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WO/2015/003267A1 |
A mud motor has integrated rotatable reamer elements. The reamer elements may be located directly radially outwardly of a rotor of the mud motor on an outer surface of the mud motor. The reamer elements may be applied to provide one or m...
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WO/2015/003215A1 |
The present invention is directed to a dynamic seal tube for use in pressurized fluid-driven down hole hammer drills. The dynamic seal tube is a tube that slides within the bore of the piston and the anvil portion of the drill bit and co...
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WO/2014/207163A2 |
The present invention relates to a liquid-powered down-the-hole hammer comprising an external cylindrical outer wear sleeve, an inner cylinder mounted within the outer wear sleeve, and a sliding piston mounted for reciprocating movement ...
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WO/2014/209126A1 |
A method and device for making lateral openings (11) out of a wellbore (1) in a ground formation (2) where at least one laterally directed drill string (28) is movable in the axial direction inside a motherbore tubular (4), and where the...
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WO/2014/210005A1 |
Downhole motors include a stator, which may be formed from a steel material and comprise a bore. At least one surface of the stator may be treated with a surface treatment. The surface treatment includes a nitrided region comprising nitr...
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WO/2014/207164A2 |
The present invention relates to a hydraulically powered percussion mechanism, comprising a piston to impact a percussion bit. The percussion mechanism also includes a first accumulator assembly for hydraulic fluid. The first accumulator...
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WO/2014/201573A1 |
A mud hammer is driven by the flow of drilling fluid to generate pressure pulses. Timing and/or amplitude of the pulses are altered to encode data by applying electromagnetic forces to a movable member of the mud hammer. In an example em...
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WO/2014/198897A1 |
The present invention relates to a downhole machining system (1) for machining a casing (2) in a borehole in a well having a top. The downhole machining system comprises a first tool part (4) having an axial extension (5) and an anchorin...
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WO/2014/194420A1 |
A housing for a mud motor is disclosed. The housing comprises a female member comprising a female mating section and a male member comprising a male mating section and a housing section. The male mating section is matingly received withi...
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WO/2014/191752A2 |
A bearing (12) for a downhole apparatus (10) comprises abody (42) and an upset portion (44). The upset portion (44) extends radially outwards from the body (42), the body (42) and the upset portion (44) defining a channel (46) for receiv...
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WO/2014/189763A1 |
Embodiments of the invention are directed to bearing assemblies configured to effectively provide heat dissipation for bearing elements, bearing apparatuses including such bearing assemblies, and methods of operating such bearing assembl...
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WO/2014/189517A1 |
A downhole drilling motor comprises a first elastomer stator molded to an inner surface of a housing in a drillstring where the first elastomer stator has a first number of lobes. A dual purpose, helical shaped hollow member is positione...
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WO/2014/186354A1 |
A bearing assembly for a drilling tool. A thrust bearing assembly for use in a drilling tool may include a first thrust frame having a generally cylindrical hollow body with a first inner surface, where the first thrust frame includes: (...
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WO/2014/182175A1 |
A steering -joint device (13) arranged between a string section (11) and a drilling section (12) in a rock-drilling machine (1), the steering joint (13) including a universal- joint cross (131) supported in the string section (11) and th...
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WO/2014/182293A1 |
A downhole drilling tool includes a tubular housing having a first longitudinal end and a second longitudinal end, and a stator disposed in the tubular housing, said stator defining an internal cavity passing there through. The stator in...
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WO/2014/182312A1 |
The subject matter of this specification can be embodied in, among other things, a tool string positionable in a wellbore that includes a spur gear driven by a source of input rotation, a planetary gearbox having an attachment structure ...
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WO/2014/178825A1 |
Disclosed are embodiments of an adjustable jar and accelerator system and methods of use thereof. One exemplary jarring system includes a jar having a first processor configured to determine a release point of the jar, an accelerator ope...
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WO/2014/174315A2 |
This invention relates to an improved turbine or motor, such as a fluid or liquid driven turbine or motor or hydraulic turbine or motor. The invention also relates to an improved downhole turbine which may find use in the oil/gas and geo...
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WO/2014/168958A1 |
Progressing cavity devices and systems are provided. In one embodiment, a system includes a metal stator (26) of a progressing cavity device (22, 36). The metal stator includes metal plates (80) with apertures (82) that are rotationally ...
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WO/2014/158645A1 |
A motor assembly is disclosed that includes a vane motor coupled to an output shaft by a drive section. The drive section includes hammers that engage the output shaft to provide improved torque.
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WO/2014/149132A2 |
A drill bit and turbine unit apparatus for drilling a bore which can accept one or more pressures of drilling fluid and/or one or more types of drilling fluid wherein it has two or more distinct and separate fluid paths through said bit ...
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WO/2014/149131A2 |
A drill bit and turbine unit apparatus for drilling a bore which can accept one or more pressures of drilling fluid and/or one or more types of drilling fluid wherein it has two or more distinct and separate fluid paths through said bit ...
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WO/2014/149342A1 |
Bearing apparatuses are disclosed in which one bearing surface of the bearing apparatus includes diamond, while another bearing surface includes a non-diamond superhard material (e.g., silicon carbide). For example, a bearing apparatus m...
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WO/2014/144256A1 |
A downhole motor may include a power section, a connecting rod assembly, and a drive shaft. The power section may include a stator and a rotor with the rotor configured to rotate eccentrically when a drilling fluid is passed through the ...
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WO/2014/138068A1 |
A stator and a method of manufacturing at least a portion of a progressive cavity motor or pump include disposing a cylindrical shell within a cylindrical housing, disposing a stator mold within the cylindrical shell, disposing an elasto...
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WO/2014/137543A2 |
A downhole motor for directional drilling includes a driveshaft assembly including a driveshaft housing and a driveshaft rotatably disposed within the driveshaft housing. In addition, the downhole motor includes a bearing assembly includ...
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WO/2014/134736A1 |
A downhole mud motor is formed of plural housings containing at least a drive section and a transmission section. At least a housing of the plural housings has a longitudinal axis and incorporates a reaming section with one or more rotar...
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WO/2014/131014A1 |
Drilling assemblies, systems and methods enable a wellbore to be drilled and lined with a slotted liner. A drilling system includes a liner assembly with a drill string in a bore thereof. The drill string and the liner assembly can be se...
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WO/2014/130020A1 |
The subject matter of this specification can be embodied in, among other things, a method that includes a downhole rotational lock mechanism including a tubular housing having a longitudinal bore with an internal wall. A driving gear is ...
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WO/2014/130684A1 |
A modified casing coupling houses a pressure relief valve body having a through bore with opposing end openings. The through bore communicates with the interior of the modified casing coupling at one end opening thereof and with an area ...
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WO/2014/126476A1 |
A fluid pressure driven, high frequency percussion hammer for drilling in hard formations is presented. The hammer piston (20) of the percussion hammer has a relatively large and longitudinally extending bore (41) that provides minimal f...
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WO/2014/126774A1 |
A driveshaft (100) for a downhole motor (30) has a longitudinal axis and includes a first end (120a). In addition, the driveshaft includes a second end (120b) opposite the first end. The first end has a radially outer surface including a...
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WO/2014/116934A1 |
A method of hydraulically activating a mechanically operated wellbore tool in a bottom hole assembly includes: holding moveable elements of the wellbore tool in an unactivated position using a shear pin; inserting one or more drop balls ...
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WO/2014/113315A1 |
Methods and apparatus for drilling a wellbore with a casing string include coupling an outer drill bit to a casing string and aligning an inner drill bit to the outer drill bit. A retention mechanism is activated to couple the inner dril...
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WO/2014/113025A1 |
A multi-stage setting tool actuated by hydrostatic pressure downhole is provided with a selectable force-time profile during setting. A first port opens a first piston chamber to hydrostatic pressure which drives a first piston. A force-...
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WO/2014/110489A1 |
The present disclosure is for a vibratory downhole rotary apparatus. The apparatus includes a cylindrical hollow body, a stator disposed within the cylindrical hollow body and a rotor disposed within the stator. The apparatus also includ...
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WO/2014/104608A1 |
The present invention relates to a hydraulic rotary hitting apparatus provided with a shock absorbing device for firmly maintaining the contact between a drill bit and an object to be drilled during boring by means of a hydraulic process...
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WO/2014/105072A1 |
A downhole drilling assembly includes a drill string having an inner fluid passageway. A fluid motor disposed within the drill string has a rotor operable to rotate relative to a stator in response to a circulating fluid received via the...
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WO/2014/105053A1 |
Disclosed embodiments include a bladeless generator carried by drilling string and disposed to employ mud flow through the drill string or return flow along the exterior of the drill string to drive the bladeless generator utilizing the ...
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WO/2014/105034A1 |
Disclosed are systems and methods of balancing weight distribution between downhole cutting tools. One system includes a drill bit (102) arranged at a distal end of the bottom-hole assembly (100), a first sensor sub (112a) arranged proxi...
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WO/2014/098899A1 |
Disclosed are systems and methods for prevent backdriving of a mud motor through its output. One disclosed mud motor may include a housing having a longitudinal axis, a rotor disposed within the housing and configured to rotate generally...
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WO/2014/099783A1 |
A technique facilitates control over the actuation of a device by utilizing a rotor and a corresponding stator system. The rotor is rotatably mounted in the stator system, and rotation of the rotor relative to the stator system is correl...
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WO/2014/100255A1 |
Electrocrushing drills and methods for operating electrocrushing drills. Electrocrushing drill bits comprise one or more high voltage electrodes surrounded by a ground or current return structure, which can be a ring or a comprise rod sh...
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WO/2014/099390A1 |
A technique facilitates conveyance of equipment along a wellbore or other tubular structure. A tractor is provided with a plurality of wheels oriented to engage a surrounding wall. Rotation of the wheels drives the tractor and causes lon...
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WO/2014/099789A1 |
A technique facilitates control over the actuation of a device by utilizing a rotor and a corresponding stator system. The technique employs a rotor and a corresponding stator component in a progressive cavity type system. The rotor and ...
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WO/2014/092387A1 |
The present invention relates to an impact buffering device for a hydraulic rotating impact apparatus. The impact buffering device installed in the impact apparatus includes: a lower diameter part and an upper diameter part; a collar par...
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WO/2014/087371A1 |
A method is provided for controlling a managed pressure drilling system. The method comprises providing a fast system interpretation model for the operation of the managed pressure drilling system,obtaining real-time measurements from on...
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WO/2014/089457A2 |
A drilling assembly of a downhole drilling tool for drilling a wellbore is provided. The drilling assembly includes a hammer motor, a shaft, a driver, and a hammer. The drilling assembly positionable about the bottom hole assembly and ro...
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WO/2014/087370A1 |
Method for controlling bottomhole pressure in a borehole during managed pressure drilling. In the drilling procedure fluid is circulated down a drillstring and and to surface through an annulus between the drillstring and an inner-wall o...
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WO/2014/085447A1 |
A downhole tool comprises a housing having a longitudinal bore and an agitator assembly disposed within the longitudinal bore of the housing. A removable component is disposed within the longitudinal bore and can be removed from the hous...
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