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WO/2021/245592A1 |
A turbine current generator (1) of the type comprising a stator and a rotor, comprises: a hollow bearing cylinder (2) which can be engaged inside a pipe or a duct for the transit of a fluid, in particular a fluid transit duct deriving fr...
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WO/2021/245065A1 |
A piston guiding element, rock drilling machine and method for supporting a front end portion of a percussion piston of a rock drilling machine. The element (20) comprises a braking recess (16) at its rear end (24). The element further c...
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WO/2021/242244A1 |
A sealing device comprising an expanding metal provides for ongoing self-healing capability for use as a seal in conjunction with any downhole device or tool in wellbore applications. The sealing device may be a ferrule, or other type of...
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WO/2021/239735A1 |
A thrust bearing is described comprising first and second bearing assemblies (15, 17) rotatable relative to each and a plurality of axially arranged bearing stages (14a, 14b) formed between the first and second bearing assemblies (15, 17...
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WO/2021/237268A1 |
Disclosed herein are a method and system for controlling a drill rig by utilising a drill control module. A drill control module for controlling functionality of a drill rig comprises: a processor; a storage medium for storing a computer...
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WO/2021/236587A1 |
An axial bearing is designed to work in a liner hangar in which radial package space is at a premium. Rollers axially separate two washers. To hold the bearing together prior to installation, a sleeve radially surrounds the rollers and h...
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WO/2021/233991A1 |
A down the hole drilling assembly having a top end arranged for coupling to a drill string and bottom cutting end, the drilling assembly comprising: an elongate casing; a fluid powered piston arranged moveably inside the casing which is ...
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WO/2021/231245A1 |
A rotating control device (RCD) system includes a housing having a bore, a seal element positioned within the housing, a piston assembly supported within the housing and configured to drive the seal element to seal the bore, and a bearin...
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WO/2021/226220A1 |
A resource exploration and recovery system includes a first system and a second system extending into a wellbore. The second system includes a completion having a casing defining a wellbore internal diameter. Chemical injection tubing ex...
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WO/2021/224391A1 |
The invention relates to a drilling turbine (1) having a housing (2) in which a drive shaft (6) is mounted in a rotatable manner, and having a turbine impeller (3) which is set up to set the drive shaft (6) in rotation, wherein the drive...
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WO/2021/226068A1 |
A drill string system includes a drill bit disposed at a distal end of a drill string. A clutch is coupled with the drill bit. A mud motor is coupled to the clutch, and the mud motor is operable to receive a drilling fluid therein and tr...
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WO/2021/206991A1 |
Devices, systems, and methods for stabilizing a gyroscopic sensor include bearings supporting a MEMS-type gyroscope located in a shell. The shell rotates around a secondary shaft connected to an extension arm of a primary shaft. A biasin...
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WO/2021/202484A1 |
A torsional damping system includes a housing having an interior space. An inertia ring is located in the interior space, and a torsion fluid is located between the inertia ring and the housing. The inertia ring is rotatably installed re...
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WO/2021/198038A1 |
The present invention relates to a fluid-operated percussion drill tool (1) comprising an outer wear sleeve (2) comprising a substantially cylindrical wall (3) and having inner (4) and outer (5) surfaces. The tool also comprises a percus...
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WO/2021/190787A1 |
The invention relates to a self-propelled valve actuator on a rail transport system for manifolds and Christmas trees. The valve actuator is moveable along a transport rail and may operate several valves. The valve actuator is driven by ...
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WO/2021/179063A1 |
A machine and method for making underground excavations in rock, The machine comprises hydraulic percussion hammers which drive drill bits into the rock face to be bored. A hydraulic power unit (HPU) is located on the machine. The HPU po...
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WO/2021/178947A1 |
Apparatus and methods for automating well construction operations based on detected abnormal events. A method may comprise commencing operation of an equipment controller of a control system for monitoring and controlling a well construc...
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WO/2021/178786A1 |
A fluid pulse generator can include a fluid motor including a rotor that rotates in response to fluid flow, a variable flow restrictor positioned upstream of the fluid motor and including a restrictor member rotatable relative to a porte...
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WO/2021/170653A1 |
A rotary drive (1) comprises at least one stage, the at least one stage comprising a stator (4) and a rotor (6), the rotor (6) disposed within the stator (4), wherein a cavity (16) is defined between the stator (4) and the rotor (6), and...
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WO/2021/164091A1 |
A circumferential impact drill anti-jamming device and method, the method comprising: using pressure generated by high-pressure water such that a pressure difference is generated between upper and lower ends of a piston (51) on an impact...
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WO/2021/159621A1 |
A two-stage boosting hydraulic impactor, comprising an outer tube (2), an anvil (9), and an impact hammer (8). A nozzle seat (3) is mounted in the outer tube (2). A lower end of the nozzle seat (3) is inserted into a tail hole of the imp...
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WO/2021/159620A1 |
A double-liquid driven rotary percussion drilling impactor, comprising an outer pipe, an impact hammer (27), and an anvil (31). The drilling impactor further comprises: a mud motor mounted in the outer pipe; a sealed hydraulic system ass...
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WO/2021/158280A1 |
A downhole tool for performing an acid stimulation operation includes a chamber and at least one acid resistant container to store a stimulation fluid comprising a stimulation acid. The at least one acid resistant container can be placed...
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WO/2021/156049A1 |
The invention relates to a downhole drill for creating a borehole in the ground, having a drill head for removing ground material; a drill string, to the bottom end of which the drill head is attached; a rotary drive device for rotatingl...
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WO/2021/155086A1 |
A method can include receiving data for a borehole trajectory in a formation, a length of pipe, and a bottom hole assembly that includes a mud motor and a bit; generating a sequence for operation of the mud motor using a model of at leas...
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WO/2021/141899A1 |
A pressure pulse system includes a stator, a rotor rotatably positioned in the stator, and a valve assembly configured to induce a pressure pulse in response to rotation of the rotor within the stator, wherein the valve assembly includes...
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WO/2021/137922A1 |
A mechanically locking hydraulic jar device includes an outer sleeve, an inner sleeve partially disposed in an inner bore of the outer sleeve, and a mechanical lock engaging the outer sleeve and the inner sleeve in a default position to ...
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WO/2021/127631A1 |
An isolation device for use with a casing gas separator. The device incorporates multiple cups, some upward-facing and others downward-facing. The downward-facing cup or cups seal against an internal surface of the casing gas separator t...
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WO/2021/120721A1 |
Disclosed is a well drilling acceleration tool (1), comprising: an upstream drilling tool (10), the upstream drilling tool comprising a drive motor and a first drive rod (15) jointed to the drive motor, wherein the first drive rod extend...
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WO/2021/120723A1 |
A drilling speed increasing device (100), comprising: an outer barrel (1); a rotating spindle (4) provided in an inner cavity of the outer barrel and capable of rotating about its axis; an output spindle (7) provided at the lower end of ...
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WO/2021/126899A1 |
A stator for a mud motor and methods for manufacturing and using the same, of which one such method includes obtaining a mud motor having a stator made at least partially from a rubber. At least a portion of the rubber is cured by at mos...
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WO/2021/120722A1 |
A drilling tool, comprising an outer cylinder (1); a power rotary shaft (13), provided in an inner cavity of the outer cylinder (1), the power rotary shaft (13) being able to be driven to rotate around the axis thereof; an impact generat...
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WO/2021/120720A1 |
A well drilling tool and a method for determining a parameter thereof. The well drilling tool (1) comprises an upstream drilling tool (10), a downstream drilling bit, and an impactor (30); the impactor (30) is connected between the upstr...
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WO/2021/126909A1 |
A drilling motor system for drilling a subterranean well includes a stator tube, the stator tube being an elongated tubular member with a central stator bore. A stator elastomer layer is located within the central stator bore, lining a w...
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WO/2021/112919A1 |
A rotor catch system includes a catch stem having a proximal end coupled to a rotor of a mud motor system and a distal end positioned within a sub housing of a drill string, a catch feature having a top portion and a spindle portion exte...
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WO/2021/097011A1 |
A torque transfer system includes a drive shaft threaded into a housing. The drive shaft includes shaft splines. The housing includes housing splines. A sleeve includes inner splines and outer splines. The inner splines are configured to...
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WO/2021/092544A1 |
Methods, systems, and apparatus for imparting and limiting hypocycloidal, lateral, and torsional forces onto drill bits are provided, including hypocycloidal bearings for limiting hypocycloidal motion, lateral impulse mechanisms for impa...
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WO/2021/081598A1 |
A sealing system (10), operable with a reverse circulation drill string, comprises a mandrel or body (12) having a fluid supply path (14) and a fluid return path (16). A seal mechanism (22) is configured to circumferentially surround a p...
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WO/2021/086251A1 |
The invention relates to a pneumatically operated drill hammer, comprising a piston and a distributor axially arranged relative each other in a housing, the piston being arranged to be moved axially between a first position and a second ...
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WO/2021/086334A1 |
Downhole tractor control systems and methods to adjust a load of a downhole motor to drive one or more wheels of the downhole tractor are disclosed. A method to adjust a load of a downhole motor includes receiving a user input of a desir...
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WO/2021/087347A1 |
A downhole mud motor includes a driveshaft housing, a driveshaft rotatably disposed in the driveshaft housing, a bearing mandrel coupled to the driveshaft, and a bend adjustment assembly including a first position, wherein the bend adjus...
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WO/2021/077584A1 |
An all-metal downhole motor based on a multi-stage double plunger-eccentric gear mechanism, comprising a flow distribution shaft (8), an outer pipe (1), and a multi-stage eccentric gear driving mechanism which are arranged coaxially. The...
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WO/2021/070057A1 |
A multifunctional drilling enhancement tool (200) includes a shaft (202) having a bore (201) extending along a longitudinal direction (X); a main cutting device (210) rotatably and slidably attached to the shaft (202); a first housing (2...
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WO/2021/062483A1 |
A liquid hammer drill comprising: a housing; a drill bit at a leading end of said housing wherein said drill bit includes a trailing end and a leading end that defines a cutting portion; a piston member located inside said housing and ha...
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WO/2021/035127A1 |
The present disclosure is directed to improved downhole motor designs. In one illustrative embodiment, primary and secondary thrust bearings that are maintained in position by other structural components of the motor without compressive ...
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WO/2021/016723A1 |
An apparatus for controlling tool face and methods of use with a torque generator connected to a drill string for drilling linear and nonlinear subterranean bore segments. In some embodiments, the apparatus and methodologies of use compr...
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WO/2021/016282A1 |
Embodiments disclosed herein are directed to a flow pulsing system including a rotor, a stator, a dart which is configured to releasably couple with the rotor, and a nozzle releasably coupled to the rotor which is configured to control a...
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WO/2021/003536A1 |
A return exhaust assembly (50) for a reverse circulation hammer H comprises return tube (52) having first and second ends and a seat (56) at or near the first end (54). An exhaust sleeve (58) has: a section (60) seated and resiliently su...
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WO/2020/263853A1 |
An improved swivel with increased sealing capability at fluid pressures up to 20 ksi and at fluid temperatures as high as 250°F and as low as 35°F. The swivel may be relatively compact, being less than 8 feet in overall length and can ...
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WO/2020/261197A1 |
Method for drilling a wellbore (1) with a constant diameter, wherein is provided a drilling device and several unexpanded casing sections (5), wherein the drilling device is suspended by a cable (2) and comprises a drilling tool and an e...
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