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WO/2013/070479 |
In one aspect, an apparatus for forming a borehole is provided that in one embodiment may include a first milling device configured to rotate at a first rotational speed in a first direction, and a second milling device around the first ...
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WO/2013/037110 |
Disclosed in the present invention is a protecting method for a rotary drilling rig; the rotary drilling rig includes a drilling pipe (5) and a main pump (1) for driving the drilling pipe (5) into rotation, wherein the protecting method ...
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WO/2013/013993 |
Device (100) for producing a bore in the ground, with a spindle (7) which is led rotatably through a housing (2), and with a rotary seal arrangement (10) with which a rotary lead-through of the spindle (7) through the housing (2) can be ...
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WO/2013/007609 |
The present invention relates to a driving head (1) for telescopic drill rods (A) comprising a frame (2), a cylindrical collar (3) rotatably coupled with said frame (2), and provided at least with one internal surface comprising at least...
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WO/2013/000024 |
A fluid drilling head of the type adapted to cut a bore hole in rock by the rotation of a swivel assembly (5) within a body (1) typically has high pressure fluid nozzles providing cutting and reaming jets at the leading end (7) with the ...
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WO/2012/177275 |
Apparatus and methods for drilling a hole. A hybrid powered and manual auger is disclosed. The auger may include one or more cutting blades coupled to a drive shaft driven by a motor. The auger may further include a manual crank configur...
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WO/2012/175658 |
An element for a drill string comprises a body (600) with a generally axisymmetric appearance and a wave type communication device installed in said body (600). The communication device comprises a set of antennae (627) comprising a plur...
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WO/2012/140326 |
The invention relates to a rotation unit, rock drilling unit and method for rock drilling. The rotation unit comprises a main shaft (17) that is rotated around its longitudinal axis by means of a rotating motor (16). The main shaft is su...
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WO/2012/121946 |
Methods of forming a polycrystalline element comprise disposing a first plurality of particles comprising a superabrasive material, a second plurality of particles comprising the superabrasive material, and a catalyst material in a mold....
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WO/2012/121946 |
Methods of forming a polycrystalline element comprise disposing a first plurality of particles comprising a superabrasive material, a second plurality of particles comprising the superabrasive material, and a catalyst material in a mold....
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WO/2012/121945 |
Methods of forming a polycrystalline table comprise disposing a plurality of particles comprising a superabrasive material, a substrate comprising a hard material, and a catalyst material in a mold. The plurality of particles is partiall...
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WO/2012/121945 |
Methods of forming a polycrystalline table comprise disposing a plurality of particles comprising a superabrasive material, a substrate comprising a hard material, and a catalyst material in a mold. The plurality of particles is partiall...
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WO/2012/109699 |
A gear and clutch assembly (10) to be used in a mining drill rig, the assembly including a gear housing (12) and a clutch housing (13). Fixed to the housing (1 1) are mountings (14) via which assembly can be fixed to the remainder of the...
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WO/2012/109090 |
A down-the-hole assembly includes a housing having a central axis and a mechanical gear box positioned within the housing. The mechanical gear box is coupled to the housing such that rotation of the housing at a first rotational rate pro...
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WO/2012/109090 |
A down-the-hole assembly includes a housing having a central axis and a mechanical gear box positioned within the housing. The mechanical gear box is coupled to the housing such that rotation of the housing at a first rotational rate pro...
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WO/2012/102643 |
The group of inventions relates to the field of metal cutting, in particular to a method for cooling cutting instruments as well as to cutting instruments per se. The method is implemented during the cutting process by the switching on a...
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WO/2012/094746 |
A top drive assembly that includes a gauge for measuring strain in a linkage coupling the top drive to a drilling rig frame. The strain measuring gauge, which can be a strain gauge, is disposed on a pin that pivotingly links members of t...
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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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