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WO/2021/032461A1 |
The invention relates to a kelly bar arrangement for a drilling device and to method for working the ground with a drilling device. A tubular external kelly bar and an internal kelly bar, which is displaceably mounted within the external...
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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/2021/034801A1 |
A sidetrack window (210) is cut in a cased wellbore (102) by disposing a sidetracking assembly (100) within the cased wellbore. A first ball (130) is deployed into a drill string (106) of the sidetracking assembly. The first ball leaves ...
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WO/2021/030043A1 |
Provided, in one aspect, is a drillable window assembly. The drillable window assembly, in this aspect, includes a first precut casing joint, the first precut casing joint including a first casing tubular having two or more radially offs...
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WO/2021/030594A1 |
A method and apparatus for igniting a power charge in downhole wellbore using an ignition propellant mixed with a main propellant.
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WO/2021/028383A1 |
The invention relates to an underground drilling rig (10) and to a method for erecting same, wherein the method, in one specific embodiment, comprises erecting a mast structure (20) of the drilling rig (10) starting from a horizontal tun...
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WO/2021/023528A1 |
A semi-submersible floating offshore vessel has a deckbox structure with a main deckbox bottom extending underneath a lower deck. The deckbox structure comprises a recessed cellar deck structure that protrudes below the main deckbox bott...
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WO/2021/024356A1 |
Provided is a bubble generating device that generates high-quality and consistent bubbles, and a drilling device provided with the bubble generating device.　This bubble generating device (1) is a device for generating bubbles used in a...
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WO/2021/022091A1 |
A centralizer for use in high speed rotor dynamics applications includes a housing having a first end portion and a second end portion. The centralizer further includes a rotatable shaft positioned within a cavity of the housing. The cen...
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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/2021/016884A1 |
An open-air hydraulic rock drilling machine based on a loader (5). The open-air hydraulic rock drilling machine comprises a loader (5), a big arm device (2) is mounted at a front axle position of the loader (5), the big arm device (2) is...
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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/2021/014473A1 |
Locking and rotating device, twister, for tubular casing elements for vertical excavations. Mechanical locking and rotating device also known as twister, consisting of three elements coaxially connected one inside the other (1, 9, 19), b...
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WO/2021/016309A1 |
A method for drilling a subterranean wellbore includes rotating a drill string in the wellbore to drill. The drill string includes a roll-stabilized housing deployed in a drill collar and survey sensors deployed in the roll-stabilized ho...
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WO/2021/016376A1 |
A planning tool plans movement of a boring tool for an underground drilling operation. The planning tool includes one or more wheels for rolling on a surface of the ground along a path responsive to movement by an operator to characteriz...
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WO/2021/007656A1 |
A system, apparatus, and method for leveling a borehole or blasthole drilling machine (100), or portion thereof, provided over a drilling site (300) can implement a ground contact detect phase or operation (S502), a first coarse leveling...
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WO/2021/011295A1 |
A method of forming a casing window in a casing tubular includes introducing a bottom hole assembly (BHA) into a casing tubular, running the bottom hole assembly to a selected position in the casing tubular, directing an ultrasonic wave ...
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WO/2021/011872A1 |
A method of estimating a directional parameter of a downhole component includes deploying a borehole string in a borehole, the borehole string including the downhole component, the downhole component being rotatable, the downhole compone...
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WO/2021/007556A1 |
A downhole assembly that includes tubulars rotationally coupled to one another. An interface is between adjacent tubulars that makes up at least a portion of the rotational coupling. Certain surfaces of adjacent tubulars come into contac...
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WO/2021/007509A1 |
A guide for a top drive unit includes a lower track member connected to a lower mast section and an upper track member connected to an upper mast section and telescoped with the lower track section. A slider is slidably positioned about ...
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WO/2021/006800A1 |
The present invention relates to a method for estimating wear of a drill bit in percussive rock drilling, wherein a percussion device (106) is configured for generating shock waves in a drill bit (108) for breaking rock; the method compr...
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WO/2021/003242A1 |
A reamer for drill string pullback of a horizontal directional drill includes a shaft portion defining a central axis and a first end configured for attachment with a drill string of the horizontal directional drill. A plurality of vanes...
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WO/2020/257913A1 |
Guidance methods for guiding the drilling of wells while reducing trajectory drift. Each drilled well incorporates signalling devices which are used together or in a selected sequence to guide additional well drilling. With the progressi...
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WO/2020/263252A1 |
Techniques for estimating a current inclination and azimuth of a drill bit of a wellbore drilling system are described. The estimates for the current inclination and azimuth are generated using measurements obtained for one or more param...
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WO/2020/264414A1 |
A running tool for installing a casing hanger down a wellbore incorporates an interchangeable landing sub component that engages the tubular body component with a standard threaded coupling that can be disengaged without the use of a too...
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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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WO/2020/257263A1 |
An aspect of the present disclosure provides a system for directional drilling in downhole environments, the system includes a processor and a memory. The memory includes instructions, which, when executed by the processor, cause the sys...
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WO/2020/252597A1 |
Systems and methodologies are provided for simultaneously milling obstructions from within a subterranean wellbore while pumping the milled obstructions and debris from the wellbore to the surface. The present systems and methodologies a...
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WO/2020/256790A1 |
The embodiments include systems and methods to determine torque and drag of a string. A method includes analyzing a plurality of continuous segments of a string deployed in a wellbore, and determining a deflection of the plurality of con...
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WO/2020/252139A1 |
A method for deploying a payload at a subaquatic deployment location includes submersing a submersible aquatic vehicle in a body of water. The submersible aquatic vehicle carries a payload. The method also includes driving the submersibl...
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WO/2020/244665A1 |
Disclosed is a rotary steering well-drilling tool based on a bit pressure steering transmission structure, belonging to the technical field of well-drilling devices. The rotary steering drill tool comprises a bit pressure steering transm...
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WO/2020/245408A1 |
A method of retrofitting an existing offshore drilling vessel for performing subsea wellbore related activities along a vertical firing line, wherein the existing offshore drilling vessel has a floating hull provided with a moonpool, and...
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WO/2020/244671A1 |
Disclosed is a hybrid rotary steerable drilling system capable of easily deflecting, comprising a front bearing main body (1), a weight on bit and torque deflection transfer pup joint (2) and a deflection control system (3), wherein the ...
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WO/2020/245426A1 |
The first aspect of the present invention relates to an offshore drilling system and a method for performing subsea wellbore related activities involving a riser extending between the vessel and a subsea wellbore. The offshore drilling s...
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WO/2020/244629A1 |
A rotary guide device, which comprises a rotary guide sub (1) and at least one set of universal drill pressure transfer subs (2). The rotary guide sub (1) at least comprises a mandrel (11), a guide sleeve (12), and a deflection control a...
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WO/2020/243239A1 |
Systems and methods for performing slide drilling and for determining operational parameters to be utilized during slide drilling. An example method includes commencing operation of a processing device, whereby the processing device dete...
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WO/2020/242685A1 |
A trailer assembly for carrying coiled tubing includes a main beam assembly extending from a forward end of the trailer assembly to a rear end of the trailer assembly. The main beam assembly includes a forward portion that extends from t...
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WO/2020/234635A1 |
An integrated drilling and reaming tool for extracting geological core samples for mining exploration is provided. The tool comprises a drilling component for drilling through rock, the drilling component comprising a tubular body having...
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WO/2020/234202A1 |
The invention relates to a drill head (1) for electro-pulse-boring. The drill head (1) comprises a high-voltage pulse generator enclosed in a hermetically sealed container (10) and a drill bit mechanically coupled to the container (10). ...
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WO/2020/234859A1 |
A drilling hole correction tool having an internal push rod; an external guide cylinder; a shear pin; an internal locking pin; and a foot. A method for correcting drill hole comprises: raising the rods to 3.0 m above the bottom; removing...
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WO/2020/233473A1 |
A drilling rig and a matching drill pipe (5) for use with same. The drilling rig comprises a gear-type pneumatic motor (1), a decelerator (2), a power shaft (3), a rotary seal device (4) and a matching drill pipe (5) for use with same. A...
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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/2020/231996A1 |
A closed-loop hydraulic drilling system generates choke characteristic curves or data that more accurately reflects the relationship between the commanded choke valve position and the resulting pressure drop across the choke valve for a ...
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WO/2020/231978A1 |
A horizontal directional drilling machine includes a frame providing a base, a rack movable to different drilling angles with respect to the base, and a carriage having a rotating assembly for engaging a drill rod, the carriage being mov...
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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/2020/227306A1 |
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/2020/222890A1 |
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/2020/219009A1 |
A downhole apparatus comprises a casing string with a fluid barrier connected in the casing string. A degradable plug is positioned in the casing string above the fluid barrier. The degradable plug and fluid barrier define upper and lowe...
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WO/2020/214207A1 |
A pressure generating device for use in downhole drilling operations includes a rotating valve portion having a first body with at least one first flow channel, and a stationary valve portion having a second body with at least one second...
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WO/2020/214639A1 |
A mast for a drilling rig and a method for operation thereof, in which the mast includes a first leg, a second leg, and a mast leg actuator coupled to the first leg and the second leg. The mast leg actuator is configured to expand so as ...
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