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WO/2017/100552A1 |
A hydraulic tool includes a stator, a rotor, and a removable coating. At least one of the stator and the rotor comprises a resilient material. The removable coating has a thickness compensate for expected swelling of the resilient materi...
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WO/2017/100219A1 |
A coring tool including a coring bit operable to obtain a core sample of a subterranean formation from a sidewall of a wellbore extending into the subterranean formation. The coring tool also includes a storage tube, an actuator operable...
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WO/2017/100648A1 |
A downhole system for use in a wellbore in a subterranean formation includes an electromechanical motor or generator. The electromechanical motor or generator may, respectively, be configured convert electricity to mechanical energy or c...
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WO/2017/097692A1 |
The invention relates to an apparatus and to a method for driving a cavity (103) in mining, wherein an extraction drum (139) rotatable about a drum axis of rotation (233) is rotatably mounted in relation to a longitudinal axis (218) by m...
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WO/2017/095466A1 |
A method of manufacturing a power unit for a downhole drilling motor includes fabricating a stator that provides two or more stator lobes that define an internal profile, and fabricating a rotor that provides at least one rotor lobe that...
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WO/2017/095877A1 |
A top drive system with a removable flange is provided. In one embodiment, a top drive (28) includes a quill (46), a motor (44) coupled to drive rotation of the quill, and a swivel (42) including a housing (62) and a bearing (64) dispose...
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WO/2017/086979A1 |
Methods and apparatus are disclosed for retaining components in a downhole motor in the event of a mechanical separation or failure of one or more components therein. As described, the retention mechanism does not require a threaded conn...
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WO/2017/086967A1 |
Methods and apparatus are disclosed for retaining components in a downhole motor in the event of a mechanical separation or failure of one or more components therein. As described, the retention mechanism does not require a threaded conn...
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WO/2017/074352A1 |
A method and apparatus according to which an output of a power generation system is controlled. In one embodiment, the power generation system includes a turbine and a feedback control system. The turbine includes a rotor to which a firs...
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WO/2017/072746A1 |
A well-drilling apparatus, a system and a method which may be operable by hand or by mechanical means. The well-drilling apparatus comprises: a drill stem comprising a tubular elongated body, the tubular elongated body comprising a plura...
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WO/2017/074259A1 |
A drive system housing is provided with an engagement-disengagementmechanism that is advantageous to connect (make up) or disconnect (break out)drill bit or other device connection from the drive system housing. The drive systemhousing c...
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WO/2017/069768A1 |
A process of manufacturing a downhole tool having hardfacing erosion protection formed on the inner surface of a confined space having a cross-sectional width of at least 26 millimeters, such as an inlet port or an inner bore of a drilli...
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WO/2017/069730A1 |
A catch assembly is provided for a downhole motor assembly of a drilling system. The catch assembly may include a catch basket that may be coupled to a saver sub. The saver sub may be coupled to a stator tube housing a rotor of a downhol...
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WO/2017/065738A1 |
In accordance with embodiments of the present disclosure, a hybrid drive for use within a rotary steerable drilling tool is provided. The hybrid drive may enable improved directional drilling performance of the rotary steerable drilling ...
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WO/2017/063051A1 |
A hydraulic anchoring assembly (10, 10a), and method of its use, for anchoring and sealing an insertable progressing cavity pump on rods in a well. The assembly (10, 10a) has one or more cup seals (42, 42a), upstream of one or more infla...
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WO/2017/065775A1 |
A clamping assembly may include a split-ring device and bearing for coupling to a driveshaft. The split-ring device may comprise split-ring shells having protrusions on an interior radial surface for positioning in grooves adjacent to ra...
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WO/2017/054472A1 |
A torsion impact speed accelerating device comprises a main body (1), a chopping board member (2), an impact hammer member (3), a conversion member (4), a mandrel (5) and a throttle nozzle (6). An inner limit boss (7) is fixed at an uppe...
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WO/2017/056026A1 |
A percussion device that includes: - an input side; - an output side; - at least one drive transmitter; - a drive transmitter pathway; - a percussion impactor; and - a percussion anvil; where: the drive transmitter pathway is a circumfer...
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WO/2017/048247A1 |
Methods and apparatus are disclosed for coupling components within a downhole motor drivetrain, and particularly to improving the torque carrying characteristics through threaded couplings in the drivetrain that extends between the mud m...
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WO/2017/048279A1 |
Various embodiments include determining an alternating current (AC) voltage and frequency of a supply voltage coupled to a circuit input. The circuit includes a soft starter circuit that is coupled between the circuit input and a first s...
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WO/2017/046584A1 |
A drilling assembly comprises an outer housing, a drive shaft, an articulated steering shaft assembly, a drill bit at end of steering shaft assembly and an eccentric fulcrum support though which the steering shaft assembly passes. The fu...
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WO/2017/034550A1 |
A method and apparatus for transmitting torque in a downhole assembly. The apparatus includes a driver sub with an annular body defining an internal surface, a portion of the internal surface of the driver sub defining a contact surface;...
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WO/2017/027964A1 |
A downhole assembly and method are provided for selective activation of a motor in a drilling string. The downhole assembly includes a stator and a rotor assembly. The rotor assembly comprises a rotor body having a fluid passage extendin...
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WO/2017/029614A1 |
The invention relates to a drive system of the type which is suitable for use with a downhole used in oil well interventions. The invention provides an improved tractor whose speed is controllable remotely, such as from the well bore sur...
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WO/2017/029606A1 |
This invention relates to a downhole tractor drive system, suitable for use in oil well interventions. The invention provides an improved tractor whose speed is controllable remotely, such as from the well bore surface, using hydraulic m...
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WO/2017/027983A1 |
A bearing assembly for use in a bottom hole assembly includes a reactive portion and a fluid restrictor portion, the portions being operatively coupled by a mandrel of the bottom hole assembly. The fluid restrictor portion comprises a pi...
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WO/2017/029622A1 |
This invention relates to a drive system of the type which is suitable for use with a downhole used in oil well interventions. The invention provides an improved tractor whose speed is controllable remotely, such as from the well bore su...
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WO/2017/029621A1 |
This invention relates to a drive system of the type which is suitable for use with a downhole used in oil well interventions. The invention provides an improved tractor whose speed is controllable remotely, such as from the well bore su...
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WO/2017/029613A1 |
This invention relates to a drive system of the type which is suitable for use with a downhole used in oil well interventions. The invention provides an improved tractor whose speed is controllable remotely, such as from the well bore su...
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WO/2017/021339A1 |
A drill (10) having a down the hole (DTH) hammer (100) and a drill bit (12) coupled thereto. The DTH hammer comprises a first component in the form of a backhead (101), a second component in the form of a fluid distribution assembly (105...
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WO/2017/023784A1 |
This disclosure describes methods and systems for remote control of stroke length and frequency of percussion apparatus, such as a rock hammer drill. At a high level, the hammer drill is allowed to stay at a default low stroke length and...
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WO/2017/019093A1 |
An example power converter system may include a non-synchronous buck converter and a controller coupled to the a non-synchronous buck converter to receive a voltage level provided by a power source to the non-synchronous buck converter. ...
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WO/2017/005197A1 |
A hydraulic gentle vibration speed acceleration drill tool used for accelerating the drilling speed of a drill bit. The drill tool consists of an upper joint (1), a power assembly, a flow regulating valve assembly, and a force transmissi...
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WO/2017/007469A1 |
A modular, mechanical percussive hammer assembly may be used with drill strings, wireline cable, and coiled tubing. Rotation of a splined driveshaft by downhole electric, hydraulic or mud motor rotates a downwardly-biased hammer and dril...
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WO/2017/001053A1 |
The invention relates to a percussion drilling device, comprising a percussion piston, which is supported within a housing and which is driven in a cyclic back-and-forth motion, wherein, in a first switching position, the percussion pist...
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WO/2017/000053A1 |
A drilling apparatus having a drive section and a bearing section axially distal to the drive section. The bearing section includes a bearing housing having a bearing housing bore defining a bearing housing bore axis, a sleeve assembly r...
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WO/2016/209084A1 |
Percussive drilling hammer assembly (20) arranged for temporary reduction of hydrostatic pressure locally at the points of material removal by periodically interrupting a flow of liquid towards the drill bit through at least one liquid c...
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WO/2016/195530A1 |
The invention relates to the mining industry and can be used for drilling wells. The present device comprises a housing with a drilling tool, which can be lowered on an armoured sleeve into a wellbore; a gripper mechanism in the form of ...
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WO/2016/195529A1 |
The invention relates to the mining industry and can be used for drilling wells. The present device comprises a housing with a drilling tool, which can be lowered on an armoured sleeve into a wellbore; a gripper mechanism in the form of ...
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WO/2016/195528A1 |
The invention relates to the mining industry and can be used for drilling wells. The present device comprises a housing with a drilling tool, which can be lowered on an armoured sleeve into a wellbore; a gripper mechanism in the form of ...
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WO/2016/195531A1 |
The invention relates to the mining industry and can be used for drilling wells. The present device comprises a housing with a drilling tool, which can be lowered on an armoured sleeve into a wellbore; a gripper mechanism in the form of ...
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WO/2016/195677A1 |
A drilling system comprising a drill string defined between an upper end and a lower end. The drill string comprises a drill pipe, a motor disposed between the drill pipe and the lower end, a drill bit disposed between the motor and the ...
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WO/2016/186991A1 |
A Streamlined Transmission assembly is used to convert eccentric rotation created by the power section into concentric rotation to be received by a bearing assembly in order to drive the rotation of a drill bit attached to a drilling ass...
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WO/2016/178805A1 |
A CV joint for a downhole drilling motor includes a center shaft including a top shaft section and a bottom shaft section. The top shaft section is at least partially housed within a cavity of a first insert, which is housed within a cav...
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WO/2016/178614A1 |
The invention concerns a damping device for a fluid-driven down-the-hole drill for the damping of the recoil from a drill bit (5A) connected to the machine, comprising a machine housing (2), an impact mechanism (3) driven by pressurised-...
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WO/2016/174449A1 |
A stacked stator comprises a plurality of modular components including modular stator elements canned in a cylindrical wall each modular stator being substantially equal in length to a bearing span for the rotor a thin wall longitudinal ...
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WO/2016/176428A1 |
A system and method for operating a mud motor in a wellbore. The method includes running the mud motor into the wellbore. A threshold rate of a pressure increase over time is selected. A rate of a pressure increase over time is measured ...
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WO/2016/173769A1 |
The invention relates to a drilling apparatus (10), comprising a drive device (14) and a comminution tool (16) driven by the drive device (14). The drilling apparatus (10) digs autonomously and in an advancing manner by means of comminut...
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WO/2016/171702A1 |
A stabilizer device is provided for a mud motor drilling assembly. The stabilizer device may be mounted to a motor housing having one or more grooves or ridges. The stabilizer device may include a stabilizer body, a threaded portion, and...
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WO/2016/167764A1 |
A well tool apparatus comprises a control arrangement configured to control response of the downhole tool by varying downhole drilling fluid conditions. The control arrangement includes a valve piston longitudinally slidable in a general...
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