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WO/2012/055036 |
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/2012/055392 |
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/2012/057432 |
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/2012/047562 |
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/2012/041084 |
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/2012/039666 |
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/2012/039630 |
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/2012/021273 |
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/2012/007756 |
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/2012/002939 |
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/2011/149363 |
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/2011/149363 |
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/2011/136663 |
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/2011/129958 |
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/2011/130123 |
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/2011/130123 |
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/2011/128045 |
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/2011/129958 |
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/2011/126881 |
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/2011/126881 |
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/2011/123765 |
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/2011/123765 |
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/2011/119408 |
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/2011/119155 |
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/2011/096842 |
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/2011/090858 |
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/2011/084233 |
An apparatus for reaming a wellbore without rotating a tubular string that is extendable to a surface. A mandrel (102) is coupled to a downhole end of the tubular string. The mandrel (102) has at least one groove (110) in a sidewall port...
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WO/2011/084040 |
The invention refers to sealing method and may be used for the sealing of moving elements (1) with diverse profiles of pressing surfaces. The sealing is performed by fixing between the moving elements (1) a springy sealing contact having...
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WO/2011/084040 |
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/2011/082302 |
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/2011/080292 |
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/2011/081621 |
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/2011/067360 |
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/2011/068842 |
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/2011/068842 |
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/2011/065891 |
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/2011/062925 |
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/2011/062925 |
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/2011/062925 |
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/2011/058295 |
The present invention recites a downhole motor and method of fabricating the same, wherein the method for fabricating a stator for a downhole motor includes the providing of a mandrel having an outer geometry that is complimentary to a d...
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WO/2011/058307 |
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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WO/2011/058296 |
The present invention recites a downhole motor and method of manufacture wherein a mandrel having an outer geometry that is complimentary to a desired inner geometry for the stator is provided. A flexible sleeve is provided over the mand...
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WO/2011/058294 |
The present invention recites a method of fabricating a stator for a downhole motor, the method comprising the steps of providing a stator tube having an interior surface and applying a bonding agent to the interior surface of the stator...
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WO/2011/059362 |
The invention relates to technical means for drilling oil and gas wells, and particularly to the realization of the main unit in the structures of multistage turbodrills, i.e. the axial turbine. The invention makes it possible to achieve...
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WO/2011/056518 |
A method of operating an oil well comprises applying through a regenerative variable frequency drive AC electrical energy from a power grid to an AC electric motor to operate a drive mechanism of an oil well pump. The motor speed is regu...
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WO/2011/051397 |
The invention relates to a device (100) for moving in a tubular channel (199) comprising two gripping means (101) fluidly connected via a pump (400); wherein a first (G1) of the two gripping means comprises a fluid; wherein the pump is a...
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WO/2011/051321 |
An apparatus (100) for operation in a tubular channel (199), the apparatus comprising a first part and a second part connected to the first part, wherein the second part comprises a first electronic device adapted to generate a data sign...
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WO/2011/046444 |
A rock drilling machine (1) comprising a drill portion (4) with a drill bit (8) and an associated gear (14) and driving motor (16), a string portion (6) and also pipes and lines (42) for supply of drilling fluid and power, wherein the st...
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WO/2011/030095 |
Aspects of the invention provide valves, bottom hole assemblies, and methods of selectively actuating a motor. One aspect of the invention provides a valve including: a barrel having an interior having a circular cross-section, an inlet ...
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WO/2011/030095 |
Aspects of the invention provide valves, bottom hole assemblies, and methods of selectively actuating a motor. One aspect of the invention provides a valve (200) including: a barrel (202) having an interior having a circular cross - sect...
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