| Patents for E21B 4 - Drives for drilling, used in the borehole (6,032) |
|---|
| 11/08/2007 | WO2007124567A1 Downhole motor with a continuous conductive path |
| 11/07/2007 | EP1702133B1 Method for drilling and lining a wellbore |
| 11/06/2007 | US7290626 Transmission sleeve |
| 11/06/2007 | US7290625 Reverse-circulation drilling method and system |
| 11/06/2007 | US7290624 Method and device for drilling holes in soil or rock material |
| 11/01/2007 | WO2007121510A1 Improved drilling apparatus and drive unit |
| 11/01/2007 | WO2007091218A3 Self-anchoring device with force amplification |
| 11/01/2007 | US20070251731 Hydraulic Impact Mechanism |
| 11/01/2007 | US20070251729 Downhole motor with a continuous conductive path |
| 10/31/2007 | EP1740793B1 A telescopic conductor casing for a well installation and a method of driving same into the underground |
| 10/31/2007 | CN101063401A Internal combustion fluid jet boring device |
| 10/30/2007 | US7289943 Lumping and delumping method for describing hydrocarbon-containing fluids |
| 10/30/2007 | US7287609 Drilling a borehole |
| 10/30/2007 | US7287607 Directional drilling apparatus |
| 10/17/2007 | EP1845230A1 Constant force actuator |
| 10/17/2007 | CN100343470C Device for advancing drillings in the ground |
| 10/16/2007 | US7281575 Field adjustable impact jar |
| 10/11/2007 | WO2007115124A2 Apparatus and method for transmitting outgoing data using data descriptors |
| 10/11/2007 | CA2797565A1 Jet motor and method for providing rotation in a downhole tool |
| 10/11/2007 | CA2646326A1 Jet motor and method for providing rotation in a downhole tool |
| 10/10/2007 | EP1611310B1 A hydraulic drill string device, in particular a hydraulic in-hole rock drilling machine |
| 10/10/2007 | EP1485570B1 Thrust control apparatus |
| 10/04/2007 | WO2007081253A8 Do wn-the-hole hammer and components for a do wn-the-hole hammer, and a method of assembling a do wn-the-hole hammer |
| 10/04/2007 | US20070227779 Jet motor |
| 10/03/2007 | EP1840322A1 Rotary percussion drilling device and method |
| 10/03/2007 | CN200955353Y Hydraulic oil-circuit returning device for dril implement |
| 10/02/2007 | US7275593 Gripper assembly for downhole tools |
| 09/30/2007 | CA2541063A1 Rotopercussion drilling device |
| 09/27/2007 | US20070221412 Rotary Valve for a Jack Hammer |
| 09/27/2007 | US20070221408 Drilling at a Resonant Frequency |
| 09/26/2007 | EP1837481A1 Drilling tool and drilling method |
| 09/25/2007 | US7273113 Reversible penetrating machine with a differential air distributing mechanism |
| 09/25/2007 | US7273109 Puller-thruster downhole tool |
| 09/25/2007 | US7273108 Apparatus to allow a coiled tubing tractor to traverse a horizontal wellbore |
| 09/25/2007 | CA2492354C Flow control valve |
| 09/25/2007 | CA2394950C Three dimensional steerable system |
| 09/20/2007 | WO2006012731A3 Integrated magnetic ranging tool |
| 09/20/2007 | US20070215342 Apparatus and method for powering downhole electrical devices |
| 09/19/2007 | CN200949421Y Uniform wall thickness stator screw drill |
| 09/18/2007 | CA2335158C Percussive down-the-hole rock drilling hammer, and a piston used therein |
| 09/13/2007 | WO2007103686A1 Extended reach anchor |
| 09/13/2007 | CA2581438A1 Expandable ramp gripper |
| 09/12/2007 | CN200947580Y Electricity-driven unit of rotary guide drilling based on power factor correction |
| 09/06/2007 | US20070204993 Method for drilling and casing a wellbore with a pump down cement float |
| 09/06/2007 | DE102006010227A1 Rammbohrgerät mit pneumatischer Umsteuerung Ram boring machine with pneumatic reversing |
| 09/05/2007 | EP1828534A1 A ground drilling hammer and the driving method |
| 09/05/2007 | CN200943442Y Helicoid drill for saturated salt-water-resistant drilling well |
| 09/05/2007 | CN200943441Y Down-hole drill |
| 09/05/2007 | CN100335741C Assembly and method for drilling low pressure formation |
| 09/05/2007 | CN100335737C A hydraulic in-hole rock drilling machine |
| 09/05/2007 | CN100335735C 击打力发生器 Hitting force generator |
| 09/04/2007 | CA2409062C Milling of casing using coiled tubing |
| 08/29/2007 | CN200940443Y Drilling system for down-the-hole follow-up tube |
| 08/29/2007 | CN101027456A Bottom drill combination |
| 08/28/2007 | CA2265289C Bellows motor protector and motor and pumping system incorporating the same |
| 08/22/2007 | EP1641997B1 Percussive drill with adjustable flow control |
| 08/22/2007 | CN1333150C Metal molten drilling method and drilling apparatus |
| 08/21/2007 | US7258169 Methods of heating energy storage devices that power downhole tools |
| 08/21/2007 | CA2318853C Downhole motor assembly |
| 08/21/2007 | CA2312341C Percussive tool |
| 08/21/2007 | CA2299606C Bearing assembly for wellbore drilling |
| 08/16/2007 | WO2007091218A2 Self-anchoring device with force amplification |
| 08/15/2007 | EP1669539A4 Angle and reactive torque control device for a gerotor type motor provided with a spindle and drilling bit in a bended drill string |
| 08/15/2007 | EP1463868B1 Down-the-hole drill hammer. |
| 08/14/2007 | US7255516 Method and apparatus for replacement of underground pipe |
| 08/14/2007 | CA2150733C A rotatable pressure seal |
| 08/09/2007 | US20070181344 Drilling head with protective screen |
| 08/09/2007 | US20070181340 Drilling apparatus with percussive action cutter |
| 08/08/2007 | CN2931754Y Down-hole decelerator unit |
| 08/07/2007 | US7252150 Downhole tool |
| 08/07/2007 | CA2456797C Deformable blades for downhole applications in a wellbore |
| 07/31/2007 | CA2347073C Down hole motors and methods for their operation |
| 07/26/2007 | WO2007050161A3 Downhole tool |
| 07/25/2007 | EP1809852A1 Hydraulic impact mechanism |
| 07/25/2007 | CN2926474Y Screw driller transmission axis assembly with double-prevention structure |
| 07/19/2007 | WO2007081253A1 Do wn-the-hole hammer and components for a do wn-the-hole hammer, and a method of assembling a do wn-the-hole hammer |
| 07/19/2007 | CA2631544A1 Down-the-hole hammer and components for a down-the-hole hammer, and a method of assembling a down-the-hole hammer |
| 07/18/2007 | CN2923971Y Anti-flush-corrosion device for drive axle of screw-bar drilling tool |
| 07/17/2007 | US7243743 Drilling assembly and method for drilling a barehole into geological formations |
| 07/17/2007 | US7243740 Filter assembly having a bypass passageway and method |
| 07/17/2007 | US7243739 Coiled tubing directional drilling apparatus |
| 07/17/2007 | CA2417565C Stator for down hole drilling motor |
| 07/12/2007 | WO2007077547A1 A drill bit assembly for fluid-operated percussion drill tools |
| 07/10/2007 | CA2362209C Drilling method |
| 07/05/2007 | WO2007026308A3 Brushless motor commutation and control |
| 07/05/2007 | US20070151764 Tractor with improved valve system |
| 07/03/2007 | US7237625 Device for simulataneously casing a hole while drilling |
| 07/03/2007 | CA2380520C Rotational impact drill assembly |
| 06/28/2007 | US20070144784 Method for drilling and lining a wellbore |
| 06/28/2007 | US20070144783 Rotating Systems Associated with Drill Pipe |
| 06/26/2007 | US7234548 Hydraulic rotary-percussive hammer drill |
| 06/26/2007 | US7234545 Self-blocking safety device |
| 06/26/2007 | US7234543 Systems and methods for directionally drilling a borehole using a continuously variable transmission |
| 06/21/2007 | WO2007068103A1 A vibratory apparatus for a rotary-vibratory drill |
| 06/13/2007 | CN1981145A Chain drive system |
| 06/12/2007 | US7228911 Apparatus for and method of radial expansion of a tubular member |
| 06/12/2007 | CA2338809C Drilling turbine |
| 06/07/2007 | WO2007064591A2 Wellbore motor having magnetic gear drive |
| 06/07/2007 | WO2007062490A1 Fluid flow control means for a reverse circulation down hole hammer |
| 06/07/2007 | US20070125578 Wellbore motor having magnetic gear drive |