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Patent Searching and Data


Matches 51 - 100 out of 13,893

Document Document Title
WO/2021/102829A1
A borehole wall protection assembly (100), a borehole wall protection device (200) comprising the same, and a borehole wall protection method. The borehole wall protection assembly (100) is used together with a drilling tool (60). The bo...  
WO/2021/107771A1
A subsea vertical drilling machine is disclosed, having: - a drill assembly formed by: a riser pipe having a first end, a second end, and a length extending between the first and second ends; and a drilling machine body, including a dril...  
WO/2021/108251A1
A hard facing is preferably accomplished with laser clad beads applied to horizontal directional drilling (HDD) component(s). These components may be subject to recirculating fluid regions associated to stepped geometries along a drill s...  
WO/2021/103768A1
A hole-drilling mechanical arm. The center of a rotating base (9) serves as a circle center, the mechanical arm serves as a radius, and height determination is performed in a circle-drawing mode, ensuring the perpendicularity of the hole...  
WO/2021/108301A1
The present disclosure relates to a friction reduction tool having a housing for connecting the friction reduction tool to a drill string or coiled tubing; a force converter within the housing and having a stator, a helical rotor, and a ...  
WO/2021/101579A1
A sidetracking assembly employs a running tool for engaging the whipstock and providing structural support and fluid communication through the running tool. A cement tube operates in selective fluid communication with the running tool bo...  
WO/2021/097972A1
Disclosed is a drill bit providing a combined effect of an induced load and an abrasive jet. The drill bit utilizes an outer annular drill bit (2) for pilot bore rock breaking, utilizes a center drill bit (3) mounted at the middle of the...  
WO/2021/097198A1
A directional tool and method of surveying a wellbore with the directional tool in a borehole string. A first sensor of the directional tool is disposed in a non-homogeneous ambient magnetic field. A first applied magnetic field is appli...  
WO/2021/097236A1
Systems for forming or extending a tunnel or shaft within a working surface may include a ram accelerator assembly for accelerating a projectile into geologic material to weaken a region of the geologic material. A cutting tool may then ...  
WO/2021/094580A1
It is disclosed a satellite well structure (300) and method for expanding a subsea satellite well system. The subsea satellite well structure (300) comprising: - a seabed-based foundation (330) supporting a subsea wellhead (340); - a fir...  
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...  
WO/2021/088349A1
A method for excavating a tunnel shaft (1), by drilling a number of holes I (2) with smaller diameters, it is possible to predict groundwater and bad geology etc. in advance, which is convenient for confirming the degree of coincidence o...  
WO/2021/081592A1
The invention provides an apparatus and method for preventing surrounding loose rock fragments from falling or collapsing into a bore hole during drilling and immediately after removal of a drill string from the bore hole. The apparatus ...  
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...  
WO/2021/077155A1
Provided is an underground development drill return system (10) comprising a front limit sensor (12) and front sensor actuator (14) each configured for operative mounting at opposite ends of a forward drill feeder length (16) of a drilli...  
WO/2021/078993A1
The invention is related a floating mobile offshore drilling and a method of controlling a process automation system thereon. The floating mobile offshore drilling rig comprising a wave prediction system, a movement predictor unit, a pro...  
WO/2021/076133A1
A fluidic oscillator includes a vortex chamber in fluid communication with a flow volume, an outlet, a first control port, and a second control port. The flow volume is defined by a first wall and a second wall. The first wall and the se...  
WO/2021/076481A1
Systems/methods of identifying critical spare parts for equipment aboard a MODU employ a quantitative approach that also accounts for failure probability and potential consequences of a decision whether to stock a spare part. This approa...  
WO/2021/072569A1
A method for dealing with the locking in a hole of a traction pipe of a non-flat excavation horizontal directional drill and a sleeve device. The sleeve device comprises a drill rod connecting device (3), a device (1) separating attachme...  
WO/2021/069694A1
The invention relates to variation of concentrations of abrasive particles (92) in a stream (90) of drilling fluid mixed with abrasive particles, passed as an abrasive jet through abrasive nozzle(s) of a drill bit (10) along rotations th...  
WO/2021/071879A1
A method for completing a subterranean well with a smart completion system includes drilling the subterranean well to a first depth with a first drill string having a first drill string tubular and a first bottom hole assembly with a fir...  
WO/2021/069154A1
The invention relates to an underwater dredging device having a base frame, which can be placed on the bed of a body of water, at least one dredging unit, which is supported in a vertically displaceable manner on the base frame and is de...  
WO/2021/068557A1
Provided is a rotary drilling rig power head, provided with a drive module, a drill rod (10), a protective tube driver (15), an input member, a first output member, and a second output member; the drive module transmits power separately ...  
WO/2021/072352A1
A reamer includes a housing, a first reamer block, and a second reamer block. The first reamer block includes a leading wall. A second reamer block includes a trailing wall, the trailing wall including a recess. The leading wall is inser...  
WO/2021/067560A1
Systems and methods of optimizing a new well path using a minimum curvature method are disclosed. An arc of the new well path may include a change in curvature at a point along the length of the arc. The arc of the new well path may be d...  
WO/2021/066850A1
A method of managing water content of a pulsed power drilling fluid, the method comprising contacting the pulsed power drilling fluid with a water absorbent material, wherein the pulsed power drilling fluid comprises water at a first wat...  
WO/2021/068005A1
Methods, drilling systems, and computer-readable media for evaluating candidate correctional trajectories for a directional drilling well. If the user wishes to investigate alternatives trajectories or trajectories to get a BHA back to a...  
WO/2021/062486A1
In one aspect, a system (5) for use in providing an approximation or estimation of a characteristic (for example, a bulk density value) of a deposit subject to a drilling operation is disclosed. In one form, the system (5) comprises a pr...  
WO/2021/058817A1
An apparatus, rock drilling rig, method and computer program for executing navigation for a rock drilling rig in a mine tunnel. The rock drilling rig (5) is positioned at faces (9) of rounds (8) and is navigated before initiating drillin...  
WO/2021/061780A1
A hydrocarbon stabilization apparatus is described herein. The hydrocarbon stabilization apparatus comprises a vessel, a heat source deployed inside the vessel, and a surface area structure located inside the vessel. The surface area str...  
WO/2021/057116A1
A resistance reduction device, comprising a first mandrel (1), a first rotation device (7), a second rotation device (6), a second mandrel (10), a first moving device (11), a second moving device (12) and a first outer barrel (9). The fi...  
WO/2021/061395A1
Steering mechanisms for use in RSS systems may be devoid of an elastomeric piston seal. Pistons of the steering mechanisms have a convex cross-section that permit the piston to pivot along with a steering pad while moving laterally or ra...  
WO/2021/061103A1
The present disclosure relates to a pulsed-power drilling system that includes downhole mixers for restoring optimal electrical properties in drilling fluid. The downhole mixer may include a housing having an uphole and downhole end, a c...  
WO/2021/058812A1
The present invention concerns apparatus for effecting a change in direction during driving of a tubular (2) into a formation to establish a wellhead. The apparatus comprises a drive shoe (3) extendable from within a tubular, the drive s...  
WO/2021/053526A1
A drill assembly (10) for use in trenchless subterranean boring, comprising: a drill shoe (20) having a body with a posterior portion (30) and an anterior portion (22), the latter defining a recess while the former comprises drill bits (...  
WO/2021/048496A1
The present invention concerns a method for producing a borehole, in particular a large-diameter borehole, along a drilling axis, comprising the steps of: i) producing an exploration borehole along the drilling axis, ii) digging a hole i...  
WO/2021/048416A1
The invention provides a method of predicting the effect of heave on an offshore well operation performed from a floating offshore structure in a subsea well. The method includes providing heave motion data for the floating offshore stru...  
WO/2021/046308A1
A downhole tool for transmitting rotation to a casing string includes a tool body (402) having a bore (536) extending from a first end to a second end. The downhole tool also includes a cam (530) positioned within the tool body (402), th...  
WO/2021/038274A1
A method for aligning a tool face of a multi bend drilling apparatus and an adaptable directional multi bend drilling apparatus The present invention provides an apparatus and a method that allows building short and ultra- short curves, ...  
WO/2021/040529A1
A device for preventing torsion in a tool string from exceeding a predetermined threshold, wherein the device comprises: - an inner mandrel for transmitting torque between said inner mandrel and a first portion of the tool string, the in...  
WO/2021/041280A1
A cellar 12 around a wellbore 15 is formed or deepened with an excavating system 10 that is capable of being assembled around an existing wellbore 15. The system 10 includes an excavating unit 18 having an annular body 21 with a cutting ...  
WO/2021/038131A1
A drilling unit for drilling a hole, wherein the drilling unit comprising a drilling head (1). Said drilling head (1) further comprising pulling means (2) for pulling a casing (7) into the hole, a pilot bit (3) for drilling a center hole...  
WO/2021/035260A1
The invention relates to a method for producing a geothermal heat collector (1), wherein boreholes (2) are made in the ground (12) and then collector tubes (3) for heat exchange between a medium conducted in the collector tubes (3) and t...  
WO/2021/034769A1
A rotary drill bitb (200A) for use with a horizontal directional drill string. A coupler (206) at a proximal axial end is configured to attach the rotary drill bit to a drill head at a distal end of the drill string. A cutting portion at...  
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...  
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 ...  
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 ...  
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...  
WO/2021/030594A1
A method and apparatus for igniting a power charge in downhole wellbore using an ignition propellant mixed with a main propellant.  
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...  

Matches 51 - 100 out of 13,893