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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/2012/154057A1 |
A device for the pressure regulation of a well (1) which is provided with a return pump (14) for drilling fluid, and in which the operating level (10) of drilling fluid in an annulus (8) which is formed between an outer pipe (4) and an i...
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WO/2012/150864A1 |
A method for removing scale (2) from the upper portion of a well (4), wherein a tool (1) with a rotatable cleaning head (10) is coupled to a wireline (14) and is moved into the well (4), wherein the method comprises: - providing av rolle...
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WO/2012/138287A1 |
The invention concerns a hydraulic striking tool for application in rock and/or concrete cutting equipment containing a machine housing (100;200) with a cylinder (115;215) with a moveably mounted piston (145;245) which during operation p...
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WO/2012/138383A2 |
A valve for controlling the flow of a drilling fluid through a downhole tool positionable in a wellbore penetrating a subterranean formation. The downhole tool has a housing with a drilling motor therein and a drill bit at an end thereof...
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WO/2012/138288A1 |
The invention concerns a hydraulic, valveless impact mechanism for use in equipment for the machining of at least one of rock and concrete comprising a machine housing (105; 205) with a cylinder bore, a piston (110; 210) mounted such tha...
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WO/2012/125619A2 |
A downhole tool includes a body supported from a running string; and a releasing assembly for releasing from set liner hanger portions of the tool to be retrieved to the surface. The releasing assembly includes a connecting member for en...
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WO/2012/122211A1 |
A motor includes: a rotor including an undulated surface; a rod disposed about the rotor; and a coil disposed about the rod to induce shape changes in the rod, which in turn impart forces to the undulated surface to rotate the rotor.
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WO/2012/122141A1 |
A method and apparatus for delivering repetitive jarring impacts to a stuck object downhole. The jarring tool is deployed on coiled tubing or other tubular well conduit, and fluid pressure is used to cycle the jar without reciprocating t...
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WO/2012/122321A2 |
A moving or progressive cavity motor or pump is disclosed, the motor including a rotor and a stator, the stator having one or more inserts or gearing sections to limit a lateral movement of the rotor relative to the stator. In some embod...
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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/2012/116460A1 |
A pressurized fluid flow system for a normal circulation down-the-hole hammer comprises a cylinder coaxially disposed in between an outer casing and a piston that reciprocates due to changes in pressure of the pressurized fluid contained...
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WO/2012/112016A2 |
The present invention relates to a boring machine which comprises: a body; a leader that is supported by the body; a head unit that is moved along a lengthwise direction of the leader, and has a driving shaft coupled with a rod; a holdin...
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WO/2012/106999A1 |
An apparatus for drilling annulus ring hole, comprising: a down-the-hole (DTH) percussion hammer assembly, the DTH percussion hammer assembly comprising one or more DTH percussion hammers, an annulus ring structural housing having an out...
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WO/2012/109109A2 |
According to one embodiment, a multiple motor and/or pump array module for a drilling tool comprises a plurality of motors and/or pumps extending axially along generally parallel axes wherein the pumps are positioned along the axes next ...
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WO/2012/094460A2 |
In an oil-sealed bearing assembly in the bearing section of a mud motor, in which a mandrel is rotatably disposed within a cylindrical housing, a cylindrical sleeve is disposed coaxially and rotatably around the mandrel, with the sleeve ...
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WO/2012/092091A2 |
A remote actuation tool equipped with an intermediate volumetric mechanism for enhanced tool durability in high pressure differential downhole environments. Valve segments of the tool are actuated by power available due to a pressure dif...
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WO/2012/087752A2 |
A bottom hole assembly has a drill bit that is driven by a downhole turbine. The turbine speed is reduced by cycloidal gearing that requires no temperature sensitive seals when operating temperatures in some applications exceed 350 degre...
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WO/2012/068522A2 |
A moving cavity motor or pump, such as a mud motor, comprising: a rotor, a stator, and one or more apparatus for constraining (i.e., controlling or limiting) the movement of the rotor relative to the stator.
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WO/2012/065240A1 |
A hybrid power source includes an electric power source, a first hydraulic pump powered by the electric power source, a hydrocarbon burning power source, and a second hydraulic pump powered by the hydrocarbon burning power source. A hydr...
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WO/2012/055036A1 |
In a rotary pump having a rotor and a stator in communication with hydrocarbon production tubing, a submersible pump driver assembly includes a drive motor having an output connected by a drive link to the rotor of the pump. A production...
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WO/2012/055392A2 |
In a direct drill bit drive for tools for comminuting brittle materials and penetrating into brittle materials by percussive impact on the basis of a heat engine operated with a gaseous working medium, the heat engine is a hot gas engine...
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WO/2012/057432A1 |
The present invention relates to a ground drilling hammer and a sleeve thereof, and more specifically, to a ground drilling hammer and sleeve which comprises, a cylindrical casing, a back head in which external compressed air flows, a gu...
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WO/2012/047562A2 |
Welded downhole tools and methods are provided. The downhole tool is deployable into a wellbore penetrating a subterranean formation. The downhole tool includes a first downhole component having a first mating feature on at least one end...
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WO/2012/041084A1 |
A combined down-the-hole hammer comprises a coupler (1), a bracket (3), plurality of impactors (4), a gas distributor (2). The coupler is used to connect with a drill rod (5) and is internally provided with a first gas passage (10). Plur...
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WO/2012/039630A1 |
A hybrid drill bit having reliance on features rotatable together, yet movable relative to each other axially of the rotation axis, as a result of energy inputs, of (i) intermittently percussively striking the formation with first wear r...
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WO/2012/039666A1 |
A method for monitoring down-the-hole percussion drilling, wherein a down-the-hole hammer (8) is supplied with percussion and flushing fluid flow and the down-the-hole hammer is subjected to rotational force and to feed force. Percussion...
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WO/2012/021273A2 |
Various embodiments relate to a bearing assembly including a support ring configured to reduce thermal warping under operational temperature conditions, a bearing apparatus that may utilize such a thrust-bearing assembly, and application...
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WO/2012/007756A2 |
A percussion mole for inserting a ground-loop for a geothermal heat-pump apparatus. The ground-loop includes a first pipe and a second pipe. The mole comprises: a percussive drive mechanism;a first passage connectable to the first pipe, ...
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WO/2012/002939A1 |
A bearing assembly includes a first race (20) having a first set recesses (24) disposed on an upper surface (26) thereof. Wherein a first set of bearing elements (28) are disposed within the first set of recesses and the first set of bea...
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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/2011/136663A1 |
Downhole hammering or other vibrational apparatus comprising or including in, with respect to a hole axis, a rotatable input shaft (9) aligned with or aligned parallel to the hole axis, a rotatable shuttle assembly having two structures ...
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WO/2011/130123A2 |
An anchor system including a housing having a radial opening therein. A piston disposed within the housing and translatable therein. A slip in operable communication with the piston such that translation of the piston axially of the hous...
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WO/2011/128045A2 |
The invention relates to a ground-drilling device with a basic body and with a drilling head movably mounted in relation thereto in the longitudinally axial direction, wherein a clearance, which is variable in its size owing to the movab...
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WO/2011/129958A2 |
Embodiments provide apparatuses and methods for excavation and drilling, particularly reverse circulation hammers and bits. Reverse circulation hammers and bits manufactured in accordance with various embodiments may help to prevent fati...
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WO/2011/126881A2 |
A Moineau style stator includes a stator tube having a plurality of rigid helical lobes formed on an inner surface thereof. The helical lobes define a major internal tube diameter that is greater than a pass through diameter of the tube ...
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WO/2011/123765A2 |
A down-the-hole drill hammer assembly includes a casing, a drill stem, a drilling lug segment and a pilot drill bit is provided. The drill stem is housed within the casing and includes an abutment surface. The drilling lug segment is sli...
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WO/2011/119408A2 |
A retaining assembly for a cylindrical member and support sleeve in the bore of a component of a DTH. The cylindrical member and support sleeve may, for example, be a foot valve assembly for insertion into a counter bore in a bit. The cy...
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WO/2011/119155A1 |
A method of drilling a subterranean wellbore can include extending coiled tubing into the wellbore, and actuating an impact tool interconnected to the coiled tubing, thereby delivering impacts to a drill bit. A coiled tubing drilling sys...
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WO/2011/096842A1 |
The present invention pertains to the field of oil and gas well drilling and is intended to increase the load capacity and service life of cutting-type drill bits while providing for the maximum productivity thereof. The reduction gear f...
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WO/2011/090858A1 |
A system for regulating the flow of fluid through a progressing cavity motor includes an annulus restriction (22) for restricting flow through the annulus passageway, and an annular biasing member (24) for biasing the annular restriction...
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WO/2011/084040A2 |
The invention refers to sealing technique and may be used for the sealing of moving elements with diverse profiles of pressing surfaces. To solve the engineering problem - to create a new method of the sealing of moving elements and the ...
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WO/2011/082302A2 |
A chuck assembly, an assembly for an earth-boring drill assembly, and a method of manufacturing a chuck assembly. In the assembly, a first portion of the chuck bore may have a minimum inner diameter greater than the chuck spline maximum ...
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WO/2011/080292A1 |
The present invention relates to a downhole tool for guiding a device into a side track of a borehole, the tool having a tool axis and comprising a tool housing connected to an energy source. The invention further relates to a method for...
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WO/2011/081621A1 |
A method of steering a drill bit while drilling a wellbore can include periodically delivering an impact to the drill bit as the drill bit is rotated by a drill string. The impact may be delivered to the drill bit when an axis of the dri...
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WO/2011/068842A2 |
A tractor configured for grip locking during advancement to avoid slippage, particularly in open-hole wells. The tractor is equipped with a grip lock mechanism for independently locking an anchor grip in a radially outward direction. Thi...
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WO/2011/067360A1 |
The invention relates to a device for removing or replacing cables (8), or for laying cables or lines in parallel to an existing cable (8) in the ground, comprises a driving rocket (1), which is divided into two half shells (2, 3) in the...
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WO/2011/065891A1 |
The present invention concerns a filter (5) for a return line (L1, L2) for hydraulic oil to a hydraulic tank (2), which filter (5) comprises a filter element (11). According to the invention, the filter (5) is arranged to filter the hydr...
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WO/2011/062925A2 |
A down-the-hole drill hammer is provided that includes a housing, a solid core piston mounted within the housing, a seal located between the solid core piston and the housing, and a backhead configured to exhaust working fluid volumes ab...
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WO/2011/058307A2 |
A method of translating a member through a bore comprises moving fluid through a tubular member such as a drill string (2A), and generating impulses on the member by varying the passage of fluid through the member using a valve (60) whic...
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