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WO/2012/028006 |
A rotary drilling rig and a transmission device for a power head thereof are provided. The transmission device for the power head has a key sleeve body (1), the inner wall of which is provided with a plenty of key slots (11). Each key sl...
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WO/2012/018191 |
An auger of the present invention has four-stage speeds, and the auger comprises: an auger driving unit which has a frame capable of being attached to an excavator or a crane, and supplies rotary power for excavation; and a lower drillin...
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WO/2012/018191 |
An auger of the present invention has four-stage speeds, and the auger comprises: an auger driving unit which has a frame capable of being attached to an excavator or a crane, and supplies rotary power for excavation; and a lower drillin...
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WO/2012/012076 |
In one aspect of the present invention, a method of excavation with pointed cutting elements, comprising the steps of providing a excavating assembly with at least one pointed cutting element, the pointed cutting element comprising a rou...
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WO/2012/003393 |
A hand-held water drill system (10) including a drill (110) coupled to a shank (310) to transmit torque to a drill bit (130). A solution delivery device (120) substantially surrounding the shank (310) provides solution to the drill bit (...
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WO/2012/003393 |
A hand-held water drill system (10) including a drill (110) coupled to a shank (310) to transmit torque to a drill bit (130). A solution delivery device (120) substantially surrounding the shank (310) provides solution to the drill bit (...
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WO/2011/140648 |
A drilling rig having a top drive has a pipe gripper with a mandrel having an upper end for connection to and rotation with a drive string extending downward from the top drive. The pipe gripper has gripping elements that move radially i...
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WO/2011/139947 |
A method and apparatus for manipulating and deploying lengths of pipe when drilling wells is provided. The apparatus has a motor assembly with a rotor shaft coupled to a drive gear, and a torque assembly with a planetary gear set coupled...
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WO/2011/139947 |
A method and apparatus for manipulating and deploying lengths of pipe when drilling wells is provided. The apparatus has a motor assembly with a rotor shaft coupled to a drive gear, and a torque assembly with a planetary gear set coupled...
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WO/2011/109075 |
Systems and methods for wellbore operations using a dual top drive system with two top drives; the top drives positioned with one above the other; the two top drives in certain aspects movable separately or in unison; in one aspect the t...
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WO/2011/109075 |
Systems and methods for wellbore operations using a dual top drive system with two top drives; the top drives positioned with one above the other; the two top drives in certain aspects movable separately or in unison; in one aspect the t...
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WO/2011/093716 |
There is described a device for a drilling rig for forming of a bore hole (6) in a subterranean structure (63), wherein the drilling rig comprises a first, top driven drilling machine (1) arranged vertically displaceable along a guide tr...
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WO/2011/093715 |
Abstract There is described a rotary table device (1) provided with means (15, 16, 122) arranged for suspension of a pipe string (4), the rotary table (1) comprising a rotary ring (12) arranged rotatably about the central axis of the rot...
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WO/2011/057493 |
A hydraulic system for a rotary drilling rig includes a main hydraulic circuit, which includes a hydraulic pump (3), a hydraulic execution component (140) and a reversing valve (9) connected between the hydraulic pump (3) and the hydraul...
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WO/2011/035280 |
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/2011/035280 |
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/2011/023028 |
A high and low dual-speed pressurizing system for a rotary drilling rig includes a main hydraulic circuit (3) having larger output flow, an auxiliary hydraulic circuit (4) having less output flow and a pressurizing oil cylinder or pressu...
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WO/2010/137798 |
The present invention relates to method and apparatus for drilling a large diameter hole in the ground. The present invention comprises a hammer drill (40) installed at the bottom of a rod (104) assembled in multi-stages at support means...
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WO/2010/137798 |
The present invention relates to method and apparatus for drilling a large diameter hole in the ground. The present invention comprises a hammer drill (40) installed at the bottom of a rod (104) assembled in multi-stages at support means...
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WO/2010/133135 |
A rotary drilling rig for cast-in-situ tubular pile comprises a first drilling rod (1) and a drilling bucket (6) arranged at the bottom of the first drilling rod. The first drilling rod is tubular; the drilling bucket is annular and incl...
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WO/2010/129944 |
An autonomous drilling rig (200), including a carriage including a mast (204), a rotary head (202) configured to traverse up and down the mast (204), and a wireless transmission system. The wireless transmission system includes a wireles...
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WO/2010/129944 |
An autonomous drilling rig (200), including a carriage including a mast (204), a rotary head (202) configured to traverse up and down the mast (204), and a wireless transmission system. The wireless transmission system includes a wireles...
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WO/2010/123491 |
A stabilizer to suppress unwanted pivotal movement in pipe handling equipment suspended from bails. The stabilizer can contain either or both adjustable contacting members and non-adjustable contacting members which are rigidly connected...
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WO/2010/017367 |
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WO/2010/111613 |
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WO/2010/089573 |
A downhole tubular connector (100) comprising a first body portion (110) and a seal (120) provided on the first body portion, the seal (120) being adapted to selectively provide a seal with a downhole tubular, the downhole tubular connec...
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WO/2010/089572 |
A hydraulic connector (100) to provide a fluidic connection between a fluid supply (2) and a downhole tubular (4), the connector comprising: a body (115, 142); an engagement assembly comprising an extendable portion (120) selectively ext...
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WO/2010/048521 |
Transferring rotary power between a first rotating member and a second rotating member may performed by using a first element associated with the first rotating member; and a second element associated with the second rotating member. The...
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WO/2010/048521 |
Transferring rotary power between a first rotating member and a second rotating member may performed by using a first element associated with the first rotating member; and a second element associated with the second rotating member. The...
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WO/2010/044673 |
A power tong device (1) for handling of a threaded pipe connection wherein the power tong device (1) comprises a frame (6) having a power tong (10) and a holding tong (8) and also a drive gear (12) for the power tong (10), and wherein th...
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WO/2010/038932 |
The present invention relates to a circular earth-wire under-bracing construction method for supporting and securing a utility pole when carrying out mechanised pole-installation work using the excavating screw of an auger crane. More pa...
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WO/2010/036564 |
A modular base assembly for a rotary drill head includes a drive flange assembly having a tubular drive shaft configured to engage at least a lower drive interface, a gear housing supporting the drive flange assembly, and a plurality of ...
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WO/2010/037108 |
A method for controlling the electrical power delivered to a downhole system. The downhole system may include a power supply, a downhole tool, and a wire or cable connecting the downhole tool to the power supply. A resistive load, such a...
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WO/2010/037108 |
A method for controlling the electrical power delivered to a downhole system. The downhole system may include a power supply, a downhole tool, and a wire or cable connecting the downhole tool to the power supply. A resistive load, such a...
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WO/2010/036564 |
A modular base assembly for a rotary drill head includes a drive flange assembly having a tubular drive shaft configured to engage at least a lower drive interface, a gear housing supporting the drive flange assembly, and a plurality of ...
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WO/2010/027380 |
A cartridge feed screw nut includes a body having a tubular threaded opening defined therein and having side portions. The side portions include a plurality of lateral surfaces and a plurality of end surfaces. The lateral surfaces and th...
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WO/2010/017367 |
A method of boring through a formation includes providing a drilling machine and drill string and operatively coupling an earth bit to the drilling machine through the drill string. An air flow is provided through the drill string at an ...
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WO/2010/017371 |
A power tool includes a housing, a motor supported in the housing, a transmission operably coupled to the motor, an output shaft rotatable about a central axis, a clutch mechanism including a resilient member, and a clutch mechanism adju...
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WO/2010/009826 |
An earth auger device comprises a drill pipe system that has an outer pipe (1a) and an inner pipe (1b) which is arranged within the outer pipe (1a) in a rotatable manner thereto, and a rotary drive (2) for the drill pipe system. The eart...
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WO/2010/009826 |
An earth auger device comprises a drill pipe system that has an outer pipe (1a) and an inner pipe (1b) which is arranged within the outer pipe (1a) in a rotatable manner thereto, and a rotary drive (2) for the drill pipe system. The eart...
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WO/2009/149469 |
A self-adjusting spinner is provided that is capable of accommodating various pipe sizes without requiring the need for an operator to climb up the support mechanism and manually change the position of the drive assembly. The self-adjust...
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WO/2009/142666 |
Pneumatic drifters containing a drifter cylinder with removable feet and associated methods for using the pneumatic drifters are described. The removable feet are connected to feet pad of a drifter cylinder with multiple fasteners. The m...
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WO/2009/132831 |
The invention relates to a grip head for an earth boring unit, comprising a hollow shaft (3), wherein a sleeve (1) is arranged coaxially on the hollow shaft (3) to slide relative thereto, said sleeve having at least one end region (1b) w...
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WO/2009/135223 |
In one embodiment, a tubular gripping assembly for use with a top drive to handle a tubular includes a tubular gripping tool having a mandrel (110) and gripping elements operatively coupled to the mandrel; and a link assembly (113) attac...
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WO/2009/135220 |
A fill -up and circulation tool (100) includes a mandrel (105); a packer assembly (150) is disposed around the mandrel; and a valve assembly (200) connected to the mandrel, wherein the valve assembly is configured to selectively control ...
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WO/2009/128807 |
An upper stripper rubber canister apparatus has a canister body and a canister body lid. An upper end portion of the canister body includes a breech lock structure exposed within the canister body central passage. A lower end portion of ...
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WO/2009/123462 |
A measuring sensor unit (1) comprising a first end portion (111) arranged to be in releasable engagement with a drive shaft (151) of a top drive drilling machine (15) and also a second end portion (112) being arranged to be in releasable...
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WO/2009/098482 |
A hydraulic connector (10) to direct fluids between a lifting assembly (2) and a bore of a downhole tubular (4) includes an engagement assembly configured to selectively extend and retract a seal assembly (60) disposed at a distal end of...
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WO/2009/098474 |
A tool (10) to direct a fluids from a lifting assembly (12) and a bore of a downhole tubular includes an engagement assembly (20) configured to selectively extend and retract a seal assembly (60) disposed at a distal end of the tool into...
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WO/2009/098478 |
A method to connect a lifting assembly to a bore of a downhole tubular includes providing a communication tool (10) to a distal end of the lifting assembly, the communication tool comprising a body assembly (15), an engagement assembly (...
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