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Matches 1 - 50 out of 776

Document Document Title
WO/2018/187765A1
A pressure pulse tool includes a tool housing, a valve disposed in the housing and having first and second valve components that are each rotatable relative to the housing and that cooperate to open and close a fluid flow path through th...  
WO/2018/165348A1
A hybrid bit includes an earth-boring element and a percussion element. The earth-boring element and the percussion element are coaxially arranged, with the earth-boring element surrounding the percussion element. A reciprocating member ...  
WO/2018/114230A1
The invention relates to a rotary drilling tool and to a method for creating a borehole in the ground, comprising a main body, a removal apparatus, which has at least one hammer unit, which comprises an axially reversingly driven hammer ...  
WO/2018/099262A1
Provided is a rock drilling, swelling and chiselling combined machine based on a high-pressure foam medium, which comprises: a mechanical device of the rock drilling, swelling and chiselling combined machine, a high-pressure foam generat...  
WO/2018/047962A1
Provided is a drilling tool, wherein a bit head (3) that can rotate about a bit center line (L) separated from an axis (O) on the outer circumference side is mounted to the distal end of a shank device (1) that is rotated about the axis ...  
WO/2018/049199A1
A drill string comprises a mechanical drill bit and a ram accelerator with a launch tube proximate to the mechanical drill bit. A projectile accelerated by the ram accelerator exits the mechanical drill bit through an orifice and impacts...  
WO/2017/204664A1
The invention can be used in underground mining, being mounted on a device commonly known as a rock drilling jumbo. The system of the invention is used for systems for drilling long radial holes. In ore extraction in underground mining, ...  
WO/2017/204947A1
A downhole pulsing apparatus having a tubular housing, a first valve assembly positioned in the housing, first and second turbine stages each comprising a stator and a rotor positioned in the housing below the first valve assembly and a ...  
WO/2017/197442A1
A fluid pulse apparatus for down hole drilling having a turbine assembly actuated by a flow of drilling fluid. The apparatus has a narrowed fluid flow section that cooperates with a piston that moves between an open a fluid flow restrict...  
WO/2017/177352A1
An impact-type ice driller, comprising a rack (1), a motor (2), a drill stem (7), and a fixed part and a rotary part oppositely arranged in the axial direction. The fixed part is fixed relative to the rack (1); the rotary part is connect...  
WO/2017/164713A1
A water hammer device of the present invention comprises: a hammer body having a bit unit, which performs a drilling operation and is provided at an end portion thereof; a piston slidably provided in the hammer body, and having a working...  
WO/2017/131969A1
A boring apparatus includes an upper member and a bit body configured to rotate relative to a pilot bit. A first end of the upper member is connected to a workstring. An inner cavity of the upper member includes a first radial cam surfac...  
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/2017/056026A1
A percussion device that includes: - an input side; - an output side; - at least one drive transmitter; - a drive transmitter pathway; - a percussion impactor; and - a percussion anvil; where: the drive transmitter pathway is a circumfer...  
WO/2017/007469A1
A modular, mechanical percussive hammer assembly may be used with drill strings, wireline cable, and coiled tubing. Rotation of a splined driveshaft by downhole electric, hydraulic or mud motor rotates a downwardly-biased hammer and dril...  
WO/2016/192910A1
A rock drilling shank adaptor having at least one flush hole extending radially through the body of the adaptor in communication with an axially extending internal bore. The flush hole in a direction from an external side to an internal ...  
WO/2016/192107A1
A method for varying a weight on a drill bit in a wellbore. The method includes running a downhole tool into the wellbore on a drill string. The downhole tool includes a motor and a drill bit. The drill bit is rotated with the motor to d...  
WO/2016/180787A1
A measurement while drilling (MWD) tool includes a sensor, an encoder operably connected to the sensor and a pulser operably connected to the encoder. The pulser includes a linearly acting bidirectional piston that operates a poppet valv...  
WO/2016/178614A1
The invention concerns a damping device for a fluid-driven down-the-hole drill for the damping of the recoil from a drill bit (5A) connected to the machine, comprising a machine housing (2), an impact mechanism (3) driven by pressurised-...  
WO/2016/149795A1
A downhole motor has a bearing mandrel rotatably disposed within a housing, plus an impact adapter disposed above and connected to the bearing mandrel and rotatable therewith. The impact adapter has upwardly-projecting teeth engageable w...  
WO/2016/148575A1
A percussive hammering assembly comprises a tool assembly (24, 25). The tool assembly (24, 25) is arranged to be oscillated in a direction (P) within a casing. An impact piston (27) is arranged slideably in a housing (28), together with ...  
WO/2016/126258A1
Various embodiments include methods and apparatus structured to increase efficiencies of a drilling operation. A drilling apparatus can be structured to include a hammer drill to move a hammer to impart impact force to a bit box in conju...  
WO/2016/109868A1
A multi-fluid drilling system (10) drilling is disclosed for drilling a hole or well (11). The system (10) is coupled to a dual wall drill string (12). The drill string (12) is configured to enable separate flow of a first fluid (14) and...  
WO/2016/060852A2
An apparatus including a rotating segment having a first radial surface, a non-rotating segment having a second radial surface, a housing disposed around the first and second radial surfaces, and one or more rolling elements disposed bet...  
WO/2016/042234A1
The invention concerns a hydraulic drilling apparatus (2) comprising: a housing (3) comprising a front portion (4); a shank (6) comprising a fluid injection conduit (12) and intended to be coupled to at least one drill rod provided with ...  
WO/2016/003351A1
The present invention concerns a down-the-hole drill that is driven via a drill string by a flow of fluid. It comprises a housing with an impact mechanism, a drill bit that is mounted such that it can be axially displaced in a driver chu...  
WO/2016/003350A1
The present invention concerns a down-the-hole drill that is driven via a drill string by a flow of fluid, comprising a housing with an impact hammer, the impact hammer being arranged with a drill bit mounted in a driver chuck, a hammer ...  
WO/2015/167796A1
Repeated percussive forces may be provided using various devices, systems, assemblies, and methods. Example rotary percussive devices may be used in a downhole environment, including within a drilling system that includes a percussive ha...  
WO/2015/089937A1
A well-drilling thruster. Same comprises, arranged at the rear extremity part, an electro-hydraulic composite pipe (11), an actuator used for driving the well-drilling thruster forward, and, sequentially fitted and connected, a drive mot...  
WO/2015/039629A1
Disclosed are a propulsive force one-way delayed response method for a rock drilling apparatus and a rock drilling apparatus implementing the propulsive force delayed response method. The drilling apparatus comprises a propulsion guidanc...  
WO/2014/209197A1
A device in respect of a hydraulic rock drilling machine (1) with a machine housing (2,3,11), which encloses a hydraulic percussion device, a rotation mechanism (4) for rotation driving a shank adapter (1) and a guiding device (6) for th...  
WO/2014/166606A3
The invention relates to a hydraulic drill hammer (1) for the arrangement on a carrier device (2), comprising a hydraulic slewing gear (3), a hydraulic striking mechanism (4) and a hydraulic circle (5) having a fluid inlet (6) and at flu...  
WO/2014/092387A1
The present invention relates to an impact buffering device for a hydraulic rotating impact apparatus. The impact buffering device installed in the impact apparatus includes: a lower diameter part and an upper diameter part; a collar par...  
WO/2014/065797A1
A well tool drilling tool can include a torque transfer mechanism with an inner mandrel, an outer housing, and at least one pawl which displaces radially and thereby selectively permits and prevents relative rotation between the inner ma...  
WO/2013/109182A1
A device for flushing liquid sealing (5, 6) in a rock drilling machine including a ring-shaped elastic sealing device including on the one hand means for making contact in a seat arranged in a flushing housing, on the other hand means fo...  
WO/2013/095164A1
Apparatus, methods and uses that allow extended reach drilling by virtue of the provision in the drillstring and to downhole tools collective vibrations, not tuned specifically to a single resonant frequency, from a hammer assembly that ...  
WO/2013/085822A2
Present embodiments are directed to a resonant extractor system (28) configured to use rotational energy provided by a top drive system (24) to apply vertical oscillating motion to attached tubular or drilling equipment. The extractor (2...  
WO/2013/072878A1
The invention discloses an impact drill assembly comprising a drill casing (7) having a chuck (2) at the one end slideably engaging a stem of a piston (1 ) arranged to strike a drill steel (5). The piston stem (15) is guided in a rotatab...  
WO/2012/161596A1
The use in a drillstring of a PDM (2) with both an output (5) upwardly and an output downwardly (5) to devices (3,4) spaced at least by the PDM (2).  
WO/2012/155305A1
A rotary impact type rock drilling machine and a double-layer drilling rod mechanism comprise an excitation mechanism (1), a rotating mechanism (3) and a flushing mechanism (10). The rotating mechanism (3) consists of a rotary box body (...  
WO/2012/154296A1
A jarring device includes an outer housing which defines an axial flow path therethrough. An impact rotator is retained within the housing and is rotatable therewithin between a first rotational position and a second rotational position ...  
WO/2012/138383A3
A valve (11) for controlling the flow of a drilling fluid through a down- hole tool (10) positionable in a wellbore penetrating a subterranean formation. The downhole tool has a housing with a drilling motor therein and a drill bit (1) a...  
WO/2012/120403A1
An excitation apparatus suitable for use downhole having interengaged masses at least in part confined or guided so as to be movable as an interengaged assembly on an axis, one mass ("rotatable mass") being rotatable relative to the othe...  
WO/2012/089949A1
The invention relates to a rotary percussion apparatus (2), comprising: a casing (3) forming a mounting; a striking mechanism which comprises a longitudinal body (8), which is rotatably mounted in the housing (3) along the axis (A) of th...  
WO/2012/068771A1
An impact-type hydraulic rock drilling machine includes an impact mechanism, a rotating mechanism and a flushing mechanism. The impact mechanism is composed of hydraulic motors (3,6), a shock excitation box (1), eccentric shafts (4,8), g...  
WO/2012/049353A1
Drill assembly for making a hole into a soil or rock which arrangement comprises a pilot bit (10) drilling the middle part of the hole and a ring bit (1) drilling the outer circle of the hole in which case in the drilling situation the r...  
WO/2012/044127A3
A punching device having a head part includes a punching device body, a lead supported by the punching device body, a driving shaft slidably installed on the lead and to which a unit rod for punching is connected, and a head part includi...  
WO/2012/044127A2
A punching device having a head part includes a punching device body, a lead supported by the punching device body, a driving shaft slidably installed on the lead and to which a unit rod for punching is connected, and a head part includi...  
WO/2012/030272A1
A hydraulic impact mechanism, of the valveless impact mechanism type, comprising a pre-charged gas accumulator connected to a working chamber in order to make possible impact mechanisms for equipment for rock drilling and hydraulic break...  
WO/2012/002827A1
A vibrational apparatus for a downhole assembly comprising first and second assemblies, each of the said assemblies having magnetic arrays around a common axis, wherein a fluid feed or other suitable drive causses a relative rotation bet...  

Matches 1 - 50 out of 776