| Patents for E21B 23 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells (12,712) |
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| 02/07/2013 | CA2843505A1 A downhole device for data acquisition during hydraulic fracturing operation and method thereof |
| 02/06/2013 | EP2553211A2 Downhole actuating apparatus |
| 02/06/2013 | EP2553210A2 Mechanical counter |
| 02/06/2013 | CN202718645U Extracting tool special for hydraulic injector |
| 02/06/2013 | CN102913182A Slip type puller damper |
| 02/06/2013 | CN102913161A Straightening and anchoring device applied to horizontal open hole well |
| 02/05/2013 | US8365842 Ratchet mechanism in a fluid actuated device |
| 02/05/2013 | US8365833 Variable Tg shape memory polyurethane for wellbore devices |
| 02/05/2013 | US8365832 Position retention mechanism for maintaining a counter mechanism in an activated position |
| 02/05/2013 | CA2664979C Method and apparatus for anchoring downhole tools in a wellbore |
| 01/31/2013 | WO2013015800A1 Downhole line tool assembly and method for use thereof |
| 01/31/2013 | WO2012129029A4 Multiple liner hanger assembly |
| 01/31/2013 | US20130025885 Downhole Line Tool Assembly and Method for Use Thereof |
| 01/31/2013 | US20130025884 Low stress traction system |
| 01/31/2013 | US20130025883 Permanent or removable positioning apparatus and method for downhole tool operations |
| 01/31/2013 | US20130025882 Method to restrict the number of cycles in a continuous j-slot in a downhole tool |
| 01/31/2013 | US20130025871 Plug counter, fracing system and method |
| 01/31/2013 | US20130025852 Apparatus and system and method of measuring data in a well extending below surface |
| 01/31/2013 | US20130025845 Kick over tool |
| 01/30/2013 | CN202706967U Press-in device of pumping well polish rod sealing element |
| 01/30/2013 | CN202706966U Novel sleeve pipe pre-stress ground anchor |
| 01/30/2013 | CN202706965U Transporting device of oil drilling blowout preventer |
| 01/30/2013 | CN202706964U Tool for replacing packing |
| 01/30/2013 | CN202706963U Withdrawing device for oil pumping well polished rod sealing element |
| 01/30/2013 | CN202706962U Blowout wrecking device for mechanically installing plug valve |
| 01/30/2013 | CN202706961U Rail-mounted pipe column positioner |
| 01/30/2013 | CN102900389A Self-locked hydraulic drilling tool holder |
| 01/30/2013 | CN101871332B Multi-way releasing device |
| 01/29/2013 | US8360161 Downhole device actuator and method |
| 01/29/2013 | US8360142 High-ratio tubular expansion |
| 01/24/2013 | WO2013012553A2 Downhole fluid-flow communication technique |
| 01/24/2013 | US20130020096 Method and Apparatus for Catching and Retrieving Objects in a Well |
| 01/24/2013 | US20130020095 Adjustable Mudline Tubing Hanger Suspension System |
| 01/24/2013 | US20130020092 Remote Manipulation and Control of Subterranean Tools |
| 01/24/2013 | US20130020084 Affixation and release assembly for a mill and method |
| 01/23/2013 | CN202689989U Drop-preventing end cap for testing instrument |
| 01/23/2013 | CN202689982U Hanger for pressing cap of packing box |
| 01/23/2013 | CN102889064A Method for fixing underground corrugated pipe |
| 01/23/2013 | CN102889063A Suspension device for expansion pipe used in thermal recovery horizontal well and using method for suspension device |
| 01/23/2013 | CN102889056A Drill bushing drilling device for petroleum drilling |
| 01/23/2013 | CN101824964B Downhole drill of intelligent underground multi-branch horizontal drilling completion system |
| 01/22/2013 | CA2701909C Apparatus and method for ratcheting stimulation tool |
| 01/22/2013 | CA2667643C Borehole measurements using a fast and high energy resolution gamma ray detector assembly |
| 01/17/2013 | WO2013007026A1 Disconnector of downhole tool |
| 01/17/2013 | WO2012158372A3 Tubular cutting with a sealed annular space and fluid flow for cuttings removal |
| 01/17/2013 | WO2012115889A3 Expandable packer with expansion induced axially movable support feature |
| 01/17/2013 | US20130014957 Downhole Guiding Tool |
| 01/17/2013 | US20130014939 Electric Hydraulic Interface For A Modular Downhole Tool |
| 01/17/2013 | US20130014932 Automatic modular maintenance device operating in the annulus of a well for the production of hydrocarbons |
| 01/16/2013 | CN202673274U Wheel type extensible continuous crawl tractor for horizontal well |
| 01/16/2013 | CN202673213U Anchor fluke non-falling hydraulic anchor |
| 01/16/2013 | CN202673212U Integral hanger for hydraulic cylinder piston |
| 01/16/2013 | CN202673211U Tie-back inserting sealing tail pipe hanger |
| 01/16/2013 | CN102877881A Supporting device used for hydrofracture hole-sealing capsule |
| 01/16/2013 | CN102877810A Casing hanger and seal lowering tool for ocean deepwater drilling |
| 01/16/2013 | CN102877807A High-pressure well head temporary guide base lowering tool for floating drilling system |
| 01/15/2013 | US8353354 Crawler system for an earth boring system |
| 01/15/2013 | CA2704834C Screened valve system for selective well stimulation and control |
| 01/15/2013 | CA2679601C Wireline tractor device |
| 01/15/2013 | CA2546358C Downhole tool |
| 01/14/2013 | CA2782897A1 Control line space out tool |
| 01/10/2013 | WO2013003939A1 Cement head with hammer union |
| 01/10/2013 | WO2012158370A3 Tubular cutting with debris filtration |
| 01/10/2013 | US20130008669 System and method for coupling downhole tools |
| 01/10/2013 | US20130008659 Wellbore laser operations |
| 01/10/2013 | US20130008645 Intelligent Well System And Method |
| 01/09/2013 | CN202659228U Perforation pressure gage, dispenser of perforation pressure gage and fisher of perforation pressure gage |
| 01/09/2013 | CN202659187U Variable diameter setting screw pump tubing anchor |
| 01/09/2013 | CN202659186U Anchoring device for cam type screw pump well oil pipe |
| 01/09/2013 | CN202659185U Elastic release releasing tool |
| 01/09/2013 | CN202659184U Reliable releasing device |
| 01/09/2013 | CN202659183U Multifunctional downhole positioning device for oil drilling and production |
| 01/09/2013 | CN102041973B Small-hole hanger |
| 01/09/2013 | CN101871333B Hydraulic liner releaser and release method for oil and gas wells |
| 01/08/2013 | US8347966 Seal system and method |
| 01/08/2013 | CA2783098A1 Electromechanical assembly for connecting a series of perforating guns in oil and gas wells |
| 01/08/2013 | CA2697133C Apparatus and method for inserting and retrieving a tool string through well surface equipment |
| 01/08/2013 | CA2661725C Method and system for accessing subterranean deposits from the surface |
| 01/08/2013 | CA2467381C Mono diameter wellbore casing |
| 01/04/2013 | CA2782103A1 A method for conveying actuator balls downhole using a ball carrier medium |
| 01/03/2013 | WO2013003841A1 Whole-body pletysmography system for the continuous characterization of sleep and breathing in a mouse |
| 01/03/2013 | WO2013001062A1 Gas lift kickover system |
| 01/03/2013 | US20130000924 Expandable liner system |
| 01/03/2013 | US20130000906 Wellbore laser operations |
| 01/03/2013 | CA2840463A1 Gas lift kickover system |
| 01/02/2013 | EP2540955A1 Gas lift kickover system |
| 01/02/2013 | CN202645482U Oil tube fixing device |
| 01/02/2013 | CN202645481U Device capable of placing support column in multi-branch horizontal well |
| 01/02/2013 | CN102852479A Special eccentric correcting hanger for casing fracture horizontal workover sleeve |
| 01/02/2013 | CN102852477A Electric salvage device |
| 01/02/2013 | CN102852476A Underground stretching tool |
| 01/02/2013 | CN101772617B Method for altering the stress state of a formation and/or a tubular |
| 12/27/2012 | WO2012178214A2 Pump drain arrangements for packer systems and methods for sampling underground formations using same |
| 12/27/2012 | WO2012174663A1 Fracturing port locator and isolation tool |
| 12/27/2012 | WO2012146970A3 Smart hydraulic pumping device for recovering oil and obtaining down-hole information |
| 12/27/2012 | US20120325497 Coatings for wellbore tools, components having such coatings, and related methods |
| 12/27/2012 | US20120325479 Coiled tubing bottom hole assembly with packer and anchor assembly |
| 12/27/2012 | CA2840164A1 Tool and method for locking and releasing a plug |
| 12/27/2012 | CA2840163A1 Plug, and methods for setting and releasing the plug |
| 12/27/2012 | CA2839712A1 Pump drain arrangements for packer systems and methods for sampling underground formations using same |