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Matches 701 - 750 out of 13,864

Document Document Title
WO/2017/137026A1
The invention relates to a low-maintenance, safe-operation drilling tool for undisturbed continuous operation for sinking bores in underground rock formations, specifying a selectable direction profile for the borehole by means of a tubu...  
WO/2017/137025A1
The invention relates to a reliably operating directional boring device for continuous operation with automatic finely controlled monitoring of the targeted boring at large depths with specification of a selectable directional course of ...  
WO/2017/134460A1
A reaming assembly (10) having an inner mandrel (12) including spiral lobes disposed on an outer surface thereof. The inner mandrel (12) is hollow and is sized large enough to freely pass a standard drill bit therethrough. The reaming as...  
WO/2017/135960A1
The present invention relates to a method and a system for optimized geosteering using real-time models that are updated LWD measurements containing data such as, for example, layer boundaries and formation properties, wherein the measur...  
WO/2017/131647A1
A rheological lock apparatus includes a fluid chamber formed within a housing between a pair of seals. The fluid chamber contains a rheological fluid. An inner surface of the housing has a first plurality of splines projecting into the f...  
WO/2017/129612A1
The present invention relates to an annular barrier (1) for being expanded in an annulus (2) between a well tubular structure (3) and a wall (4) of a borehole (5) downhole for isolating a first zone (101) from a second zone (102) in the ...  
WO/2017/131649A1
A rotationally selectable lock apparatus includes an outer element having a plurality of locking pins that are radially spring loaded to extend and retract through the outer element. An inner element is substantially encircled by the out...  
WO/2017/127659A1
A drill bit assembly includes a drill bit body, an insulating layer disposed on an end of the drill bit body and that defines a drill bit face and two electrodes formed such that they both extend from the drill bit face. The two electrod...  
WO/2017/087595A8
The disclosed embodiments provide a drilling rig having a tubular delivery arm that vertically translates the mast in a non-conflicting path with a retractable top drive. The retractable top drive translates a well center path and a rear...  
WO/2017/125307A1
A feed apparatus (3) for feeding cement to a cement silo (2) of a mining machine (1) comprises a receptacle (5) for receiving cement, a transfer tube (6) connected at a first end (6a) to the receptacle (5) for guiding the cement from the...  
WO/2017/127671A1
A method and related apparatus for forming a wellbore in a subterranean formation includes forming a drill string that has a drill bit at a distal end, a drilling motor configured to rotate the drill bit with a drive shaft; a joint coupl...  
WO/2017/127554A1
An electrical pulse cutting device is disclosed that in one non-limiting embodiment includes a pair of electrodes that generate electrical pulses inside an object to disintegrate a section of the object into cuttings, and at least one fl...  
WO/2017/127404A1
A downhole tool includes a valve assembly and a shock absorbing assembly. The valve assembly includes a valve spring operatively connected to a valve body. The shock absorbing assembly includes a spring operatively connected to a shock a...  
WO/2017/121976A1
According to the invention there is provided an apparatus for providing directional control of bore drilling equipment comprising a hydraulic pump (20) having an input shaft (21) for receiving an input torque from a drill pipe (1) and be...  
WO/2017/123249A1
A downhole tool velocity control apparatus includes a body having a portion with static circumferential diameter and a portion with a variable circumferential diameter. The portion with variable circumferential diameter has at least one ...  
WO/2017/123213A1
A downhole vibration minimization device includes a housing comprising a drilling fluid flow path, a sensor configured to sense a vibration frequency and amplitude of a tool vibration, and a force generator configured to open and close t...  
WO/2017/123736A2
A portable, shallow well-drilling apparatus (200) is described. The apparatus (200) is lightweight, modular, and easy to transport to and assemble at a remote drill site. The apparatus (200) includes a generally rectangular frame (210) h...  
WO/2017/120505A1
A downhole steering tool includes one or more steering blades selectively extendable from a housing. Each steering blade may be extended by fluid pressure within a steering cylinder. Each steering cylinder may be coupled to the interior ...  
WO/2017/119880A1
A dynamically controllable variable displacement axial piston pump is described. In an embodiment, the pump comprises a rotating cylinder with hydraulic pistons that contact the face of a swash plate. The angle of the swash plate can be ...  
WO/2017/115240A1
An apparatus for the production of holes in walls of a tunnel comprises a carriage (11) designed to travel along rails inside the tunnel, a mechanical drilling arm (13) mounted on the carriage and provided with a drilling head (14), a ca...  
WO/2017/116448A1
A downhole tool including multiple orifices defining at least a first and a second flow path, and a valve that adjusts to change a ratio of fluid flow between the first and second flow paths, the valve being offset from the multiple orif...  
WO/2017/109465A1
A jetting system for an undersea trencher (20) has jetting conduits (50) extending aftward of its trench-cutting jetting swords (30). Jetting conduit nozzles (51) direct liquid radially from their jetting conduits (50) into the trench (F...  
WO/2017/111703A1
The present invention relates to a semi-submersible offshore structure. More particularly, the invention relates to a low motion semi-submersible offshore structure that has improved stability in deep water. The low motion semi-submersib...  
WO/2017/108098A1
The seabed drill system comprises a drilling mast module (1) for placing drill rods (42), said drill rods (42) drilling the seabed, and it is characterized in that it also comprises: - a core barrel rack module (3) comprising a frame (33...  
WO/2017/106975A1
Some embodiments of the disclosure relate to an apparatus that may reduce friction of a tubular structure in horizontal or deviated well. An apparatus is provided for mounting on a tubular structure, such as a casing or drill string havi...  
WO/2017/105430A1
System and methods for optimizing coiled tubing string configurations for drilling a wellbore are provided. A length of a rotatable segment of a coiled tubing string having rotatable and non-rotatable segments is estimated based on the p...  
WO/2017/105437A1
A downhole tool orienting subassembly includes a latch assembly having one or more latch keys and an orienting key coupled to an outer housing of the latch assembly. A latch coupling has a body and an internal latch profile defined on an...  
WO/2017/105402A1
A deflection mechanism may include a first incline and a second incline for interacting with legs of a junction assembly to selectively deflect each of the legs in a desired direction in a multilateral wellbore system. The deflection mec...  
WO/2017/105849A1
A method for steering a downhole tool in a wellbore includes measuring a tool face when the drill bit is off-bottom, measuring an angular position of a drill string when the drill bit is off-bottom, and measuring a torque on the drill st...  
WO/2017/106479A1
A force stacking assembly for use with an earth boring system that includes a series of actuators (37) that each generate a force, and that are arranged to create a combined force that is cumulative of all of the actuators. The actuators...  
WO/2017/105390A1
An illustrative dogleg severity (DLS) estimation method includes: retrieving dimensions of steering assembly; determining an initial DLS estimate; using the DLS estimate in combination with the steering assembly dimensions to determine n...  
WO/2017/105401A1
A downhole assembly includes a tool-orienting device including an operating unit that obtains downhole measurements and a pulse-generating device that transmits the downhole measurements to orient a downhole tool. A restrictor sub is cou...  
WO/2017/100939A1
Downhole tool assembly comprises a whipstock engageable with a flow control device. The whipstock comprises a channel. A core is removably mounted in the channel. The flow control device comprises a valve with a shiftable sleeve for sele...  
WO/2017/020050A3
The invention provides a machine (10) for tunnelling in rock. The machine (10) includes a pilot drill assembly (12) for drilling a series of interfering parallel holes or a pilot hole into and generally perpendicular into a rock face (14...  
WO/2017/099780A1
A method includes conveying a washover whipstock coupled to an orienting latch anchor into a parent wellbore lined with casing and securing the orienting latch anchor to the casing. A washover tool couples to and removes the washover whi...  
WO/2017/097692A1
The invention relates to an apparatus and to a method for driving a cavity (103) in mining, wherein an extraction drum (139) rotatable about a drum axis of rotation (233) is rotatably mounted in relation to a longitudinal axis (218) by m...  
WO/2017/095676A1
A dual tower rig includes a hull supported by one or more legs and includes a cantilever assembly coupled to the hull. Dual towers are supported by a skidding system that is coupled to the cantilever assembly. The towers are configured t...  
WO/2017/095974A1
A method for drilling a well includes orienting a steerable drilling motor at a selected toolface angle. The steerable drilling motor is connected by a drill string to a surface drilling location. The drill string is automatically rotate...  
WO/2017/095959A1
A downhole closed loop method for controlling a curvature of a subterranean wellbore while drilling includes controlling a direction of drilling such that the drilling attitude is substantially equal to a setpoint attitude. A setpoint ra...  
WO/2017/089647A1
The invention relates to a method in down-the-hole drilling and a down-the-hole drilling device, being meant for drilling a hole with and a casing pipe (2). The drilling device comprises in its drilling head (I) : a drilling arrangement ...  
WO/2017/091084A1
A wellhead foundation for one or more subsea wells, the wellhead foundation comprising a suction foundation (1) provided with a housing (11) with an open bottom (114) and a top which is closable with a top cover (112), and one or more pi...  
WO/2017/091085A1
A wellhead foundation for one or more subsea wells, the wellhead foundation comprising a suction foundation (1) provided with a housing (11) with an open bottom (114) and a top which is closable with a top cover (112), and one or more pi...  
WO/2017/087490A1
A bearing section for a positive displacement mud motor for directional drilling in which the deflection of the drill bit is remotely adjusted by bending the drive sub using an offset flex drive mechanism to adjust between desired settin...  
WO/2017/087200A1
A lower stabilizing arm for stabilizing tubulars for stabbing to the threaded connections of a drill string on drilling rigs. The lower stabilizing arm comprises a bracket and an upper arm having an upper end and a lower end. An upper pa...  
WO/2017/087519A1
Automatic scanning and representing an environment with collision avoidance includes, for example, obtaining a first representation of the environment using a first scanning path, determining a second scanning path based on the first rep...  
WO/2017/086936A1
A multilateral tool and methods and systems related thereto, the multilateral tool conveyable into a parent wellbore and a lateral wellbore and having a plurality of components operatively coupled together such that movement of a compone...  
WO/2017/087595A1
The disclosed embodiments provide a drilling rig having a tubular delivery arm that vertically translates the mast in a non-conflicting path with a retractable top drive. The retractable top drive translates a well center path and a rear...  
WO/2017/083940A1
A drill motor assembly including a drill shaft and at least two sub-motor assemblies operatively engaged with the drill shaft to cause the drill shaft to rotate.  
WO/2017/083745A1
A wellbore or other type of hole in a geologic formation or other material, such as concrete or other manmade structures, may be formed by accelerating perforating charges containing detonable material through a tubular string. Movement ...  
WO/2009/028979A8
The invention relates to apparatus and methods useful for drilling lateral boreholes into a formation surrounding a main borehole. Proposed technique can be used for drilling of laterals which does not require such significant interrupti...  

Matches 701 - 750 out of 13,864