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Matches 1 - 50 out of 2,676

Document Document Title
WO/2018/187765A1
A pressure pulse tool includes a tool housing, a valve disposed in the housing and having first and second valve components that are each rotatable relative to the housing and that cooperate to open and close a fluid flow path through th...  
WO/2018/183499A1
A system for generating pressure pulses in drilling fluid includes a concentric drive power section. The power section includes a stator and a rotor rotatably disposed in the stator. The rotor is coaxially aligned with the stator. The sy...  
WO/2018/165734A1
A radial bearing for transmitting a radial load, including a first radial bearing component having an inner surface defining a bore and a second radial bearing component received within the bore of the first radial bearing component and ...  
WO/2018/164347A1
The present invention relates to a drilling apparatus for constructing a jacket of marine equipment and a drilling method using the same, the apparatus having a crushed material storage unit for storing crushed materials generated during...  
WO/2018/165348A1
A hybrid bit includes an earth-boring element and a percussion element. The earth-boring element and the percussion element are coaxially arranged, with the earth-boring element surrounding the percussion element. A reciprocating member ...  
WO/2018/160095A1
The group of inventions relates to the field of drilling equipment. A sub stop mechanism is fastened between bearings and comprises a tubular stopping member, the cavity of which contains an annular insert with stop recesses. Each recess...  
WO/2018/157218A1
The invention refers to a continuous wedging tool for directional diamond drilling, employed in geological prospecting. It comprises a composite stator assembly (1) with a bearing seated composite rotor assembly (2) ending in a drill bit...  
WO/2018/139961A3
A power transmission system and method for transmitting power over a three-phase power system on a multi-conductor power cable between a surface and a sub-surface location are provided. A surface system includes a power supply providing ...  
WO/2018/128701A3
A method of operating a Moineau system to substantially eliminate vibrations, the method includes rotating a first rotational member, and rotating a second rotational member. Each of the first rotational member and the second rotational ...  
WO/2018/128832A1
An apparatus for use in a wellbore is disclosed that in one non-limiting embodiment includes a rotatable member, a thrust bearing coupled to the rotatable member, wherein the thrust bearing includes a bearing stack that further includes ...  
WO/2018/128701A2
A method of operating a Moineau system to substantially eliminate vibrations, the method includes rotating a first rotational member, and rotating a second rotational member. Each of the first rotational member and the second rotational ...  
WO/2018/125787A1
This disclosure describes various implementations of a downhole-blower system that can be used to boost production in a wellbore. The downhole-blower system includes a blower and an electric machine coupled to the blower that can be depl...  
WO/2018/114230A1
The invention relates to a rotary drilling tool and to a method for creating a borehole in the ground, comprising a main body, a removal apparatus, which has at least one hammer unit, which comprises an axially reversingly driven hammer ...  
WO/2018/107304A1
The invention relates to a pressurised fluid flow system for a reverse circulation down-the-hole hammer which comprises a coaxial jacket arranged between an outer casing and a piston which reciprocates due to changes in the pressure of t...  
WO/2018/107305A1
The invention relates to a pressurised fluid flow system for a down-the-hole hammer, comprising principal and auxiliary chambers that exert work on a piston. The auxiliary chambers are formed around respective recesses in the piston and ...  
WO/2018/102353A1
A subsea tool comprising: a cylindrical body; one or more casing anchors attached to the cylindrical body; and a modular attachment and associated systems and methods.  
WO/2018/085393A1
A bottomhole assembly may include a downhole motor and bearing assembly. The downhole motor may include a rotor and stator. The bearing assembly may include a bearing mandrel. The bearing mandrel may be coupled to the rotor by a transmis...  
WO/2018/085502A1
A bearing section for a mandrel at least partially disposed within an inner bore of a housing. A radial bearing and a thrust bearing are each disposed around the mandrel and within the inner bore of the housing. The radial bearing includ...  
WO/2018/081103A1
A downhole drilling motor includes a motor housing having an inner bore and an outer surface. A power section includes a stator elastomer at least partially disposed within the inner bore of the motor housing. A bearing section includes ...  
WO/2018/074944A1
The invention relates to mining and construction activities, including the rotary core drilling of medium and large diameter vertical, inclined and horizontal boreholes, mineral extraction, and the laying of underground passages and tunn...  
WO/2018/058188A1
A transmission device comprising a body, an input member extending at least part way along the body, and having an axis of rotation, a gear assembly connected thereto, having an inner gear, one or more intermediate gears engaged to it; a...  
WO/2018/057696A1
An apparatus for drilling directional wellbores is disclosed that in one non-limiting embodiment incudes a drive for rotating a drill bit, a deflection device that enables a lower section of a drilling assembly to tilt about a member of ...  
WO/2018/057960A1
A downhole motor-pump assembly disposed within a tubular string includes a rotor and a stator. The rotor has a first rotor portion and a second rotor portion. The first rotor portion has a first geometrical shape and the second rotor por...  
WO/2018/057698A1
An apparatus for drilling a directional wellbore is disclosed that in one non-limiting embodiment includes a drive for rotating a drill bit, a deflection device that enables a lower section a drilling assembly to tilt within a selected p...  
WO/2018/049199A1
A drill string comprises a mechanical drill bit and a ram accelerator with a launch tube proximate to the mechanical drill bit. A projectile accelerated by the ram accelerator exits the mechanical drill bit through an orifice and impacts...  
WO/2018/044259A1
A riser tensioner system has a riser support device, an actuator, and a bearing assembly disposed between the riser support device and the actuator. The bearing assembly is configured to provide at least five degrees of freedom of moveme...  
WO/2018/026849A1
Apparatus and method for drilling a wellbore using non-synchronous oscillators. An apparatus for drilling a wellbore includes a tubing string and a bottom hole assembly coupled to the tubing string. The bottom hole assembly includes a fi...  
WO/2018/013292A1
A bearing assembly for a downhole drilling motor can include a housing having an inner wall, an outer bearing race within the housing, and an inner bearing race. The outer bearing race can include a reduced-diameter portion forming a gap...  
WO/2017/211675A1
The invention relates to a drill drive for a drilling rig with a motor, by which a drive shaft is rotationally driven which is supported in a rotatable manner in a housing with a bearing arrangement having at least a radial bearing, a fi...  
WO/2017/209745A1
An assembly can include a cylindrical torque-resisting component that includes a flange portion, a first face, a through bore, and a counter-bore that defines a second face; a cylindrical adapter component that includes external threads,...  
WO/2017/204947A1
A downhole pulsing apparatus having a tubular housing, a first valve assembly positioned in the housing, first and second turbine stages each comprising a stator and a rotor positioned in the housing below the first valve assembly and a ...  
WO/2017/197442A1
A fluid pulse apparatus for down hole drilling having a turbine assembly actuated by a flow of drilling fluid. The apparatus has a narrowed fluid flow section that cooperates with a piston that moves between an open a fluid flow restrict...  
WO/2017/189284A1
A method for determining a rotational frequency of a positive displacement motor positioned in a downhole portion of a drill string, the method including: providing at least one measurement device for measuring a property of a part of th...  
WO/2017/177335A1
A rotary drive includes a housing; a shaft rotatably mounted within the housing and rotatable about a drive axis; a passage internal the housing and extending circumferentially about the shaft; a stator vane within the passage; and a rot...  
WO/2017/174488A1
The invention relates to a magnetic propulsion system (6) to exert a forward thrust and/or a counter hold on the drill components of a drilling system, wherein the drill components are or can be tightly coupled to a tubular member (604) ...  
WO/2017/174483A1
The invention relates to a hydraulic motor (2), comprising a cylindrical motor housing (201) with a central cylindrical rotor (202) carrying longitudinal vanes (208), wherein the vanes (208) are provided at the outer surface of the rotor...  
WO/2017/168272A1
A wellbore motor includes a lower drive shaft rotatably supported in a housing. The housing has at least one coupling element to couple the housing to a drill string. A coupling connects the lower drive shaft to a power section disposed ...  
WO/2017/164713A1
A water hammer device of the present invention comprises: a hammer body having a bit unit, which performs a drilling operation and is provided at an end portion thereof; a piston slidably provided in the hammer body, and having a working...  
WO/2017/158573A1
A gear system (10) comprises a modular gear assembly (124,125,127) which is housed in a gear assembly housing (114). The gear assembly housing (114) is adapted to be connected to another gear assembly (124,125,127) which drives an output...  
WO/2017/142415A1
The invention relates to a downhole tractor comprising a hydraulic supply line (200, 300) for actuating hydraulic components (160-1..160-4, 170-1..170-4). The downhole tractor further comprises a hydraulic power pack (100) coupled to the...  
WO/2017/134460A1
A reaming assembly (10) having an inner mandrel (12) including spiral lobes disposed on an outer surface thereof. The inner mandrel (12) is hollow and is sized large enough to freely pass a standard drill bit therethrough. The reaming as...  
WO/2017/118963A1
The invention relates to a down-the-hole drill hammer. A reciprocating piston (2) has a piston head (3) with a piston stem (4) that is withdrawn from a piston stem bush (16) to exhaust a return chamber (18). A control rod (14) is support...  
WO/2017/117651A1
A radial bearing for transmitting a radial load, including a first radial bearing component defining a first radial bearing surface and an orientable second radial bearing component defining a second radial bearing surface. At least a po...  
WO/2017/119823A1
The present invention relates to a slick line and/or fibre optic cable pulling wellbore and/or tubing pulling tool including a propulsion module (64) having a main section (1 ) and a hinged propulsion arm (2). A propulsion wheel (6) with...  
WO/2017/106479A1
A force stacking assembly for use with an earth boring system that includes a series of actuators (37) that each generate a force, and that are arranged to create a combined force that is cumulative of all of the actuators. The actuators...  
WO/2017/106479A8
A force stacking assembly for use with an earth boring system that includes a series of actuators (37) that each generate a force, and that are arranged to create a combined force that is cumulative of all of the actuators. The actuators...  
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...  
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...  
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...  
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...  

Matches 1 - 50 out of 2,676