| Patents for E21B 4 - Drives for drilling, used in the borehole (6,032) |
|---|
| 07/10/2012 | CA2540437C Downhole motor seal and method |
| 07/05/2012 | WO2012092091A2 Remote actuation testing tool for high pressure differential downhole environments |
| 07/05/2012 | CA2728630A1 Steerable deep drilling robot suitable for drilling geothermal boreholes |
| 07/04/2012 | EP2470742A1 Ram boring device |
| 07/04/2012 | CN202300208U 一种新型锚杆钻机 A new bolt rig |
| 07/04/2012 | CN202300198U 井下减阻降扭器 Underground drag reduction down torque converter |
| 07/04/2012 | CN102536122A Clay drill bit |
| 07/04/2012 | CN102536114A Mechanical underground vibration-absorption punching drilling tool |
| 07/04/2012 | CN102536113A Underground electric drill device and method capable of reducing torque borne by drill stem |
| 07/04/2012 | CN102536112A Sealable screw drill transmission shaft |
| 07/03/2012 | US8210251 Slickline conveyed tubular cutter system |
| 06/28/2012 | WO2012087752A2 High temperature drilling motor drive with cycloidal speed reducer |
| 06/28/2012 | US20120160569 High Temperature Drilling Motor Drive with Cycloidal Speed Reducer |
| 06/28/2012 | DE102011122353A1 Verdrahtete Schlammmotorkomponenten, Verfahren zu ihrer Herstellung und Untertagemotoren mit denselben Wired mud motor components, processes for their preparation and downhole motors with the same |
| 06/27/2012 | EP2198108B1 Hydrodynamic bearing assemblies, and hydrodynamic bearing apparatuses and motor assemblies using same |
| 06/27/2012 | CN202284448U 杂填土层钻孔引孔钻具 Miscellaneous fill soil drilling drill hole lead |
| 06/27/2012 | CN202284447U 防腐耐磨高效螺杆钻具 Efficient corrosion resistant screw drill |
| 06/27/2012 | CN102518395A Self-propelled drilling robot |
| 06/27/2012 | CN102518393A Combined down-the-hole hammer |
| 06/26/2012 | US8205690 Dual acting locking jar |
| 06/21/2012 | US20120152576 Extra area down-hole hammer apparatus and method |
| 06/20/2012 | EP2466056A2 Rotatable wireline tool of enhanced hydraulic drive consistency |
| 06/20/2012 | CN202280423U 新型无钻杆钻机 New non-drill rig |
| 06/19/2012 | CA2509085C Bore hole tool assembly, bearing system for use in such a bore hole tool assembly, and method of designing such a bore hole tool assembly |
| 06/14/2012 | DE102011120563A1 Aktive Kompensation eines Schlammtelemetriemodulators und einer Turbine Active compensation of a mud telemetry modulator and a turbine |
| 06/13/2012 | EP2462303A2 Bit assembly for a down-the-hole hammer drill |
| 06/13/2012 | CN102493764A Integrated drilling machine capable of being quickly detached and hung on excavator working arm |
| 06/13/2012 | CN102493763A Robot imitating earthworm to penetrate into earth |
| 06/07/2012 | WO2011128045A3 Ground-drilling device |
| 06/07/2012 | US20120138298 Methods and apparatus for wellbore construction and completion |
| 06/05/2012 | US8191652 Directional control drilling system |
| 06/05/2012 | CA2646012C Seal assembly for use in a top drive |
| 05/31/2012 | US20120132470 Apparatus and method for controlling or limiting rotor orbit in moving cavity motors and pumps |
| 05/31/2012 | DE102011119465A1 Untertagemotor- oder Untertagepumpenkomponenten, Verfahren zu ihrer Herstellung und damit versehene Untertagemotoren Untertagemotor- or downhole pump components, process for their preparation and thus provided downhole motors |
| 05/30/2012 | CN202260662U Hydraulic forming equal wall-thickness screw stator |
| 05/30/2012 | CN202260661U Combined all-metal screw stator |
| 05/30/2012 | CN202260656U Screw motor with equal inner and outer wall thickness |
| 05/30/2012 | CN202249782U Stone-crushing drill bit |
| 05/30/2012 | CN202249754U Pneumatic down hole hammer with drilling and coring device |
| 05/30/2012 | CN202249753U Down hole hammer drill bit shank one-way valve |
| 05/30/2012 | CN202249752U Seal transmission shaft |
| 05/30/2012 | CN202249735U Full-sleeve full-rotation drilling machine |
| 05/30/2012 | CN102482917A 冲击钻设备 The impact of drilling equipment |
| 05/30/2012 | CN101694149B Deep well drilling speed reducer and working method thereof |
| 05/30/2012 | CN101469603B Automatic assembling and disassembling system for drill pipe |
| 05/30/2012 | CN101438025B Equipment and method for selective determination of bit face orientation |
| 05/29/2012 | CA2759473A1 Downhole motor or pump components, methods of fabrication the same, and downhole motors incorporating the same |
| 05/29/2012 | CA2716430C Pump drive head with stuffing box |
| 05/29/2012 | CA2541339C Drive shaft for motor |
| 05/24/2012 | WO2012068522A2 Apparatus and method for controlling or limiting rotor orbit in moving cavity motors and pumps, such as mud motors |
| 05/24/2012 | WO2012065240A1 Hybrid power system |
| 05/24/2012 | US20120127829 Generating fluid telemetry |
| 05/24/2012 | CA2817844A1 Hybrid power system |
| 05/23/2012 | CN202227981U Rapid piling device |
| 05/23/2012 | CN202227979U Hydraulic vibration impacter and piling power head formed by same |
| 05/23/2012 | CN202227978U Hydraulic system for petroleum top drive drilling device |
| 05/23/2012 | CN202227977U Transmission shaft assembly of screw drilling tool for balancing pressure of oil seal cavity |
| 05/23/2012 | CN102465667A 一种新型的螺杆钻具结构 A new type of screw drill structure |
| 05/23/2012 | CN101624896B Double power head drilling equipment |
| 05/23/2012 | CN101598002B Door frame type drilling machine |
| 05/22/2012 | US8181720 Sealing system and bi-directional thrust bearing arrangement for a downhole motor |
| 05/22/2012 | US8181719 Flow pulsing device for a drilling motor |
| 05/22/2012 | US8181717 Power tool with battery pack ejector |
| 05/22/2012 | CA2530040C Percussive drill with adjustable flow control |
| 05/22/2012 | CA2516476C A hydraulic percussive in-hole rock drilling machine |
| 05/17/2012 | US20120118648 Down-the-Hole Hammer Drill |
| 05/17/2012 | US20120118647 Downhole mud motor and method of improving durabilty thereof |
| 05/17/2012 | US20120118646 Borehole cutting assembly for directional cutting |
| 05/16/2012 | CN102454423A Turbine stator and rotor assembly |
| 05/09/2012 | EP2449202A1 Vibrating downhole tool |
| 05/09/2012 | CN202215154U Angle adjusting mechanism for coal mine drilling rig |
| 05/09/2012 | CN202215147U High air pressure down-the-hole hammer |
| 05/08/2012 | US8172002 Methods of controlling hydraulic motors |
| 05/08/2012 | CA2436944C Tractor with improved valve system |
| 05/03/2012 | WO2012057432A1 Ground drilling hammer and sleeve thereof |
| 05/03/2012 | WO2012055392A2 Direct drill bit drive for tools on the basis of a heat engine |
| 05/03/2012 | WO2012055036A1 Submersible progressive cavity pump driver |
| 05/03/2012 | DE102010050244A1 Meißeldirektantrieb für Werkzeuge auf Basis einer Wärmekraftmaschine Direct bit drive for tools on the basis of a heat engine |
| 05/03/2012 | CA2816470A1 Direct drill bit drive for tools on the basis of a heat engine |
| 05/03/2012 | CA2816365A1 Submersible progressive cavity pump driver |
| 05/02/2012 | EP2446103A2 Sealing system and bi-directional thrust bearing arrangement for a downhole motor |
| 05/02/2012 | CN202210711U Rubber interlayer metal stator screw |
| 05/02/2012 | CN1811126B Agitator |
| 05/02/2012 | CN102434513A Integrated control hydraulic valve system for rock driller |
| 05/02/2012 | CN102434113A Front connector of high air-pressure down-the-hole hammer |
| 05/02/2012 | CN102434110A High-speed turbine section for turbine drilling tool |
| 05/02/2012 | CN102434097A Rapid piling process |
| 05/02/2012 | CN102434095A High wind pressure downhole hammer |
| 05/02/2012 | CN102434094A Piston tail pipe type impacter of valveless single-cylinder type downhole |
| 05/02/2012 | CN102434093A Piston-guide-sleeve-type valveless single-cylinder-type high-efficiency down-hole hammer |
| 05/01/2012 | US8167051 Selective agitation |
| 05/01/2012 | CA2518146C Bearing assembly for downhole mud motor |
| 04/25/2012 | CN102425369A 回转限扭装置 Rotary Torque Limiter device |
| 04/21/2012 | CA2755592A1 Down-the-hole drill hammer having a sliding exhaust check valve |
| 04/19/2012 | CA2814141A1 A down-the-hole hammer |
| 04/18/2012 | CN202194566U 防反转增效螺杆钻具 Synergistic anti-reverse screw drill |
| 04/18/2012 | CN202194565U 用于顶部驱动钻井装置的水龙头外壳 Faucet housing for top drive drilling unit |
| 04/18/2012 | CN202194564U 一种可以应用于绳索取心钻进的涡轮钻具 One kind can be applied to the rope coring drilling turbodrill |
| 04/18/2012 | CN202194556U 液压带压钻孔机床 Hydraulic Pressure Drilling Machine |
| 04/18/2012 | CN102418473A 地下挖掘用挖掘装置、旋转式挖掘机和地下挖掘方法 Underground digging and digging, rotary excavator and underground mining methods |