer housing for engagement with a wellbore and increasing build rate while drilling;', 'an electric motor, configured to cause extension of the piston; and', 'circuitry configured to control the electric motor upon receipt of a command received from uphole., 'an insert disposed within the outer housing, comprising2. The downhole tool of claim 1 , wherein the pad extends outward by rotating about a hinge.3. The downhole tool of claim 1 , wherein the insert further comprises:a stop configuring a maximum extension of the pad.4. The downhole tool of claim 1 , wherein the insert further comprises:an oil chamber filled with oil,wherein the electric motor allows oil pressure in the oil chamber to increase, responsive to the command, andwherein the piston urges the pad outward responsive to increased pressure in the oil chamber.5. The downhole tool of claim 4 , wherein the insert further comprises:a ball screw assembly, driven by the electric motor; anda sealing piston configured to seal the oil chamber, driven by the ball screw assembly.6. The downhole tool of claim 1 , wherein the insert further ...

CHAIN SERVICE INDICATOR

An injector head unit includes one or more drive chains revolving within a common plane mounted on an upper drive sprocket and a lower drive sprocket, wherein at least one of the upper and lower drive sprockets are configured to move vertically to tension the drive chains, and at least one fixed reference point proximate to at least one of the upper and lower drive sprockets, wherein relative positioning of one of the movable upper and lower drive sprockets with the fixed reference point indicates to a user an amount of elongation of the drive chains after a certain period of time. 1. An injector head unit comprising:one or more drive chains revolving within a common plane mounted on an upper drive sprocket and a lower drive sprocket, wherein at least one of the upper and lower drive sprockets are configured to move vertically to tension the drive chains; andat least one fixed reference point proximate to at least one of the upper and lower drive sprockets,wherein relative positioning of one of the movable upper and lower drive sprockets with the fixed reference point indicates to a user an amount of elongation of the drive chains after a certain period of time.2. The injector head unit of claim 1 , further comprising a movable bearing housing associated with one of the upper and lower drive sprockets.3. The injector head unit of claim 2 , further comprising a cylinder coupled with the movable bearing housing that tensions the drive chains.4. The injector head unit of claim 1 , further comprising a movable shaft extending through one of the upper and lower drive sprockets claim 1 , wherein ends of the shaft are mounted within an elongated slot to move vertically.5. The injector head unit of claim 1 , wherein the at least one fixed reference point indicates a percentage elongation of the drive chains relative to an original drive chain length.6. The injector head unit of claim 1 , wherein one of the upper and lower drive sprockets is concentrically mounted on a ...

SYSTEM AND METHOD FOR DOWNLINK COMMUNICATION

A method may include communicating a command into a wellbore from the surface. The method may include determining a command to be sent to a downhole tool, and translating the command into a message, the message including a sequence of codes. The method may include rotating the drill string substantially at the set point RPM for a predetermined duration and measuring the rotation rate of the drill string. The method may include identifying the received set point RPM and rotating the drill string consistent with a first code value of a first code of the message as encoded. The method may also include decoding the first code and rotating the drill string consistent with a second code value of a second code of the message as encoded. The method may also include decoding the second code, identifying the command from at least one of the decoded first and second code and executing the command. 1. A method for communicating a command into a wellbore from the surface comprising:providing a downhole tool, the downhole tool coupled to a drill string, the drill string rotated by a top drive at the surface, the downhole tool including a downhole decoder and a drill string rotation rate sensor, the top drive controlled by a rotation controller;determining a command to be sent to the downhole tool;translating the command into a message, the message including a sequence of codes;selecting a set point RPM;encoding the message based on a predetermined encoding scheme, each code of the sequence of codes of the message encoded onto an RPM value, the RPM value offset from the set point RPM, or duration of a drill string rotation step;rotating the drill string substantially at the set point RPM for a predetermined duration;measuring the rotation rate of the drill string;determining by the downhole decoder that the rotation rate of the drill string remains generally constant for the predetermined duration to determine if a set point RPM has been received;identifying the received set point ...

DUAL TORQUE TRANSFER FOR TOP DRIVE SYSTEM

A method and apparatus for a drive unit of a top drive system including a first, second, and third drive gears that are operationally coupled; a motor engagable with the first drive gear; a drive stem having a load coupling and engagable with the second drive gear; and a torque shaft having a torque coupling and engagable with the third drive gear. The drive stem cannot engage with the second drive gear when the torque shaft is engaged with the third drive gear. A method of coupling a drive unit to a tool adapter includes engaging a first drive gear with a motor of the drive unit while engaging a second drive gear with a drive stem of the drive unit; coupling a load between the drive stem and a tool stem of the tool adapter; and coupling a torque between a torque shaft of the drive unit and the tool stem. 1. A drive unit of a top drive system comprising:a first, second, and third drive gears, wherein the first, second, and third drive gears are operationally coupled;a motor engagable with the first drive gear;a drive stem having a load coupling and engagable with the second drive gear; anda torque shaft having a torque coupling and engagable with the third drive gear, wherein the drive stem cannot engage with the second drive gear when the torque shaft is engaged with the third drive gear, and vice versa.2. The drive unit of claim 1 , wherein the first claim 1 , second claim 1 , and third drive gears are axially aligned on a common shaft.3. The drive unit of claim 1 , wherein the load coupling is a threaded coupling and the torque coupling is a key coupling.4. The drive unit of claim 1 , further comprising a shift actuator coupled to the first claim 1 , second claim 1 , and third drive gears claim 1 , wherein the shift actuator is configured to move the first claim 1 , second claim 1 , and third drive gears between:an upper position wherein the second drive gear engages with the drive stem, anda lower position wherein the third drive gear engages with the torque ...

STEERING A DRILL BIT WITH A ROTARY VALVE

A rotary valve can include a housing, a manifold with multiple flow paths can be fixedly mounted to the housing. A rotary actuator with a first surface can be rotatably mounted within the housing, and a valve seat with a second surface can be fixedly attached to the manifold, where the second surface can sealingly engage the first surface. The rotary actuator can include a gap that selectively aligns with respective ones of valve seat ports as the rotary actuator rotates relative to the valve seat, thereby selectively pressurizing one or more actuators. A system and method can include a rotary valve that selectively causes pads to extend at a predetermined orientation in the wellbore to steer a drill bit. The azimuthal orientation of a rotary actuator of the valve can determine which pads are extended and which are retracted as the drill bit rotates. 1. A rotary valve comprising:a valve housing;a manifold mounted to the valve housing, with the manifold having multiple flow paths;a rotary actuator rotatably mounted within the valve housing, with the rotary actuator having a first engagement surface;a valve seat coupled to the manifold, the valve seat having a second engagement surface that sealingly engages the first engagement surface;the valve seat further comprising ports that are in fluid communication with respective ones of the flow paths in the manifold; andthe rotary actuator further comprising a gap that selectively aligns and miss-aligns with respective ones of the valve seat ports as the rotary actuator rotates relative to the valve seat.2. The valve of claim 1 , wherein the valve housing further comprises inlet ports through a wall of the valve housing that allows pressurized fluid to enter the rotary valve.3. The valve of claim 1 , wherein the valve seat ports include a drain port disposed in the center of the valve seat claim 1 , and at least first and second ports spaced radially outward from the drain port and circumferentially spaced around the drain ...

ROTARY STEERABLE TOOL WITH DUMP VALVE

A rotary steerable tool for directional drilling includes a tool body including an outer surface and a flowbore therethrough, a pad movably coupled to the tool body and alternately movable between an extended position and a retracted position, and a piston engageable with the pad to move the pad. The tool further includes a pressurized fluid supply flow path to provide fluid pressure to the piston for the piston to controllably move the pad to the extended position, and a dump valve in fluid communication with the pressurized fluid supply flow path to selectively vent fluid pressure to allow the pad to move from the extended position toward the retracted position. 1. A rotary steerable tool for directional drilling , comprising:a tool body including an outer surface and a flowbore therethrough;a pad movably coupled to the tool body and alternately movable between an extended position and a retracted position;a piston engageable with the pad to move the pad;a pressurized fluid supply flow path to provide fluid pressure to the piston for the piston to controllably move the pad to the extended position; anda dump valve in fluid communication with the pressurized fluid supply flow path to selectively vent fluid pressure to allow the pad to move from the extended position toward the retracted position.2. The tool of claim 1 , wherein the piston is coupled to the pad such that the piston moves with the pad from the extended position to the retracted position.3. The tool of claim 1 , wherein the dump valve selectively vents fluid pressure from the pressurized fluid supply flow path to out of the tool body.4. The tool of claim 3 , wherein the dump valve selectively vents fluid pressure to the outer surface of the tool body.5. The tool of claim 3 , wherein the dump valve selectively vents fluid pressure to the flowbore.6. The tool of claim 1 , further comprising a rotary valve in fluid communication with the pressurized fluid supply flow path to selectively control fluid ...

Dynamic Point-the-bit Rotary Steerable Drilling Tool and Measuring Method Thereof

The invention relates to a dynamic point-the-bit rotary steerable drilling tool and a measuring method thereof. The dynamic point-the-bit rotary steerable drilling tool comprises a rotary housing, a stabilized platform assembly, a hollow servo-motor assembly, a drilling fluid passage, an inner eccentric ring, an outer eccentric ring, a drilling bit shaft and a universal joint. The dynamic point-the-bit rotary steerable drilling tool also comprises a stabilized platform communication and power supply system which includes an instrument storehouse fixed at the upper end of the rotary housing, a main circuit board, an auxiliary circuit board mounted on the stabilized platform upper-end cover, an electromagnetic coupler primary-side, an electromagnetic coupler secondary winding and an electromagnetic coupler primary-side mounting plate fixed at the lower end of a coupler. The main circuit board is mounted on the electromagnetic coupler primary-side mounting plate, the electromagnetic coupler secondary winding is connected with the auxiliary circuit board, and the auxiliary circuit board is connected with the attitude sensor mounted on the side wall of the upper end of the stabilized platform body. By the dynamic point-the-bit rotary steerable drilling tool, hollow drilling fluid passage, power supply and signal transmission of the stabilized platform sensor, attitude angle parameter measurement and toolface angle real-time control of the rotary steerable drilling tool are realized. 1193716183175383710191211101212161510720192427122613141524141327273010261326191310. A dynamic point-the-bit rotary steerable drilling tool , comprising a rotary housing () , a stabilized platform assembly () , a hollow servo-motor assembly () , a drilling fluid passage () , an inner eccentric ring () , an outer eccentric ring () , a drilling bit shaft () and a universal joint (). The stabilized platform assembly () comprises a stabilized platform body () mounted in the rotary housing () and a ...

A HYBRID ROTARY GUIDING DEVICE

A hybrid rotary guiding device, includes: rotating shaft, the rotating shaft is used to drive the head of a drill tool to rotate, the rotating shaft includes an upper shaft portion, a lower shaft portion, and a steerable portion, a separation distance exists between the upper shaft portion and the lower shaft portion in the axial direction, the upper shaft portion and the lower shaft portion are steerably connected by the steerable portion; the upper shaft portion is installed with at least three first hydraulic mechanisms, and the lower shaft portion is installed with at least three second hydraulic mechanisms, the second hydraulic mechanism is adapted to drive a pushing member against the wall of the well to guide the head of a drill tool, the first hydraulic mechanism and the second hydraulic mechanism are configured so that the first hydraulic mechanism can drive the second hydraulic mechanism to drive the pushing member. The present invention combines the advantages of directional and push-oriented guidance, the influence of formation properties on the build-up slope is largely eliminated, a higher build rate can be provided, and the demand for energy consumption is greatly reduced. 1. A hybrid rotary guiding device , wherein comprising:rotating shaft, the rotating shaft is used to drive a tool head to rotate, the rotating shaft includes an upper shaft portion, a lower shaft portion, and a steerable portion, a separation distance exists between the upper shaft portion and the lower shaft portion in the axial direction, the upper shaft portion and the lower shaft portion are steerably connected by the steerable portion;the upper shaft portion is installed with at least three first hydraulic mechanisms, and the lower shaft portion is installed with at least three second hydraulic mechanisms, the second hydraulic mechanism is adapted to drive a pushing member against the wall of the well to guide the tool head, the first hydraulic mechanism and the second ...

DIRECTIONAL DRILLING USING A ROTATING HOUSING AND A SELECTIVELY OFFSETABLE DRIVE SHAFT

Example systems described herein may include a housing and an offsetable drive shaft coupled to a drill bit and at least partially disposed within the housing The offset angle of the offsetable drive shaft may determine an angle of the drill bit face. A motor may be coupled to the housing that, when activated, independently rotates the housing By independently counter-rotating the housing relative to a drill string during drilling operations, the angular orientation of the offsetable drive shaft and drill bit may remain geo-stationary with respect to the surrounding formation, without requiring that the housing engage a borehole wall. 1. A system for controlling the direction of a drilling assembly within a borehole , comprising:a tool collar;a housing positioned proximate an end and at least partially outside of the tool collar;an offsetable drive shaft coupled to a drill bit and at least partially disposed within the housing; anda motor coupled to the housing, wherein the motor, when activated, independently rotates the housing.2. The system of claim 1 , wherein:the offsetable drive shaft is coupled to the tool collar.3. The system of claim 2 , wherein the motor is disposed within one of the tool collar and the tool housing.4. The system of claim 1 , wherein the motor comprises one of an electric motor and a hydraulic motor.5. The system of claim 2 , wherein the tool collar is coupled to a drill string such that when the drill string is rotated in a first direction with a first speed claim 2 , the tool collar and the offsetable drive shaft rotate in the first direction with the first speed.6. The system of claim 5 , wherein the motor claim 5 , when activated claim 5 , independently rotates the housing by at least rotating the housing in a second direction opposite the first direction with a second speed the same as the first speed.7. The system of claim 1 , wherein an offset angle of the offsetable drive shaft is maintained within the housing.8. The system of ...

DOWNHOLE DRILLING ASSEMBLY WITH MOTOR POWERED HAMMER AND METHOD OF USING SAME

A drilling assembly assembly includes a hammer motor, a shaft, a driver, and a hammer (). The shaft is operatively connectable to the hammer motor and rotated thereby. The driver is operatively connectable to the shaft, and includes a cam (such as guide channel ) rotatable with the shaft and a fixed guide (such as guide pins ) having a guide surface thereon. The cam is engageable with the guide surface and axially movable thereabout during rotation thereof. The hammer is operatively connectable to the driver and axially movable therewith, axially movable within the housing () independently from axial movement of the housing, and engageable with the bit to impart an impact thereto whereby the bit is hammered. 1. A drilling assembly of a downhole drilling tool for drilling a wellbore penetrating a subterranean formation , the downhole drilling tool driven by surface equipment and comprising a drill string , a bottom hole assembly , and a drill bit , the drilling assembly comprising:a housing positionable about the bottom hole assembly;a hammer motor positionable in the housing and rotationally driven by fluid flow therethrough;a shaft operatively connectable to the hammer motor and rotatably thereby;a driver operatively connectable to the shaft, the driver comprising a cam rotatable with the shaft and a guide having a guide surface thereon, the cam engageable with the guide surface and axially movable thereabout during rotation thereof; anda hammer operatively connectable to the driver and axially movable therewith, the hammer axially movable within the housing independently from axial movement of the housing, the hammer engageable with the bit to impart an impact thereto whereby the bit is hammered.2. The drilling assembly of claim 1 , further comprising a nozzle positionable in the housing to selectively restrict flow of fluid therethrough.3. The drilling assembly of claim 2 , wherein the hammer has a passage therethrough claim 2 , the nozzle positionable about the ...

Steering System For Use With A Drill String

A drill string steering system includes a flow manifold and a rotary valve. An actuation flow channel and a backflow channel are rotatable with respect to piston flow channels of the flow manifold. The actuation flow channel is rotatable relative to the flow manifold to increase or decrease flow toward the piston for controlling actuation of the piston. The backflow channel is rotatable relative to the flow manifold to increase or decrease flow away from the piston to the annulus for controlling retraction of the piston. 1. A flow manifold for facilitating steering of a drill string , the flow manifold comprising:a body having a rotational axis and including a plurality of bypass flow channels, a plurality of piston flow channels, and an exhaust channel, the plurality of bypass flow channels extending through the body and being positioned at a first radial distance from the rotational axis, the plurality of piston flow channels extending through the body and being positioned at a second radial distance from the rotational axis, the first radial distance being greater than the second radial distance, the plurality of bypass flow channels and the exhaust channel permitting flow through the cylindrical body to a location downhole of the flow manifold, wherein each of the plurality of piston flow channels is fluidly communicated with a piston bore for actuating a piston to steer a direction of the drill string, and the exhaust channel is in fluid communication with an annulus.2. The flow manifold of claim 1 , further comprising a valve seat formed onto an uphole face of the cylindrical body claim 1 , the valve seat including a plurality of cut-outs corresponding to the plurality of piston flow channels claim 1 , wherein a central cut-out of the plurality of cut-outs corresponds to the exhaust channel.3. The flow manifold of claim 1 , wherein the body is cylindrical in shape claim 1 , and the exhaust channel comprises a central axis that is coaxial with the rotational ...

AUTOMATED DIRECTIONAL DRILLING SYSTEM AND METHOD USING STEERABLE DRILLING MOTORS

A method for drilling a well includes orienting a steerable drilling motor at a selected toolface angle. The steerable drilling motor is connected by a drill string to a surface drilling location. The drill string is automatically rotated at the surface location in a first direction for a first predetermined time interval. 1. A method for drilling a well , comprising:orienting a steerable drilling motor at a selected toolface angle, the steerable drilling motor being connected by a drill string to a surface drilling location; andautomatically rotating the drill string at the surface location in a first direction for a first predetermined time interval:2. The method of further comprising automatically reversing direction of rotation of the drill string at the surface location at the end of the first predetermined time interval claim 1 , the reversed rotation continuing for a second predetermined time interval.3. The method of further comprising adjusting at least one of the first and second predetermined time intervals to move a neutral point by a selected longitudinal distance along the drill string.4. The method of wherein the first and second predetermined time intervals are adjusted to maintain a value of at least one drilling operating parameter.5. The method of wherein the at least one drilling operating parameter comprises a rate of penetration of the drill string into subsurface formations and a differential pressure across the steerable drilling motor.6. The method of further comprising measuring torque applied to the drill string at the surface location and automatically rotating the drill string in the first direction until a first measured torque value is reached.7. The method of further comprising automatically reversing rotation of the drill string at the first location and continuing rotation in the reversed direction until a second measured torque value is reached.8. The method of further comprising switching selection of direction of rotation of the ...

Vertical Shaft Drilling Rig Using Novel Drilling Method

A vertical shaft drilling rig using a novel drilling method, mainly comprising a derrick () and a mouth sealing flatcar () installed at the wellhead, and further comprising a drilling pipe (), a pipe joint (), a steady pressure device (), a torque amplification driver (), a cutter head (), a muck removal system (), a slurry treatment station (), an electrical cabinet (), a hydraulic station (), and a power pipeline (); a main drive () is mounted on the derrick; the lower part of the main drive is connected to the drilling pipe; the drilling pipe is provided with the pipe joint, the lower end of the drilling pipe is connected to the torque amplification driver; the lower end of the torque amplification driver is connected to the cutter head; the steady pressure device is mounted outside the torque amplification device; the slag dug up by the cutter head in the shaft is delivered to the slurry treatment station on the surface. The drilling rig improves overall stability, increases pressure of the device and drilling torque, and provides more accurate guidance, thus improving efficiency of vertical shaft construction, shortening the period of vertical shaft construction and improving the quality of the completed well. 1. A vertical shaft drilling rig with novel drilling method which mainly comprises a derrick installed on a pithead and a flat car for covering said opening , wherein said rig further comprises a drill pipe , a pipe joint , a device for stabilizing cutterhead pressure , a torque amplification driver , a cutter head , a muck removal system , a separate plant , an electric cabinet , a hydraulic station and a power line , characterized in that , said derrick comprises a main driver , wherein said main driver has a bottom portion connecting to said drill pipe , said pipe joint is provided on said drill pipe , said drill pipe has a bottom portion connected to said device for stabilizing cutterhead pressure , said torque amplification driver has a bottom ...

FLUID OPERATED DRILLING DEVICE AND A METHOD FOR DRILLING A HOLE USING A FLUID OPERATED DRILLING DEVICE

A fluid operated drilling device for drilling a hole said device having a hammer, a rotation device and a drill rod. The hammer includes a tubular main body, a back head, a cylindrical piston housing, a reciprocating piston, a space, a valve unit and a fluid pressure supply unit. A hollow portion of the piston is open to lead pressurized operating fluid directly to the hollow portion from the fluid pressure supply passage. The hammer includes an axial exhaust passage formed between the main body and the piston housing. The valve unit includes a valve exhaust passage and the piston has a lower part and an upper part detachably connected to each other. The invention also relates to a method for drilling a hole using the fluid operated drilling device. 1. A fluid operated drilling device for drilling a hole the drilling device comprising:a hammer for creating the hole with a rotating and percussive motion;a rotation device for rotating the hammer; anda drill rod connecting the rotation device to the hammer and transporting operating pressurized drill fluid to the hammer for creating the percussive motion of the hammer, the hammer comprising:a tubular main body having a hollow interior;a back head, for connecting the hammer to the drill rod, coupled to an upper end of the main body and having a fluid pressure supply passage;a cylindrical piston housing connected to the main body inside the main body;a reciprocating piston slidably installed in the piston housing, for impacting a drill bit of a bit unit installed at a lower end of the main body, the drill bit being movable for a predetermined length longitudinally relative to the main body, the piston having; a first end and a second end, the first end being closer to the drill rod, a lower part and an upper part detachably connected to each other, a hollow portion, a first communication hole connected to the hollow portion and an annular pressurizing portion protruding on an outer circumferential surface; of the piston, ...

Device for sinking oil, gas or geothermal wells

FIELD: mining, drilling wells of different application. SUBSTANCE: device includes core barrel installed on drill rod string with drive on well mouth, and crown installed on the core barrel, and mud motor placed coaxially in the space of the core barrel. The motor has casing, stator and rotor with central drilling tool secured to rotor shaft. Motor casing is fixed from rotation around core barrel. Motor casing is installed in the core barrel to form ring clearance between for flushing fluid, and may be axially moved along the connection made in the form of prismatic keys. The connection is made on the motor casing and core barrel. Mud motor is spring loaded about core barrel towards drill rod string. Ring bead may be provided on inner surface of the core barrel above motor casing to form annular flow limiter slot between the bead and motor casing upper butt. The cross section area changes depends on mutual position of core barrel and mud motor. The device may be provided with overrunning clutch installed between the central drill tool and core barrel so as to be moved about the central drill tool and/or closing as rotation frequency of the central drill toll decreases to rotation frequency of the core barrel. EFFECT: high capacity. 2 cl, 3 dwg Е9ЭзЗс90Сс ПЧ ГЭ (19) РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ ВИ "” 2 062 861” Сл (51) МПК Е 21 В 4/02, 7/28 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 93058191/03, 03.04.1992 (30) Приоритет: 12.04.1991 ЕК 9104824 (46) Дата публикации: 27.06.1996 (56) Ссылки: Патент США № 4862974, кл. 175-61, 1989. (86) Заявка РСТ: ЕР 92/00771 (03.04.92) (71) Заявитель: Андре Леруа[ВЕ] (72) Изобретатель: Андре Леруа[ВЕ] (73) Патентообладатель: Андре Леруа[ВЕ] (54) УСТРОЙСТВО ДЛЯ БУРЕНИЯ НЕФТЯНЫХ, ГАЗОВЫХ ИЛИ ГЕОТЕРМАЛЬНЫХ СКВАЖИН (57) Реферат: Использование: в горной промышленности для бурения скважин различного назначения. Сущность изобретения: устройство включает установленную на колонне буровых ...

Rammbohrgerät

Guided mole

Boring apparatus for forming a generally horizontal underground passage in soil for a utility conduit or the like that includes a tool head with a base portion and a nose portion mounted on the base portion. The base portion is rotatable relative to the nose portion between a first position in which nose portion surfaces are symmetrical with respect to the tool axis so that the tool will move along a straight path and a second position in which nose portion surfaces are in asymmetrical position with respect to the tool axis so that said tool will move along a curved path. By application of torque to the base portion, the base portion is shifted relative to the nose portion to shift the tool head from between an asymmetrical configuration and symmetrical configuration. Torque generating surface structure interacts with the soil and generates clockwise torque in one tool head position and counter clockwise torque in the other tool head position.

Motor Driven Hybrid Rotary Steerable System

Abstract of Disclosure A bottom hole assembly is rotatably adapted for drilling directional boreholes into an earthen formation. It has an upper stabilizer mounted to a collar, and a rotary steerable system. The rotary steerable system has integral drilling motor, an upper section connected to the collar, a steering section, and a drill bit arranged for drilling the borehole attached to the steering section. The steering section is joined at a swivel with the upper section. The steering section is actively tilted about the swivel. A lower stabilizer is mounted upon one of the upper section or the steering section such that the swivel is intermediate the drill bit and the lower stabilizer.

Device for control of drill bit

Предлагается устройство для управления буровым долотом на конце бурильной колонны внутри буровой скважины для избирательного осуществления бурения вдоль либо криволинейной траектории, либо по существу прямолинейной траектории, которое содержит первый расположенный в скважине двигательный блок, соединенный с буровым долотом и который может вращать буровое долото с целью осуществления операции бурения, причем двигательный блок предназначен для наклонения под каким-то углом оси вращения бурового долота относительно оси сечения сооружаемой в данный момент буровой скважины, и второй также расположенный в скважине двигательный блок, который соединяет первый двигательный блок с бурильной колонной и который может вращать первый двигательный блок. Кроме этого, устройство содержит также блокирующий переходник, который может избирательно срабатывать с целью осуществления вращения бурового долота с помощью первого двигательного блока в момент, когда первый двигательный блок удерживается в заданной осевой ориентации, чтобы выполнять операцию бурения буровой скважины вдоль криволинейной траектории по направлению наклона бурового долота, или с целью осуществления вращения бурового долота первым двигательным блоком в момент, когда первый двигательный блок вращается вторым двигательным блоком, чтобы осуществить бурение буровой скважины вдоль прямолинейной траектории. Для осуществления бурения в любом режиме не предусматривается обязательное вращение бурильной колонны как единого целого.

自动控制的旋转可控钻井系统及钻井方法

用于定向钻井的自动控制旋转可控向钻井系统,其有钻井时由钻杆转动的钻具套管,钻头杆支撑钻头并有位于套管内的上部分和从套管延伸的下端。钻头杆由套管内万向节可全向转动地支撑在上、下端之间,并由套管驱动。用偏移心轴使钻杆绕万向节转动控制转动钻头的方向。由钻井液驱动的涡轮机与交流发电机相结合驱动电动机。电动机使偏移心轴转动并由位置检测元件信号输入伺服控制。用制动器使偏移心轴和钻头杆轴线保持对地静止。或把涡轮机连到偏移心轴,使偏移心轴相对于钻具套管转动。

Guided drilling system

FIELD: oil-and-gas production. SUBSTANCE: proposed system comprises borehole assembly 18 including top section 22 and control section 24. Shackle 26 extends through top section to adjust axis of control section 24 relative to that of top section 22. Borehole motor allows driving control section 24 via said shackle relative to top section 22. Set of drives 23 to control orientation of control section axis relative to top section axis is mounted on one of said control section 24 and top section 22. High-speed sliding contact is arranged between drives 34 and another section of control section 24 and top section 22. EFFECT: simple and efficient configuration. 22 cl, 5 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 452 839 (13) C2 (51) МПК E21B 7/08 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2010130479/03, 16.12.2008 (24) Дата начала отсчета срока действия патента: 16.12.2008 (73) Патентообладатель(и): ШЛЮМБЕРГЕР ТЕКНОЛОДЖИ Б.В. (NL) R U Приоритет(ы): (30) Конвенционный приоритет: 21.12.2007 GB 0724900.6 (72) Автор(ы): ДАУНТОН Джеффри К. (US) (43) Дата публикации заявки: 27.01.2012 Бюл. № 3 2 4 5 2 8 3 9 (45) Опубликовано: 10.06.2012 Бюл. № 16 (56) Список документов, цитированных в отчете о поиске: US 3667556 A, 06.06.1972. SU 1016469 A, 07.05.1983. RU 94035985 A1, 27.07.1996. RU 2229012 C2, 20.05.2004. US 5529133 A, 25.12.1996. 2 4 5 2 8 3 9 R U (86) Заявка PCT: US 2008/086987 (16.12.2008) C 2 C 2 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 21.07.2010 (87) Публикация заявки РСТ: WO 2009/085753 (09.07.2009) Адрес для переписки: 129090, Москва, ул.Б.Спасская, 25, стр.3, ООО "Юридическая фирма Городисский и Партнеры", пат.пов. А.В.Мицу, рег.№ 364 (54) СИСТЕМА ДЛЯ НАПРАВЛЕННОГО БУРЕНИЯ (57) Реферат: Изобретение относится к нефтегазовой промышленности, а именно к системе, предназначенной для направленного бурения. Содержит компоновку (18) низа буровой колонны, включающую в себя верхнюю ...

Actively controlled rotary steerable system and method for drilling wells

An actively controlled rotary steerable drilling system for directional drilling of wells having a tool collar rotated by a drill string during well drilling. A bit shaft has an upper portion within the tool collar and a lower end extending from the collar and supporting a drill bit. The bit shaft is omni-directionally pivotally supported intermediate its upper and lower ends by a universal joint within the collar and is rotatably driven by the collar. To achieve controlled steering of the rotating drill bit, orientation of the bit shaft relative to the tool collar is sensed and the bit shaft is maintained geostationary and selectively axially inclined relative to the tool collar during drill string rotation by rotating it about the universal joint by an offsetting mandrel that is rotated counter to collar rotation and at the same frequency of rotation. An electric motor provides rotation to the offsetting mandrel with respect to the tool collar and is servo-controlled by signal input from position sensing elements such as magnetometers, gyroscopic sensors, and accelerometers which provide real time position signals to the motor control. In addition, when necessary, a brake is used to maintain the offsetting mandrel and the bit shaft axis geostationary. Alternatively, a turbine is connected to the offsetting mandrel to provide rotation to the offsetting mandrel with respect to the tool collar and a brake is used to servo-control the turbine by signal input from position sensors.

Steering Systems for Coiled Tubing Drilling

A technique provides a drilling system and method in which a drilling assembly is delivered downhole on coiled tubing. The drilling assembly comprises a drill bit and a motor to rotate the drill bit for drilling of a borehole. A steerable system is used to steer the drill bit, thereby enabling formation of deviated boreholes.

Apparatus for directional boring under mixed conditions

A drill head for an apparatus for horizontal directional drilling. The drill head includes a device for detecting angular orientation, a holder for the device for detecting angular orientation, the device for detecting angular orientation being disposed therein, a hammer driven by a liquid and a drill bit. The holder, the hammer and the drill bit are connected head to tail along a longitudinal axis of a drill string with the holder at a proximate end of the drill head and the drill bit at a distal end of the drill head.

System of drilling deviated wellbores

Directional drilling is carried out with a rotary drilling tool having a drill string, a drill bit, a drill motor for rotating the drill bit independently of the drill string, and a bent sub affixed between the lower end of the drill string and the drill motor for angularly displacing the axis of rotation of the drill bit from the axis of rotation of the drill string. Both the drill string and drill bit are rotated to provide a straight path for the wellbore, while only the drill bit is rotated during the deviation of the wellbore from a straight path.

Method of drilling deviated wellbores

Directional drilling is carried out with a rotary drilling tool having a drill string, a drill bit, a drill motor for rotating the drill bit independently of the drill string, an extension sub having both axially contracted and axially extended positions for providing weight to the drill bit when moving from a contracted to an extended position so as to effect a drilling stroke by the drill bit into the wellbore bottom when drilling with the drill bit independently of rotation of the drill string, and a measuring-while-drilling unit acting in conjunction with spiral-bladed stabilizers for effecting proper orientation of the drill bit prior to each drilling stroke.

System for directional drilling and related method of use

A system for directional drilling and related method of use is described herein which utilizes a drillstring suspended within a wellbore with an MWD and downhole turbine or motor connected adjacent a drill bit on a lower end of the drillstring, and with a top drive and/or rotary table connected adjacent an upper end of the drillstring. Within the method, desired limits of drilling associated parameters are inputted into a memory associated with a programmable digital computer. While drilling the wellbore, transmitted values of the drilling associated parameters are inputted into the memory. If the transmitted values are outsude of the desired limits, necessary adjustments are calculated and then made to weight-on-bit (WOB), RPM and/or drillstring azimuthal orientation to bring the transmitted values within the desired limits.

Steer systems for coiled tubing drilling and method of use

A technique provides a drilling system and method in which a drilling assembly is delivered downhole on coiled tubing. The drilling assembly comprises a drill bit and a motor to rotate the drill bit for drilling of a borehole. A steerable system is used to steer the drill bit, thereby enabling formation of deviated boreholes.

Controllable deflection housing, downhole steering assembly and method of use

This invention relates to a controllable deflection tool. The controllable deflection tool is likely to have its greatest utility as part of a downhole assembly to steer a drill bit during drilling for oil and gas. There is provided a controllable deflection tool having a first end and a second end, the tool having: a conduit for a working fluid; a rotary element adapted for rotation within the tool; a deflection member; a vane motor configured to rotate the deflection member relative to the rotary element; and a valve for controlling the flow of working fluid to the vane motor. There is also provided a downhole steering assembly and a method of steering a downhole drilling assembly incorporating the controllable deflection tool.

Reduced-length measure while drilling apparatus using electric field short range data transmission

Apparatus and system for reducing cyclic torque on directional drilling actuators

一种用于在定向转向组件中使用的执行器，包括超硬插入物，所述超硬插入物安置在工作面上。所述超硬插入物沿着所述工作面的周长的至少一部分安置。所述超硬插入物具有小于所述工作面的剩余部分的材料的摩擦系数。

System for aiding operation of excavating type underground adrancing machine

내용없음. None.

Device for drilling directional holes

The boring direction of the mining machine is controlled at the section of drilling rod immediately behind the cutting head by inclination transducers (14), mounted at 90 degree intervals round the drilling rod. The control orientation of the rotating shaft (3) inside the outer casing of the drilling rod (9) by hydraulic actuators (10,11) moving the shaft, relative to the casing, round pivots (8). Hydraulic pressure is obtained from an eccentric (23) mounted on the shaft which operates a pump (23) to deliver pressurised hydraulic fluid to a storage chamber (20) before delivery to the hydraulic actuators (10,11) via magnetic control valves (16,17) controlled by the inclination transducers (14). The electric supply to these transducers and valves may be from a battery or from an electric generator mounted externally or internally to the drilling rod.

OIL, GAS OR GEOTHERMAL DRILLING APPARATUS.

Oil, gas or geothermal drilling apparatus

An oil, gas or geothermal drilling apparatus comprising a central tool and a drill bit coaxial therewith, wherein said central tool is driven by the rotor of a downhole motor supplied with drilling mud, and wherein the drill bit is driven from the surface by the string of a drill-pipe in a rotary system, with said string causing a thrust load in said apparatus. Between the stator (4) of the downhole motor and the foot (5) of the drill bit there is a prismatic linkage allowing relative axial movement of the tools, and a spring (6) is placed between the stator (4) and the foot (5) so as to be stressed by the stator when the central tool's advancing movement falls behind that of the drill bit, whereby the relative axial movement of the two tools can be controlled and the thrust load to which the apparatus is subject can be shared out between them according to said movement. The apparatus may be used in the drilling equipment industry, particularly for oil, gas or geothermal drilling.

Petroleum, gas or geothermal driling apparatus

The invention relates to a petroleum, gas or geothermal drilling apparatus comprising a central tool and a coaxial bit, wherein the central tool is driven by the rotor of a bottom engine which is fed by the drilling mud and wherein the bit is driven from the surface by the rods of a drill gear which is part of a rotary system, these same rods subjecting the apparatus to an axial load. It is characterized in that there is a prismatic connection between the stator (4) of the bottom engine and the base (5) of the bit, which allows the relative axial displacement of the two tools, and that a spring (6) is interposed between the stator (4) and the base (5) in such a way as to form a constraint on the stator when the central tool tends to fall behind in respect to the bit during their respective forward movements, so as to control the relative axial displacement of the two tools and to distribute between them, as a function of the displacement, the axial load to which the apparatus is subjected. Used in the drilling material industry, namely for petroleum, gas or geothermal drilling.

Oil, gas or geothermal drilling apparatus

An oil, gas or geothermal drilling apparatus comprising a central tool and a drill bit coaxial therewith, wherein said central tool is driven by the rotor of a downhole motor supplied with drilling mud, and wherein the drill bit is driven from the surface by the string of a drill-pipe in a rotary system, with said string causing a thrust load in said apparatus. Between the stator (4) of the downhole motor and the foot (5) of the drill bit there is a prismatic linkage allowing relative axial movement of the tools, and a spring (6) is placed between the stator (4) and the foot (5) so as to be stressed by the stator when the central tool's advancing movement falls behind that of the drill bit, whereby the relative axial movement of the two tools can be controlled and the thrust load to which the apparatus is subject can be shared out between them according to said movement. The apparatus may be used in the drilling equipment industry, particularly for oil, gas or geothermal drilling.

Oil, gas or geothermal drilling apparatus

L'objet de l'invention est un appareil de forage pétrolier, gazier ou géothermiq ue comportant un outil central et un trépan coaxiaux dans lequel l'outil central es t entraîné par le rotor d'un moteur de fond alimenté par la boue de forage et dans lequel l e trépan est entraîné, depuis la surface, par les tiges d'un train de forage appartenant à un système rotary, ces mêmes tiges soumettant l'appareil à un effort axial. Il est caractér isé en ce que, entre le stator (4) du moteur de fond et l'embase (5) du trépan, existe un liaison pri smatique qui permet le déplacement axial relatif des deux outils et en ce qu'un ressort (6) e st interposé entre le stator (4) et l'embase (5) de manière à être contraint par le stator qu and l'outil central tend à prendre du retard par rapport au trépan dans leurs mouvements d'avance respectifs, afin de contrôler l e déplacement axial relatif des deux outils et de répartir entre eux, en fonction de ce déplacement, l'effort axial auquel l'appar eil est soumis. Application à l'industrie du matériel de forage notamment pétrolier, gazier ou géothermique.

DEVICE FOR PETROLEUM, NATURAL GAS OR GEOTHERMAL HOLES

Tool for drilling petroleum, gas or geothermal wells

A drilling assembly for drilling holes in subsurface formations

Down-hole motor and method for directional drilling of boreholes

Downhole drilling assembly, apparatus and method utilizing drilling motor and stabilizer

A downhole drilling apparatus for use with an undergauge drill bit comprises a downhole drilling motor which includes a housing and means for rotating the drill bit relative to the housing about an axis of rotation. The apparatus also comprises stabilizers connected to the housing for stabilizing the drill bit, and it further comprises cutters connected to the housing for cutting a borehole wall created by passage of the drill bit, wherein the cutters extend radially outwardly relative to the axis of rotation to a greater extent than does the drill bit. A drilling assembly including such a drilling apparatus and a method of drilling a substantially vertical borehole in an earthen formation utilizing such an apparatus are also disclosed.

DEVICE FOR PETROLEUM, NATURAL GAS OR GEOTHERMAL HOLES

Oil, gas or geothermal drilling apparatus

The subject of the invention is an oil, gas or geothermal drilling rig comprising a central tool and a coaxial bit in which the central tool is driven

PETROLEUM AND GAS DRILLING OR GEOTHERMIC EXPLORATIONS

Drilling tools for petroleum and gas or geothermal exploration

Oil, gas or geothermal drilling apparatus.

L'objet de l'invention est un appareil de forage pétrolier, gazier ou géothermique comportant un outil central et un trépan coaxiaux dans lequel l'outil central est entraîné par le rotor d'un moteur de fond alimenté par la boue de forage et dans lequel le trépan est entraîné, depuis la surface, par les tiges d'un train de forage appartenant à un système rotary, ces mêmes tiges soumettant l'appareil à un effort axial. Il est caractérisé en ce que, entre le stator (4) du moteur de fond et l'embase (5) du trépan, existe une liaison prismatique qui permet le déplacement axial relatif des deux outils et en ce qu'un ressort (6) est interposé entre le stator (4) et l'embase (5) de manière à être contraint par le stator quand l'outil central tend à prendre du retard par rapport au trépan dans leurs mouvements d'avance respectifs, afin de contrôler le déplacement axial relatif des deux outils et de répartir entre eux, en fonction de ce déplacement, l'effort axial auquel l'appareil est soumis. Application à l'industrie du matériel de forage notamment pétrolier, gazier ou géothermique. The object of the invention is an oil, gas or geothermal drilling apparatus comprising a central tool and a coaxial bit in which the central tool is driven by the rotor of a downhole motor fed by the drilling mud and in in which the bit is driven, from the surface, by the rods of a drill string belonging to a rotary system, these same rods subjecting the device to an axial force. It is characterized in that, between the stator (4) of the downhole motor and the base (5) of the bit, there is a prismatic connection which allows the relative axial displacement of the two tools and in that a spring (6) is interposed between the stator (4) and the base (5) so as to be constrained by the stator when the central tool tends to lag behind the bit in their respective advance movements, in order to control the displacement axial relative of the two ...

OIL, GAS OR GEOTHERMAL DRILLING APPARATUS.

An oil, gas or geothermal drilling apparatus comprising a central tool and a drill bit coaxial therewith, wherein said central tool is driven by the rotor of a downhole motor supplied with drilling mud, and wherein the drill bit is driven from the surface by the string of a drill-pipe in a rotary system, with said string causing a thrust load in said apparatus. Between the stator (4) of the downhole motor and the foot (5) of the drill bit there is a prismatic linkage allowing relative axial movement of the tools, and a spring (6) is placed between the stator (4) and the foot (5) so as to be stressed by the stator when the central tool's advancing movement falls behind that of the drill bit, whereby the relative axial movement of the two tools can be controlled and the thrust load to which the apparatus is subject can be shared out between them according to said movement. The apparatus may be used in the drilling equipment industry, particularly for oil, gas or geothermal drilling.

Method and means for controlling the course of a bore hole

A B S T R A C T METHOD AND MEANS FOR CONTROLLING THE COURSE OF A BORE HOLE The invention relates to a method and means for con-trolling the course of a bore hole during drilling thereof. The means comprises a down-hole motor and at least two stabilizers mounted on the housing of the down-hole motor wherein at least one of said stabilizers is mounted eccentrically on the motor housing. Controlling the course of a bore hole that is being drilled with the down-hole motor driving the drill bit is done by successively not rotating the drill string and rotating the drill string.

Drilling rig

Предметом изобретени   вл етс  бурова  установка, в частности, дл  бурени  шпуров с расположенным на переднем конце бурильной трубы погружным бурильным молотком приводимым в действие гидравликой . Привод 2 дл  бурильной трубы передает на нее возвратно-поступательное поворотное движение с углом поворота предпочтительно 180-360°. Бурильные штанги 7 оснащены двум  открытыми наружу продольными каналами дл  размещени  гидравлических шлангов 10,11 дл  подвода и отвода к погружному бурильному молотку нагнетаемого масла, а также трубопроводом дл  пневматической закладки. Кроме того, предусмотрено приспособление 9 дл  заправки и удалени  шлангов, которое рас

Optimized drill string rotation during directional drilling in the sliding mode

Группа изобретений относится к способу управления вращением и к устройству для вращения бурильной колонны. Технический результат заключается в преодолении статического трения с наименьшим потреблением энергии. Согласно способу управления вращением бурильной колонны, присоединенной к буровому долоту внутри ствола, определяют угловую скорость по меньшей мере части бурильной колонны, определяют пороговое значение угловой скорости для предотвращения статического трения, определяют минимальный входной крутящий момент для приложения к бурильной колонне для поддержания угловой скорости на пороговом значении угловой скорости или выше него, после чего генерируют управляющий сигнал для двигателя верхнего привода по меньшей мере частично на основании минимального входного крутящего момента. 2 н. и 18 з.п. ф-лы, 6 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 616 053 C1 (51) МПК E21B 44/04 (2006.01) E21B 7/06 (2006.01) E21B 4/20 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ФОРМУЛА (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ 2015153301, 30.08.2013 (24) Дата начала отсчета срока действия патента: 30.08.2013 (72) Автор(ы): ДИКСТРА Джейсон Д. (US), САН Чжицзе (US) 12.04.2017 Приоритет(ы): (22) Дата подачи заявки: 30.08.2013 (56) Список документов, цитированных в отчете о поиске: WO 2007/129120 A1, 15.11.2007. RU (85) Дата начала рассмотрения заявки PCT на национальной фазе: 14.12.2015 (86) Заявка PCT: US 2013/057689 (30.08.2013) (87) Публикация заявки PCT: Адрес для переписки: 197101, Санкт-Петербург, а/я 128, "АРСПАТЕНТ", М.В. Хмара R U 2 6 1 6 0 5 3 (54) ОПТИМИЗИРОВАННОЕ ВРАЩЕНИЕ БУРИЛЬНОЙ КОЛОННЫ ВО ВРЕМЯ НАКЛОННОНАПРАВЛЕННОГО БУРЕНИЯ В СКОЛЬЗЯЩЕМ РЕЖИМЕ (57) Формула изобретения 1. Способ управления вращением бурильной колонны, присоединенной к буровому долоту внутри ствола, согласно которому: определяют угловую скорость по меньшей мере части бурильной колонны; определяют пороговое значение угловой скорости для предотвращения статического ...

DEEP DRILLING DEVICE

Controlled directional drilling with use of periodic disturbing action on drilling bit

FIELD: mining. SUBSTANCE: device for controlled directional drilling of the well includes bent sub and disturbing action device containing element which provides axial and azimuth components of the force that acts on drilling bit. At that, drilling column and the above disturbing action device are in-line connected to drilling bit and bring it into action irrespective of rotation of drilling column. At that, disturbing action device changes the operation of drilling bit from time to time and thus diverts the trajectory of the well in the required direction. Method of the well deviation with the use of the above device and arrangement of the bottom of drilling column including the above device for controlled directional drilling is also described. EFFECT: improvement of reliability and efficiency of operation of the device for controlled directional drilling. 18 cl, 8 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 428 554 (13) C1 (51) МПК E21B 7/08 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2009145914/03, 11.12.2009 (24) Дата начала отсчета срока действия патента: 11.12.2009 (45) Опубликовано: 10.09.2011 Бюл. № 25 2 4 2 8 5 5 4 R U (54) УПРАВЛЕНИЕ НАКЛОННО НАПРАВЛЕННЫМ БУРЕНИЕМ С ИСПОЛЬЗОВАНИЕМ ПЕРИОДИЧЕСКОГО ВОЗМУЩАЮЩЕГО ВОЗДЕЙСТВИЯ НА БУРОВОЕ ДОЛОТО (57) Реферат: Предложенная группа изобретений относится к наклонно направленному бурению скважин, в частности к устройству и способу направленного бурения. Техническим результатом является повышение надежности и эффективности работы устройства для наклонно направленного бурения. Устройство для направленного бурения скважины содержит кривой переводник и устройство возмущающего воздействия, содержащее элемент, обеспечивающий осевые и азимутальные составляющие силы, воздействующей на буровое долото. При этом бурильная колонна и упомянутое устройство возмущающего воздействия оперативно соединены с буровым долотом и приводят его в ...

Percussive machine

A percussive tool comprises a percussion mechanism and a pressure pulser. The percussion mechanism has a hollow housing with a piston hammer arranged thereinside to form two chambers of variable volume. The pressure pulser has a hollow housing and a fluid displacer defining inside the housing a working chamber adapted to alternately communicate with a source of gaseous fluid and the interior of the percussion mechanism. The fluid displacer is intended for forced displacement inside the housing to transmit to the chambers of the percussion mechanism a pulsed pressure of the gaseous fluid which causes the piston hammer to reciprocate. The interior of the percussion mechanism is isolated from the outside, whereas the working chamber of the pressure pulser communicates with at least one of the chambers of the percussion mechanism, the chambers of the percussion mechanism continuously intercommunicating by way of a restrictor passage.

Apparatus for directional boring under mixed conditions

A drill head for an apparatus for horizontal directional drilling. The drill head includes a device for detecting angular orientation, a holder for the device for detecting angular orientation, the device for detecting angular orientation being disposed therein, a hammer driven by a liquid and a drill bit. The holder, the hammer and the drill bit are connected head to tail along a longitudinal axis of a drill string with the holder at a proximate end of the drill head and the drill bit at a distal end of the drill head.

Pneumatic down-the-hole drill

공압식 다운-더-홀 드릴은, 프레임 (21), 공압식 타격 피스톤 (24), 가압된 공기를 DTH-드릴로 이송하는 이송 채널, 및 충격 이동을 제공하기 위하여 압축된 공기를 제어하는 프레임 (21) 의 그리고 타격 피스톤 (24) 에 있는 숄더부들 (shoulders) 을 구비하고, 상기 타격 피스톤 (24) 은 가압된 공기가 DTH-드릴로 이송되는 때에 왕복 방식으로 이동하고 프레임 (21) 의 전방 단부에 있고 프레임 (21) 의 길이 방향으로 이동가능하게 장착된 공구를 타격한다. 프레임 (21) 의 후방 단부에서, 다운-더-홀 드릴은 연소 챔버 (26), 가속 피스톤 (25), 상기 연소 챔버 (26) 로 연소 공기 및 연료를 이송하는 수단을 포함하고, 상기 가속 피스톤 (25) 은 타격 피스톤 (24) 이동의 일부만을 위한 충격 이동 중에 타격 피스톤 (24) 을 밀어내도록 배치되고, 타격 피스톤 (24) 은, 충격 이후에 가속 피스톤 (25) 을 상기 연소 챔버 (26) 로 밀어내고 상기 연소 챔버 (26) 로 연료를 이송하기 이전에 상기 연소 챔버 (26) 내의 공기를 압축하도록 배치된다. The pneumatic down-the-hole drill includes a frame 21, a pneumatic striking piston 24, a transfer channel for transferring the pressurized air to the DTH-drill, and a frame 21 And the shoulder in the striking piston 24, and the striking piston 24 moves in a reciprocating manner when the pressurized air is delivered to the DTH-drill, and is moved to the front end of the frame 21 And strikes a tool mounted movably in the longitudinal direction of the frame 21. [ The down-the-hole drill includes a combustion chamber 26, an accelerating piston 25, means for transferring combustion air and fuel to the combustion chamber 26, and at the rear end of the frame 21, (25) is arranged to push the striking piston (24) during impact movement for only a portion of the movement of the striking piston (24), and the striking piston (24) And to compress the air in the combustion chamber 26 prior to transferring the fuel to the combustion chamber 26.

Active alternator control in a downhole tool string

A downhole system includes a drill string having a drilling fluid flow channel and at least one turbine alternator deployed in the flow channel. The turbine alternator is configured to convert flowing drilling fluid to electrical power. A voltage bus is configured to receive electrical power from the turbine alternator and at least one electrical motor is configured to receive electrical power from the voltage bus. An electronic controller is configured to provide active control of the turbine alternator via processing a desired speed of the electrical motor to generate a desired torque current and feeding the desired torque current forward to the turbine alternator. The turbine alternator is responsive to the desired torque current such that it modifies the electrical power provided to the voltage bus in response to the desired torque.

SIMULTANEOUS DRILLING AND TUBING DEVICE

Apparatus and method for directional drilling with downhole motor on coiled tubing

A downhole adjustable orienting sub is included in a directional drilling tool string that is run into the borehole on coiled tubing. The bent housing of the tool string defines a bend angle and a bend point, and the bend point is oriented about the center of the bore by operating the orienting sub. The level of the reactive torque applied to the bent housing as the bit drills on bottom is controlled by selecting the amount of the weight of the coiled tubing that is applied to the bit. The orienting sub can be indexed downhole to provide different orientations of the bend point by temporarily reducing and then increasing the mud flow rate.

Self-controlled directional drilling systems and methods

The present invention provides a drilling assembly that includes a mud motor that rotates a drill bit and a set of independently expandable ribs. A stabilizer uphole of the ribs provides stability. A second set of ribs may be disposed on the drilling assembly. Vertical and curved holes are drilled by rotating the drill bit by the mud motor and by independently adjusting the rib forces. The drill string is not rotated. Inclined straight sections and curved sections may be drilled by independent adjustment of the rib forces and by rotating the drill bit with the motor, without rotating the drill string. Inclined sections or curved sections in the vertical plane are drilled by superimposing the drillstring rotation on the mud motor rotation and by setting the rib forces to the same predetermined values. Rib forces are adjusted if the drilling direction differs from the defined inclination. The system is self-adjusting and operates in a closed loop manner. Inclination and navigation sensor data are processed by a downhole controller. The force vectors may be programmed in the downhole controller. Command signals from a surface controller may be sent to initiate the setting and/or adjustment of the rib forces or the rib force vector.

Control of directional drilling with adjustable rock drill rotation

Изобретение относится к нефтегазовой промышленности, а именно к способу наклонно-направленного бурения скважин. Приводят во вращение долото при помощи двигателя, расположенного в кривом переводнике и бурильной колонны, независимо друг от друга. Производят периодическое изменение частоты вращения бурового долота на протяжении угла предпочтительного съема непропорционального количества породы внутри азимутального свода от первой частоты вращения до второй частоты вращения. При этом поддерживают вторую частоту вращения на протяжении этого угла, после чего возобновляют вращение долота с первой частотой. Частоту вращения долота изменяют путем изменения частоты вращения бурового двигателя или бурильной колонны. Позволяет поддерживать направление скважины с точной траекторией, а также обеспечивает гибкость управления траекторией скважины в процессе бурения на любой глубине и в любом направлении. 5 з.п. ф-лы, 8 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 442 873 (13) C2 (51) МПК E21B 7/04 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2010107703/03, 23.05.2008 (24) Дата начала отсчета срока действия патента: 23.05.2008 (73) Патентообладатель(и): ПРЕСИЖН ЭНЕРДЖИ СЕРВИСИЗ, ИНК. (US) R U Приоритет(ы): (30) Конвенционный приоритет: 31.08.2007 US 11/848,328 (72) Автор(ы): ФАРЛИ Стивен (US) (43) Дата публикации заявки: 10.10.2011 Бюл. № 28 2 4 4 2 8 7 3 (45) Опубликовано: 20.02.2012 Бюл. № 5 (56) Список документов, цитированных в отчете о поиске: US 5133418 А, 28.07.1992. SU 1059113 А, 07.12.1983. SU 1550071 A1, 15.03.1990. RU 2114273 C1, 27.06.1998. EP 171259 A1, 12.02.1986. 2 4 4 2 8 7 3 R U (86) Заявка PCT: US 2008/064642 (23.05.2008) C 2 C 2 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 31.03.2010 (87) Публикация заявки РСТ: WO 2009/032367 (12.03.2009) Адрес для переписки: 119296, Москва, а/я 113, пат.пов. Э.П.Песикову, рег.№ 204 (54) УПРАВЛЕНИЕ НАКЛОННО-НАПРАВЛЕННЫМ БУРЕНИЕМ С ИСПОЛЬЗОВАНИЕМ ...

Method and device for drilling of bore-hole

FIELD: bore-hole drilling technology. SUBSTANCE: invention relates to drilling of directed bore-holes. Drilling of bore-hole in geological formation is performed by drilling device which has drilling string passing into bore-hole. Also provided is bottom-hole motor incorporating body and driving shaft for rotation of drilling head. Driving shaft is oriented at incline with respect to longitudinal axis of lower part of drilling string. Body of motor is connected with lower part of drilling string so as to allow for rotation of motor body around longitudinal axis. Drilling device incorporates electric motor intended for rotation of motor body around longitudinal axis of lower part of drilling string and also relative to drilling string. According to method, actually straight section of bore-hole is drilled due to inducting electric motor for rotation of motor body continuously around longitudinal axis of lower part of drilling string and relative to drilling string. Electric motor operates at bottom-hole for rotation of drilling head. Drilling head is oriented accordingly for drilling of inclined section of bore-hole with motor body kept stationary. Application of method and device allows for driving straight and inclined sections of bore-hole by using operating units of conventional design, thus enhancing efficiency of drilling. EFFECT: higher efficiency. 8 cl, 1 dwg ЗУСсбУГсС ПЧ ГЭ (19) РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ ВИ” 2149 248 ' (51) МПК? 13) Сл Е 21 В 7/06 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 97112381103, 20.12.1995 (24) Дата начала действия патента: 20.12.1995 (30) Приоритет: 21.12.1994 ЕР 94203712.8 (46) Дата публикации: 20.05.2000 (56) Ссылки: ЕР 0571045 АЛ, 19.05.1993. ЗЦ 71772 А, 15.06.1941. $ЦЧ 105766 А, 12.04.1957. $4 818895 А, 07.11.1981. 50 1285138 АЛ, 23.01.1987. $Ц 1550071 АЛ, 15.03.1990. $ 4040494 А, 09.08.1977. ММО 93123652 АЛ, 25.11.1993. (85) Дата перевода заявки РСТ на национальную фазу: ...

Device for drilling bore hole in the ground

一种地层井眼钻井装置具有一个旋转驱动头和一个与旋转驱动头相连的且可以通过旋转驱动头一直降入地层井眼中的空心连接钻杆(105)。在连接钻杆(105)下端上设有一个具有许多向下掘进的且由驱动液驱动的撞锤(41)的钻头。所述驱动是绕一个限定角振动地实现的，此实施例允许采用用于输送冲洗液和工作液的活动输入管道并允许排出掘进废料。

ULTRA-SHORT RADIUS DRILLING WELL DRILLING METHOD

ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß (19) RU (51) ÌÏÊ 7 (11) 2003 133 980 (13) A E 21 B 7/06 ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÇÀßÂÊÀ ÍÀ ÈÇÎÁÐÅÒÅÍÈÅ (21), (22) Çà âêà: 2003133980/03, 23.04.2002 (71) Çà âèòåëü(è): ØÅËË ÈÍÒÅÐÍÝØÍË ÐÈÑÅÐ× ÌÀÀÒÑÕÀÏÏÈÉ Á.Â. (NL) (30) Ïðèîðèòåò: 23.04.2001 EP 01303703.1 (43) Äàòà ïóáëèêàöèè çà âêè: 27.03.2005 Áþë. ¹ 9 (74) Ïàòåíòíûé ïîâåðåííûé: Åãîðîâà Ãàëèíà Áîðèñîâíà (86) Çà âêà PCT: EP 02/04516 (23.04.2002) Àäðåñ äë ïåðåïèñêè: 129010, Ìîñêâà, óë. Á.Ñïàññêà , 25, ñòð.3, ÎÎÎ "Þðèäè÷åñêà ôèðìà Ãîðîäèññêèé è Ïàðòíåðû", ïàò.ïîâ. Ã.Á. Åãîðîâîé R U Ôîðìóëà èçîáðåòåíè 1. Ñïîñîá áóðåíè áóðîâîé ñêâàæèíû â ïîäçåìíîé ôîðìàöèè ñ èñïîëüçîâàíèåì êîëîííû áóðèëüíûõ òðóá, èìåþùåé âåðõíèé ó÷àñòîê è íèæíèé ó÷àñòîê, âë þùèéñ áîëåå ãèáêèì, ÷åì âåðõíèé ó÷àñòîê, ñîäåðæàùèé ñëåäóþùèå îïåðàöèè: áóðåíèå ïåðâîé ñåêöèè áóðîâîé ñêâàæèíû, áóðåíèå âòîðîé ñåêöèè áóðîâîé ñêâàæèíû îò ïåðâîé ñåêöèè áóðîâîé ñêâàæèíû, ïðîõîä ùåé ïîä âûáðàííûì óãëîì îòêëîíåíè îòíîñèòåëüíî ïåðâîé ñåêöèè, ïðè êîòîðîì êîëîííó áóðèëüíûõ òðóá ñïóñêàþò ïî áóðîâîé ñêâàæèíå òàêèì îáðàçîì, ÷òî âåðõíèé ó÷àñòîê êîëîííû áóðèëüíûõ òðóá îñòàåòñ â ïåðâîé ñåêöèè, à íèæíèé ó÷àñòîê êîëîííû áóðèëüíûõ òðóá ïðîõîäèò âî âòîðóþ ñåêöèþ áóðîâîé ñêâàæèíû, ïåðâà ñåêöè áóðîâîé ñêâàæèíû âë åòñ ïî ñóùåñòâó ïð ìîé, à âòîðà ñåêöè áóðîâîé ñêâàæèíû âë åòñ èçîãíóòîé ñåêöèåé, ïðè ýòîì íèæíèé ó÷àñòîê êîëîííû áóðèëüíûõ òðóá íàïðàâë åòñ îò ïåðâîé ñåêöèè áóðîâîé ñêâàæèíû âî âòîðóþ ñåêöèþ áóðîâîé ñêâàæèíû ïîñðåäñòâîì òðóá÷àòîãî êîðïóñà èëè òðóá÷àòîãî ýëåìåíòà, ðàçìåùåííîãî â ïåðâîé ñåêöèè áóðîâîé ñêâàæèíû, ïðè÷åì òðóá÷àòûé êîðïóñ èëè òðóá÷àòûé ýëåìåíò èìååò êàíàë, ÷åðåç êîòîðûé ïðîõîäèò êîëîííà áóðèëüíûõ òðóá è êîòîðûé èìååò íèæíèé êîíöåâîé ó÷àñòîê, íàïðàâëåííûé êî âòîðîé ñåêöèè áóðîâîé ñêâàæèíû. 2. Ñïîñîá ïî ï.1, â êîòîðîì ïåðâà ñåêöè áóðîâîé ñêâàæèíû ôîðìèðóåò ãëàâíóþ áóðîâóþ ñêâàæèíó, à âòîðà ñåêöè áóðîâîé ñêâàæèíû ôîðìèðóåò îòâåòâë þùóþñ áóðîâóþ ñêâàæèíó îò ãëàâíîé áóðîâîé ñêâàæèíû. 3. ...

Method of optimizing the efficiency of drilling with reduction of step-like supply

FIELD: mining. SUBSTANCE: method and control system includes the solution of one or more optimisation tasks containing the objective function. The objective function may depend on conditions including the physical model of the drilling system. The objective function can be minimized without resorting to the model, but by referring to the calculated hopping frequency based on the angular velocity profile of the drill bit. Additionally, actual downhole measurements for use in the method and control system, such as the angular velocity of the drill bit, can be calculated using an observation unit. EFFECT: reducing or eliminating step-like supply and vibrations in the well. 26 cl, 6 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 629 029 C1 (51) МПК E21B 44/00 (2006.01) G06F 19/00 (2011.01) G05D 17/02 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2016101053, 17.08.2013 (24) Дата начала отсчета срока действия патента: 17.08.2013 (72) Автор(ы): ДАЙКСТРА Джейсон (US), СУНЬ Чжицзе (US) 24.08.2017 Приоритет(ы): (22) Дата подачи заявки: 17.08.2013 (56) Список документов, цитированных в отчете о поиске: RU 2478781 C2, 10.04.2013. RU (85) Дата начала рассмотрения заявки PCT на национальной фазе: 17.03.2016 (86) Заявка PCT: US 2013/055481 (17.08.2013) (87) Публикация заявки PCT: 2 6 2 9 0 2 9 R U Адрес для переписки: 129090, Москва, ул. Б.Спасская, 25, строение 3, ООО "Юридическая фирма Городисский и Партнеры" (54) СПОСОБ ОПТИМИЗАЦИИ ЭФФЕКТИВНОСТИ БУРЕНИЯ С УМЕНЬШЕНИЕМ СКАЧКООБРАЗНОЙ ПОДАЧИ (57) Реферат: Изобретение относится к подземным условий, включающих физическую модель операциям бурения, в частности к стабилизации бурильной системы. Целевая функция может быть бурового долота, бурильной колонны и/или минимизирована без обращения к модели, а скважинных приборов от боковой вибрации и посредством обращения к вычисленной частоте скачкообразной подачи. Техническим скачкообразной подачи на основании профиля ...

Rotary drilling rig capable of realizing positive and negative circulation pneumatic down-hole hammer construction method

本发明公开一种可实现正、反循环气动潜孔锤工法的旋挖钻机，包括旋挖钻机机身(13)、鹅头(7)、钢丝绳(6)、动力头(11)、钻杆(10)、水龙头(8)、随动架(9)、正反循环转换装置(12)以及正循环潜孔锤(14)，水龙头、钻杆和正反循环转换装置内部都设有潜孔锤供气、气举反循环供气和排渣三条管路；水龙头固定安装在随动架上，下端与钻杆连接，钻杆穿过动力头，传递旋挖动力；正反循环转换装置安装在钻杆与正循环潜孔锤之间。本发明通过拆除、安装正反循环转换装置，实现正、反循环施工；供气管路、排渣管路等全部从水龙头、钻杆和正反循环转换装置内部通过，无需改动动力头即可实现普通旋挖与气动潜孔锤旋挖之间的切换。

Device and method for installing a bushing

一种用于在井孔中安装套管的装置和方法。该装置(100)包括：套管(1)；适配在套管(1)内的钻孔管(2)，该钻孔管(2)包括压缩空气流动通道(3)；以及冲洗介质流动通道(4)。冲洗介质流动通道(4)布置成将冲洗介质引导到井孔底部(B)。该装置(100)还包括冲击锤(5)，其包括适配在冲击锤缸体(9)内的压缩空气操纵的冲击活塞(6)，以及用于为套管(1)钻出孔的钻孔设施(8)。冲洗介质流动通道(4)适于绕过冲击活塞(6)，或者该冲洗介质流动通道适于穿过冲击活塞(6)，在该装置中钻孔设施(8)还包括传递转动运动的花键(28)，该花键适于引导冲击活塞(6)使用的压缩空气穿过所述花键。

Apparatus for drilling hole toward target

Horizontal directional drilling system

本公开提供了一种钻井机构造以及相关的方法，其避免了钻井泥浆污染流动通过钻井机的驱动系统的液压流体。所公开的系统和方法提供了一种很少需要维护的钻井泥浆抗污染系统以及能够很快且容易地执行维护的系统。

Earth formation underreamer

Drilling tool with non-rotating sleeve

The invention refers to a drilling tool and method that, among other aspects, provides for a sleeve with expansible pads for positioning the drilling tool in the desired direction during drilling. The pads are hydraulically expanded and retracted by a valve system which selectively diverts mud flowing through the tool to the desired pads. The tool may also be provided with a flexible tube connecting the sleeve to drilling tool for maneuvering along deviations or curves in the wellbore.

DRILLING DEVICE

Pronalazak se odnosi na jedan uredjaj za bušenje, posebno za bušenje pomoću eksploziva, sa postoljem za pomicanje, kao i za izvlačenje, sloga bušećih šipki sastavljenog od pojedinačnih bušećih šipki, jednim sistemom za izvodjenje pomaka, pogonskim uredjajem sa fluidom pod pritiskom za slog bušećih šipki, jednom glavom za izduvavanje koja se može kretati duž postolja bilo sa, bilo odvojeno od sloga bušećih šipki, kao i jednim na prednjem kraju sloga bušećih šipki postavljenim hidrauličnim usadjenim čekićem. Da bi se ostvario uredjaj za bušenje opisane vrste, koji bi primenom jednog, na prednjem kraju sloga bušećih šipki postavljenog, hidrauličnog usadjenog čekića omogućio jednostavnu i brzu zamenu bušećih cevi, predlaže se, prema pronalasku, da pogonski uredjaj 15 sloga bušećih šipki prenosi na ove naizmenično zakretno kretanje. Ugao zakretanja sloga bušećih cevi iznosi 180 do 360. Kao pogonski uredjaj 15 koristi se motor koji vrši naizmenično zakretanje, opremljen reduktorom 16. Na taj način je moguće da se potrebni vodovi za pokretanje usadjenog čekića postave u prstenasti prostor izmedju sloga bušećih šipki i zida bušotine, ili u žlebove sloga bušećih cevi, tako da se isti kod zamene bušećih cevi ne moraju rastavljati.

Closed loop drilling assembly with electronics outside a non-rotating sleeve

IMPROVEMENT IN SOIL DRILLING DEVICES INCLUDING A DRILLING TOOL FIXED AT THE END OF A ROD FORMED FROM TWO CONCENTRIC TUBES

EQUIPMENT FOR DRILLING PACKAGE COMPRISING AN ELEMENT TO BE ACTUATED, A MOTOR AND CONTROL MEANS

Diverter device for turbo-drilling

Improvement to ground-drilling devices comprising a drilling tool fixed to the end of a rod formed by two concentric pipes

DISPOSITIF DE FORAGE DES SOLS APTE A ETRE ANIME D'UN MOUVEMENT DE ROTATION ET QUI COMPREND UNE TIGE 1 RENFERMANT UN CIRCUIT PERIPHERIQUE 4, 8 DESTINE A ACHEMINER UN FLUIDE SOUS PRESSION, TEL QUE L'AIR, EN VUE DE L'EVACUATION DES DEBLAIS, VERS LE FRONT DE TAILLE, ET UN CIRCUIT CENTRAL DESTINE A EVACUER CE FLUIDE CHARGE DES DEBLAIS DE TAILLE, AINSI QU'UN OUTIL DE FORAGE 20 PORTE PAR LA TIGE 1 ET POURVU D'UN PASSAGE SENSIBLEMENT AXIAL POUR L'ACCES DU FLUIDE SOUS PRESSION, CARACTERISE EN CE QUE L'ENTREE 21 DU FLUIDE SOUS PRESSION ALIMENTANT L'OUTIL DE FORAGE 20 EN ENERGIE MOTRICE, SITUEE AU CENTRE DE SA PARTIE SUPERIEURE, COMMUNIQUE AVEC LE CIRCUIT PERIPHERIQUE DE LA TIGE 1 QUI PORTE LEDIT OUTIL, LE CIRCUIT CENTRAL DE LA TIGE COMMUNIQUANT AVEC L'ESPACE SITUE DANS LE FORAGE A LA PERIPHERIE DE L'OUTIL.

CONTROLLED TRACK DRILLING HAVING A VARIABLE-ANGLE ELBOW ELEMENT AND USE THEREOF

La présente invention concerne une garniture pour forage à trajectoire contrôlée. Cette garniture comprend un moteur de fond 36 un outil de forage 35, au moins un stabilisateur 38 et un élément coudé à angle variable 37 télécommandé. Application aux forages pétroliers. The present invention relates to a string for controlled trajectory drilling. This fitting comprises a downhole motor 36, a drilling tool 35, at least one stabilizer 38 and a variable angle elbow element 37 remotely controlled. Application to oil drilling.

TOWER FOR DRILLING AND MAINTENANCE OF OIL WELLS OR GAS

L'INVENTION CONCERNE UNE TOUR 1 POUR LE FORAGE ET L'ENTRETIEN DE PUITS DE PETROLE OU DE GAZ. LA TOUR DE FORAGE COMPREND UNE STRUCTURE EN FORME DE PORTIQUE INSTALLEE SUR LA PLATE-FORME DE FORAGE ET SE COMPOSANT D'UNE TRAVERSE SUPERIEURE 2 ET DE DEUX MONTANTS VERTICAUX, PARALLELES ET ESPACES 3, 4 QUI DEFINISSENT ENSEMBLE UN ESPACE LIBRE 5 DANS LEQUEL UN ELEVATEUR HYDRAULIQUE 6 RELIE A UNE MACHINE DE FORAGE 18 ASSOCIEE A LA TIGE DE FORAGE 15 EST CONCU POUR SE DEPLACER LE LONG DE RAILS VERTICAUX STATIONNAIRES A CREMAILLERES 10; L'ELEVATEUR MOBILE 6 EST ENTRAINE PAR DES MOTEURS HYDRAULIQUES COMPORTANT DES ENGRENAGES 9 EN PRISE AVEC DES CREMAILLERES 10. APPLICATION A L'EQUIPEMENT DE PLATES-FORMES MARINES. THE INVENTION CONCERNS A TOWER 1 FOR DRILLING AND MAINTENANCE OF OIL OR GAS WELLS. THE DRILLING TOWER CONSISTS OF A GANTRY-SHAPED STRUCTURE INSTALLED ON THE DRILLING PLATFORM AND CONSISTING OF AN UPPER CROSSBODY 2 AND TWO VERTICAL UPRIGHTS, PARALLEL AND SPACES 3, 4 THAT TOGETHER DEFINE A FREE SPACE 5 IN WHICH ONE HYDRAULIC ELEVATOR 6 CONNECTED TO A DRILLING MACHINE 18 ASSOCIATED WITH THE DRILLING ROD 15 IS DESIGNED TO MOVE ALONG STATIONARY VERTICAL RAILS WITH RACK 10; THE MOBILE ELEVATOR 6 IS DRIVEN BY HYDRAULIC MOTORS INCLUDING GEARS 9 IN CONNECTION WITH RACKS 10. APPLICATION TO MARINE PLATFORMS EQUIPMENT.