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WO/2020/254457A1 |
A down the hole drilling assembly having an elongate casing, a fluid powered piston, top and bottom working chambers, a plurality of fluid passages and an exhaust system wherein the sum of the top work area and a top intermediate work ar...
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WO/2020/254458A1 |
A down the hole drilling assembly comprising a drill tube adapter, an elongate casing, a fluid powered piston, a top working chamber, a bottom working chamber, a top sub and an exhaust system wherein the exhaust system (58) is moveable w...
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WO/2020/243767A1 |
There is disclosed a device for boring holes in a ground surface comprising: a core barrel having a barrel top and an open barrel bottom, the barrel top having a shaft mounted thereto for engaging with a rotary power source for rotating ...
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WO/2020/233127A1 |
Disclosed is an efficient rotary drilling drill bit device with combined drilling and stirring for a large-section open caisson. The rotary drilling drill bit device comprises a gear transmission box (10), a driving gear (11), driven gea...
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WO/2020/236430A1 |
A control unit includes a rotatable tubular body that rotates around a spindle. A torque transfer unit may be attached to the tubular body and the spindle. A force applied to the torque transfer unit by a biasing element may control a fi...
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WO/2020/224510A1 |
A rotary steering tool, comprising: a power unit (130) having an output shaft capable of outputting torque and a bias driving part capable of outputting a radial force and/or an axial force; a transmission shaft (1202) connected to the o...
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WO/2020/226738A1 |
Methods and apparatus for providing compliance in bearings of rotating machinery are provided. The rotating machinery may include a drive shaft movably coupled within a bearing housing. Compliant bearing assemblies may interface engageme...
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WO/2020/227306A1 |
A drilling assembly includes a hydraulic amplifier assembly, a driver, a bearing housing, and a shaft. The hydraulic amplifier assembly is configured to increase a pressure of a drilling fluid so as to produce a pressurized drilling flui...
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WO/2020/226989A1 |
A downhole tool includes a housing and a housing chamber. The housing chamber is separated from a fluid chamber by a seal. The seal maintains a pressure differential between the housing chamber and the fluid chamber. A pressure adjuster ...
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WO/2020/222890A1 |
A vibration assembly includes a valve above a rotor and stator. The rotor rotates within the stator as fluid flows therethrough. The valve includes a rotating valve segment, which rotates with the rotor, and a non-rotating valve segment ...
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WO/2020/207616A1 |
In a method and a device (1) for drilling holes, in particular by means of percussive or rotary percussive drilling, in ground material or rock material (3), wherein a bore crown (5) mounted on a drilling rod (4) forms a borehole (2) and...
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WO/2020/208113A1 |
The present invention relates to an apparatus (100) for increasing a pressure of a working fluid (AF) for a drilling system (150) for drilling a borehole (160). The apparatus (100) has a tubular housing (120) for mounting in a tubular dr...
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WO/2020/210482A1 |
A downhole-type device includes a fluid-end with a fluid rotor configured to move or be rotated by wellbore fluids. A fluid stator surrounds and supports the fluid rotor. A first bearing couples the fluid rotor to the fluid stator. A sec...
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WO/2020/198812A1 |
There is disclosed a torque transfer apparatus for a mineral drilling tool used in a downhole assembly of a drill string. The drilling tool has a downhole drill bit and one or more uphole drill bits spaced apart from the downhole drill b...
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WO/2020/197970A1 |
An apparatus for use in a wellbore includes a drill string section, a drive shaft disposed in the drill string section, a bearing assembly connected to the drive shaft, and an alignment assembly connecting the bearing assembly to the dri...
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WO/2020/198000A1 |
An apparatus for use in a drill string configured for use in a subterranean formation includes a drive shaft coupled to a drill bit, the drill bit configured to continuously rotate and penetrate within the subterranean formation, a drill...
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WO/2020/188481A1 |
A plug and abandonment wellbore intervention technology to longitudinal and circumferential cut a wellbore tubular (30) in the same wellbore intervention, followed by dropping the cut sections into the wellbore below the location of the ...
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WO/2020/185749A1 |
A progressing cavity device includes a stator including a first end, a second end, and an inner surface formed from a metallic material that extends between the first end and the second end, and a rotor rotatably disposed in the stator, ...
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WO/2020/183031A1 |
A rock drilling arrangement (100), comprising an impact device (1) comprising a frame (2) pressure chambers (3a, 3b) in the frame (2), and a piston (4) arranged in the impact device (1). The arrangement further comprises a rear mounting ...
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WO/2020/185149A1 |
Herein is described an arrangement to control the movement speed of a percussive element (6) which is arranged to move in a housing (1 ) of a drilling machine, where the percussive element (6) comprises a brake surface (13), wherein the ...
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WO/2020/180687A1 |
A method comprises rotating a drill bit of a drilling system at at least 1000 rpm. The drill system can comprise a drill feed, a drill head comprising a motor and coupled to the drill feed, a drill string, comprising at least one drill r...
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WO/2020/169255A1 |
The present invention relates to methods and systems for establishing a well foundation as well as for drilling and installation of a surface casing (21) without any use of a drilling rig.
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WO/2020/163272A1 |
A wellbore radial positioning apparatus includes a tool body and a motor that actuates a traction wheel. The tool body is configured to be positioned within a wellbore. The motor driving the traction wheel is connected to the tool body a...
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WO/2020/150776A1 |
A drill string (10) suitable for a reverse circulation drilling system has an up-hole end (104) and a downhole end (102) and a first fluid path (16) and a second fluid path (18) isolated from the first fluid path that run between the up ...
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WO/2020/150082A1 |
A progressive cavity pump or motor comprising: a stator comprising: a stator assembly having a radially outer surface and a radially inner surface defining a helical-shaped stator through-bore extending axially through the stator; and a ...
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WO/2020/148333A1 |
The invention relates to a rock drilling system (10) for geothermal drilling. The rock drilling system (10) comprises a drilling rig (2) with a drill string (22) and a drilling hammer (4) for drilling a borehole (9); at least one air com...
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WO/2020/126359A1 |
The present disclosure relates to a down-the-hole drilling assembly (11) activated by fluid under pressure. An elongated casing (15) having an axially rearward end (15a) and an axially forward end, a fluid-powered piston (13) arranged mo...
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WO/2020/126358A1 |
The present disclosure relates to a rock drill bit 14 for percussive drilling hammer 11 positioned at the cutting end of the hammer. A head 19, an elongated shank 17 connected to the head 19 at a front end of the bit 14, a head-shank tra...
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WO/2020/118785A1 |
A drilling device and a drilling method therefor. A mounting cylinder (5) is disposed in a housing (12), a motor (4) is mounted in the mounting cylinder (5), a shafting (7) is rotatably mounted in the mounting cylinder (5), one end is co...
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WO/2020/115484A1 |
Apparatus for boring in a bore hole, comprises: one or more conveying means (20a, 20b, 26, 16, 15a, 15b); for the or each conveying means, a plurality of cutting means (24). The or each conveying means is arranged to move the respective ...
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WO/2020/118225A1 |
A motor includes one or more actuator, one or more one passive members, and one or more pushing members. The actuator(s) vibrate along a first axis. The vibrations vary a dimension of the actuator(s) as measured along the first axis. The...
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WO/2020/104527A1 |
The present invention relates to a drill bit assembly for fluid-operated percussion drill tools comprising a percussion bit having a head portion and a bit retaining portion. Engagement means are provided on the head portion engageable w...
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WO/2020/096780A1 |
A mud-lubricated bearing section including a seal assembly for directing a fluid flowing through a mud-lubricated bearing into a central bore of a mandrel. At least one mud- lubricated bearing is positioned in an annular space between th...
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WO/2020/093413A1 |
A control mechanism of a core drilling rig, comprising: a central rod (14) and an outer barrel (23). The central rod (14) passes through, from the rear to the front, the inner cavities of a fluid channel activation module, an outer barre...
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WO/2020/092746A1 |
A method for forming a seal boot includes forming a stack of discrete, non-intertwined layers by layering a sheet of elastomeric material with a fabric; rolling the stack to form a tube; installing the tube within a mold; closing the mol...
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WO/2020/086078A1 |
A system for providing support in a downhole motor, the system includes a stator housing including an end, a stator contour within the stator housing, a rotor including a rotor end and lobes configured to engage with the stator contour t...
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WO/2020/087084A1 |
A friction reducing tool (FRT) for reciprocating a drill string, the FRT including an outer housing having a central axis, a first end, a second end opposite the first end, and a passage extending axially from the first end to the second...
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WO/2020/063079A1 |
Disclosed is a double-walled drill pipe, comprising: an outer drill pipe (1), comprising an axial through-hole, and a wall face through-hole (12A) arranged in a wall face of the outer drill pipe (1) to communicate the outside of the doub...
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WO/2020/058926A1 |
A hydraulic rock drill (200) has an impact mechanism (202) with a reciprocating piston (208) arranged to strike a slidably supported anvil (252) in an impact chamber (260). An anvil chamber (250) is provided to a front side of the impact...
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WO/2020/055911A1 |
A system and method for optimizing drilling with a votary steerable system may monitor downhole signals associated with vibrational loads along a drill string during drilling. A downhole controller at a rotary steerable bottom-hole adapt...
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WO/2020/046518A2 |
A downhole drilling system is disclosed. The downhole drilling system may include an axial-field multi-armature alternator system, mechanically driven by a turbine; a pulse-generating circuit electrically coupled to the axial-field multi...
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WO/2020/039393A1 |
An impact mechanism (100) has a cylindrical poppet valve (112) provided in a valve chamber (114) located in a sidewall of a drive chamber (110). A switching seal (116) is located in a return chamber (108). A fluid inlet is connected to t...
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WO/2020/028188A1 |
A thrust bearing assembly is provided, including a thrust ring defining a thrust face and an opposing thrust ring defining an opposing thrust face. At least one polycrystalline diamond element is coupled with the thrust face and defines ...
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WO/2020/028674A1 |
A tubular engagement interface for interfacing the coupling of two movably engaged tubulars is disclosed. The tubular engagement interface includes a body. The body includes a body engagement surface. A poly crystalline diamond element i...
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WO/2020/025948A1 |
A single trip casing cutting and pulling assembly which includes a casing spear (12), a mud motor (16) and a casing cutter (18), wherein a valve (14) is located between the casing spear (12) and the mud motor (16). The casing spear is op...
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WO/2020/028186A1 |
A radial bearing assembly is provided. The radial bearing assembly includes poly crystalline diamond elements, each having an engagement surface in sliding engagement with an opposing engagement surface. The opposing engagement surface i...
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WO/2020/023825A1 |
A retrievable string is positioned in a stator of a completion string installed in a well. The retrievable string includes a rotating portion and a non-rotating portion. The rotating portion includes a rotor and an impeller coupled to th...
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WO/2020/018240A1 |
A propulsion unit for a wellbore tool includes a tool body and at least one wheel section disposed along the tool body. The wheel section comprises a tractor pad movably coupled to a tractor housing coupled to the tool body. The tractor ...
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WO/2020/014638A1 |
A downhole motor for drilling a borehole includes a stator assembly including a helical-shaped stator, a rotor assembly rotatably disposed in the stator assembly, wherein the rotor assembly includes a helical-shaped rotor, and a sensor p...
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WO/2020/007716A1 |
The present invention relates to a drilling apparatus, in particular in the form of a kelly drilling rig, comprising a drilling tool holder for holding a drill rod, in particular a kelly bar, which can be rotatably driven by a rotary dri...
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