| Patents for E21B 4 - Drives for drilling, used in the borehole (6,032) |
|---|
| 06/06/2007 | EP1792052A2 Integrated magnetic ranging tool |
| 06/06/2007 | CN2908757Y Drive shafe device for screw drilling tool |
| 06/05/2007 | US7225889 Downhole motor locking assembly and method |
| 05/31/2007 | DE102005055032A1 Ram drill for drilling boreholes in the earth has pneumatic reversing gear comprising a rotary slide connected to a torsion-resistant air pipe for supplying air to and evacuating air from a control chamber |
| 05/30/2007 | EP1540219B1 Method and apparatus for replacement of underground pipe |
| 05/30/2007 | CN2906023Y Hydraulic lung-shape valve type jet impacter |
| 05/30/2007 | CN1318722C Hydraulic drill string accumulator |
| 05/29/2007 | US7222682 Chain drive system |
| 05/29/2007 | US7222669 Method of repair of collapsed or damaged tubulars downhole |
| 05/24/2007 | WO2007057055A1 Hammer drilling device with a pneumatic reversing gear |
| 05/22/2007 | US7219726 Method and apparatus to vibrate a downhole component |
| 05/22/2007 | US7219722 Apparatus and methods for powering downhole electrical devices |
| 05/22/2007 | CA2376823C Apparatus and method for directional drilling with coiled tubing |
| 05/18/2007 | WO2007056035A1 Backhead and drill assembly with backhead |
| 05/18/2007 | WO2007056007A2 Downhole percussion tool |
| 05/18/2007 | WO2007054353A2 Thread securer |
| 05/17/2007 | US20070107943 Tractor with improved valve system |
| 05/16/2007 | CN2900757Y Full hydraulic omnibearing down the hole drill |
| 05/16/2007 | CN2900756Y Radial bearing anti-rotation device under screw drill driving shaft |
| 05/15/2007 | US7216724 Coupling for dual member pipe |
| 05/10/2007 | US20070102196 Downhole percussion tool |
| 05/09/2007 | EP1463869B1 Driver |
| 05/09/2007 | CN1314878C Flexible compound orienting screw drill |
| 05/08/2007 | CA2395837C Percussive down-the-hole rock drilling hammer and piston therefor |
| 05/04/2007 | CA2720503A1 Turbodrill with asymmetric stator and rotor vanes |
| 05/03/2007 | WO2007050770A1 Extended reach drilling apparatus and method |
| 05/03/2007 | WO2007050161A2 Downhole tool |
| 05/03/2007 | CA2627284A1 Extended reach drilling apparatus and method |
| 05/02/2007 | EP1780372A1 Drilling system |
| 05/02/2007 | CN2895693Y Non-digging underground pipeline hole-wall expansion-fore propeller |
| 04/26/2007 | US20070089911 Downhole tool |
| 04/25/2007 | CN1954130A Method and device for drilling holes in the ground or in rock |
| 04/25/2007 | CN1312377C Apparatus and method for operating drill head from ground surface when drilling |
| 04/19/2007 | WO2007044844A2 Tagging and retrieval of dna from casualties |
| 04/19/2007 | WO2007044223A2 Curved line array with horizontal coverage control |
| 04/18/2007 | EP1436482B1 High power umbilicals for subterranean electric drilling machines and remotely operated vehicles |
| 04/18/2007 | CN2890313Y Internal-combustion jet-flow hole digger |
| 04/17/2007 | US7204326 Drilling turbine |
| 04/17/2007 | US7204324 Rotating systems associated with drill pipe |
| 04/12/2007 | WO2004083595A3 Substantially neutrally buoyant and positively buoyant electrically heated flowlines for production of subsea hydrocarbons |
| 04/11/2007 | EP1455635A4 Self-advancing device |
| 04/11/2007 | CA2563039A1 Borehole generator |
| 04/10/2007 | US7201239 Power-generating device for use in drilling operations |
| 04/10/2007 | US7201235 Driver drill |
| 04/04/2007 | EP1769131A1 Drill head for a ground-boring device |
| 04/03/2007 | US7199497 Frameless switched reluctance motor and application as a top drive for a rotary pump |
| 04/03/2007 | US7198120 Down-the-hole drill assembly |
| 04/03/2007 | CA2150735C Modulated bias unit for rotary drilling |
| 03/29/2007 | WO2007034462A1 A percussion hammer for enlarging drilled holes |
| 03/29/2007 | US20070068705 Apparatus and method to reduce fluid pressure in a wellbore |
| 03/29/2007 | CA2621022A1 A percussion hammer for enlarging drilled holes |
| 03/27/2007 | US7195083 Three dimensional steering system and method for steering bit to drill borehole |
| 03/27/2007 | US7195075 Method for construction of low thermal expansion and low resistance wire for logging applications |
| 03/20/2007 | US7191829 Gripper assembly for downhole tools |
| 03/20/2007 | CA2354994C Acoustic flow pulsing apparatus and method for drill string |
| 03/13/2007 | US7188685 Hybrid rotary steerable system |
| 03/13/2007 | US7188681 Tractor with improved valve system |
| 03/13/2007 | CA2314805C Slow rotating tool with gear reducer |
| 03/13/2007 | CA2282902C Venting and sealing system for down-hole drills |
| 03/08/2007 | WO2006134446A3 Novel activating mechanism for controlling the operation of a downhole tool |
| 03/08/2007 | CA2620509A1 Brushless motor commutation and control |
| 03/07/2007 | CN1926304A Downhole drilling of a lateral hole |
| 03/06/2007 | US7185716 Electrically sequenced tractor |
| 03/06/2007 | US7185714 Traction control for downhole tractor |
| 03/01/2007 | WO2007025117A1 Bearing elements, bearing apparatuses including same, and related methods |
| 03/01/2007 | US20070044954 Downhole motor locking assembly and method |
| 02/28/2007 | EP1756389A1 A reciprocable impact hammer |
| 02/27/2007 | US7182584 Motor protector |
| 02/27/2007 | US7182157 Enlarging well bores having tubing therein |
| 02/25/2007 | CA2556795A1 A drill bit |
| 02/15/2007 | WO2007017046A1 Drilling system |
| 02/15/2007 | CA2618236A1 Drilling system |
| 02/13/2007 | US7174974 Electrically sequenced tractor |
| 02/06/2007 | US7172039 Down-hole vane motor |
| 02/06/2007 | US7172038 Well system |
| 02/06/2007 | US7172026 Apparatus to allow a coiled tubing tractor to traverse a horizontal wellbore |
| 02/06/2007 | CA2296464C Drilling system with means for anchoring in the borehole |
| 02/01/2007 | US20070023204 Method and device for drilling holes in soil or rock material |
| 01/30/2007 | US7168510 Electrical transmission apparatus through rotating tubular members |
| 01/25/2007 | WO2007010513A1 A drill bit assembly for fluid-operated percussion drill tools |
| 01/25/2007 | US20070018848 Electrical connection assembly |
| 01/25/2007 | US20070017670 Gripper assembly for downhole tools |
| 01/25/2007 | CA2615618A1 A drill bit assembly for fluid-operated percussion drill tools |
| 01/23/2007 | US7165634 Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
| 01/23/2007 | US7165608 Wellbore power generating system for downhole operation |
| 01/23/2007 | CA2289129C Earth formation surveying device |
| 01/23/2007 | CA2255065C Downhole apparatus |
| 01/17/2007 | CN2858924Y Arrangement for regulating speed of down-hole drill |
| 01/11/2007 | US20070007045 Downhole hammer drill |
| 01/11/2007 | US20070007041 Active controlled bottomhole pressure system and method with continuous circulation system |
| 01/10/2007 | EP1740793A1 A telescopic conductor casing for a well installation and a method of driving same into the underground |
| 01/09/2007 | US7159676 Fluid distributor device for down-hole-drills |
| 01/09/2007 | US7159674 Method and device for directional down-hole drilling |
| 01/04/2007 | WO2007001187A1 Impact hammer for coiled tubing drilling |
| 01/04/2007 | US20070000697 Puller-thruster downhole tool |
| 01/04/2007 | US20070000695 Mud motor force absorption tools |
| 01/04/2007 | US20070000693 Tractor with improved valve system |
| 01/03/2007 | CN1888372A Whole-metal stator screw drilling tool |
| 01/02/2007 | US7156182 Method and apparatus for one trip tubular expansion |
| 01/02/2007 | US7156181 Puller-thruster downhole tool |