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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...
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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...
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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...
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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...
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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...
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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 ...
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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...
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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...
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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).
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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 (...
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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 ...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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WO/2011/149363A1 |
Vibrational apparatus to direct stress waves (eg. to a bit 2 or other downhole tool) by generating vibrations as a consequence of shuttling responsive to relative rotational movement between magnetic arrays (4,5) and wherein there is, or...
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WO/2011/149406A1 |
The invention relates to a rock drilling machine comprising a front part (1a), a removable cartridge (5) arranged in the front part (1a), a shank adapter (3) and a stop ring (4) for the shank adapter (3). According to the invention, the ...
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WO/2011/139208A1 |
The present invention relates to a drill comprising a shank adapter (3), a damping piston (5) with a forward end surface (18), a stop end surface (14) for the damping piston (5), a rotation chuck bushing (4) with a forward end surface (1...
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WO/2011/092377A1 |
A method for lubricating a drill shank (9) of a rock drilling machine (5), wherein at least part of the flow of the pressure fluid of a hydraulic circuit of a device (12, 13, 29, 36, 40) of the rock drilling machine (5) performing at lea...
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WO/2011/035280A2 |
A method for drilling a borehole in an earthen formation comprises (a) providing a drilling system including a drillstring having a longitudinal axis, a bottom-hole assembly coupled to a lower end of the drillstring, and a drill bit coup...
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WO/2011/000102A1 |
Disclosed is an apparatus for vibrating a downhole drill string operable to have a drilling fluid pumped therethrough. The apparatus comprises a tubular body securable to the drill string and having a central bore therethrough, a valve i...
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WO/2010/093080A1 |
The present invention relates to a ground excavator and an underground polygonal shoring method to form underground walls by excavating the ground, wherein a vibro-device and an auger device for excavating the ground are formed, and a po...
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WO/2010/058071A1 |
The invention relates to a rock drilling machine (5) equipped with an axial bearing (18) having at least one axial piston (39a, 39b) for setting the axial position of a drill shank (7) and for damping stress pulses returning from the roc...
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WO/2010/058072A1 |
The invention relates to a rock drilling machine and an axial bearing module. The rock drilling machine (5) is equipped with an axial bearing (18) having at least one axial piston (19, 20) for axially positioning a drill shank (7) and fo...
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WO/2010/058073A1 |
The invention relates to a rock drilling machine (5) equipped with an axial bearing (18) having at least one axial piston (19, 20) for setting the axial position of a drill shank (7) and for damping stress pulses returning from the rock....
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WO/2010/015412A2 |
The invention relates to a method for making a borehole in the soil, a drill head for directional drilling being advanced statically in the soil. For linear drilling, said drill head is additionally rotationally driven and for changing t...
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WO/2009/139705A1 |
A bottom-hole assembly (202), BHA, for drilling a borehole (204, 301) in an earth formation (208, 30O), comprising a percussion drill bit (208), a percussion mechanism adapted to strike the drill bit (208), at least one sensor (226, 228,...
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WO/2009/118497A2 |
The invention relates to a hammer drill that comprises a shank (9) connected to at least one drill rod (12) including a tool (13) to be brought into contact with a rock to be drilled (14), a guiding device (16) for the shank (9), and a f...
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WO/2009/111887A1 |
A drilling accelerator that is driven from a rotational drive to generate a percussive axial motion on a drill bit. The drilling accelerator includes a drive connection to mechanically convert rotational drive to axially directed percuss...
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WO/2009/111434A2 |
The disclosure provides a fracturing isolation sleeve for a wellhead assembly including a fracturing adapter and tubing head. In at least one embodiment, the sleeve can telescopic to different lengths to fit different assemblies without ...
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WO/2009/057184A1 |
Each of weight hammers (7, 8) has a shape suitable for applying a hammering force to the hammered surface of a body (11) to be hammered in substantial uniformly around the center axis of the body. Rotating bodies (9, 10) for driving the ...
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WO/2009/028964A1 |
Drilling apparatus having a drillstring and operable to rotate the drillstring and operable to provide vibration axially to the drill head. Relies upon vibrational apparatus positioned to provide the vibration reliant upon interactive ma...
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WO/2009/023930A1 |
A down-hole hammer comprising a drill bit (10) and a drive sub (11) with an interconnection therebetween for causing rotation of the drill bit upon rotation of the drill sub. The drill bit (10) comprises a drill bit head (13) and a shank...
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WO/2009/014444A1 |
The invention relates to a drill device comprising a vibratory drive connected to a drill string for providing a vibration to the drill string, a rotary drive connected to the drill string for providing a rotation to the drill string, ch...
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WO/2009/002306A1 |
A method and a device for controlling a drill rig (1) which includes a carrier vehicle with at least one feed-beam (3), wherein a drill machine (2) is movable to-and-fro, wherein rig parameters are set by a control unit (6) and wherein e...
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WO/2008/132276A1 |
The invention relates to a coupling arrangement for coupling a drill shank (3) of a rock drill unrotatably but axially movably. The coupling arrangement comprises power transmission members (8; 8a, 8b) between the surfaces of the drill s...
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WO/2008/121004A1 |
A drive assembly suitable for a spindle connection to a drill string or other shaft, the assembly comprising or including a drive shaft, a shuttle rotatable under the action of the drive shaft but being slidable relative thereto, the shu...
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WO/2008/089001A1 |
A method of drilling a subterranean hole that includes mixing a base fluid and a micronized weighting agent having a particle size d90 of less than about 50 microns to form a wellbore fluid; providing a drilling assembly that includes a ...
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WO/2007/147979A1 |
The invention relates to a hydraulic rotary percussive device of the drill type, intended for drilling boreholes, comprising: a striking mechanism equipped with a piston (5) which is able to move translationally along a striking axis and...
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WO/2007/144953A1 |
A device and a method for digging long cave and pit in which a rod having a digging bit can be completely prevented from being damaged due to the collapse of a rock core and the normal operations of the rod and the digging bit can be sec...
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WO/2007/134478A1 |
A mud shaft for fitting into an outer drill string (5) of a rotary percussive drilling rig (1) having an overburden percussion mechanism is described. In this case, the rotary percussive drilling rig (1) has a central chisel bit (3), whi...
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WO/2007/064232A1 |
A well drilling apparatus (10) (top drive) designed to be suspended from a travelling block (6) in a drawworks and laterally supported by a dolly (9) running together with the well drilling apparatus along tracks or rails fixed to a derr...
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WO/2007/064231A1 |
A well drilling apparatus (10') (top drive) designed to be suspended from a travelling block (6') in a drawworks and laterally supported by a dolly (9') running together with the well drilling apparatus along tracks or rails fixed to a d...
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WO/2007/042618A1 |
The invention relates to a method and a rock-drilling rig for drilling a hole in a rock. In the method the hole is drilled with a so-called top-hammer rock-drilling rig including a drill rod and a cone roller bit at the end of the drill ...
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WO/2006/061459A1 |
The invention relates to a method for casing drilling, a drilling unit and an adapter device. The adapter device (20) to be used in extension drill equipment drilling comprises an inner piece (21) which can be rotated by the rotation dev...
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WO/2006/043878A1 |
The invention relates to a drill bushing for engagement with a drilling steel, wherein said drill bushing (2) has contact surfaces (4) for contact with a drilling steel (1) , said contact surfaces (4) having interior, inwards curved shap...
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WO/2006/003259A1 |
The invention relates to a method and software product for controlling a percussion device belonging to a rock-drilling machine, and to a percussion device. The impact frequency of the percussion device (7) is set so that the percussion ...
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