| 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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| 08/01/2012 | EP2480750A2 Wireline cable for use with downhole tractor assemblies |
| 08/01/2012 | CN202360053U Tool transporting device for deepwater drilling |
| 08/01/2012 | CN102619483A Double-system jam release safe hydraulic anchor |
| 08/01/2012 | CN102619482A Quick-mounting device for oil pipe plug valve |
| 08/01/2012 | CN102619481A Mechanical completion string running tool |
| 08/01/2012 | CN101443529B Fracturing system without intervention |
| 08/01/2012 | CA2740664A1 Apparatus for connecting downhole tools to a wireline |
| 07/31/2012 | US8230932 Multifunction downhole release tool mechanism with lost motion |
| 07/31/2012 | US8230931 Lifting device and method for lifting a bonnet |
| 07/31/2012 | US8230928 Low profile internal tree cap |
| 07/31/2012 | US8230920 Extended reach whipstock and methods of use |
| 07/31/2012 | US8230914 Anchor tool |
| 07/26/2012 | US20120186829 Setting Tool |
| 07/26/2012 | US20120186819 Varying pore size in a well screen |
| 07/26/2012 | US20120186806 Dog with Skirt to Transfer Housing Loads in a Subterranean Tool |
| 07/26/2012 | US20120186805 Lock Mandrel Load Distribution Apparatus |
| 07/26/2012 | US20120186804 Tapered Dog Configuration to Share Stress in a Housing of a Subterranean Tool |
| 07/25/2012 | EP2478180A1 A device and a system and a method of examining a tubular channel |
| 07/25/2012 | EP2288472B1 Abrasive cutting fluids |
| 07/25/2012 | CN202348190U Electro-hydraulic control system of hydraulic supports on thin seam working face |
| 07/25/2012 | CN202348189U Underwater wellhead test tool with combined lowering of casing hangers |
| 07/25/2012 | CN202348188U Relief pipeline fixer |
| 07/25/2012 | CN202348187U Hydraulic releasing tool |
| 07/25/2012 | CN102606101A Novel downhole positioning device |
| 07/25/2012 | CN102606100A Hydraulic anchor |
| 07/24/2012 | US8225860 Downhole jarring tool with reduced wear latch |
| 07/19/2012 | WO2012097071A2 Oilfield apparatus and method comprising swellable elastomers |
| 07/19/2012 | WO2012067842A3 Sealing devices having a non-elastomeric fibrous sealing material and methods of using same |
| 07/19/2012 | US20120181050 Method and apparatus for setting a packer |
| 07/19/2012 | US20120181045 Apparatus and Method for Controlling the Connection and Disconnection Speed of Downhole Connectors |
| 07/19/2012 | US20120181044 Flow control diverter valve |
| 07/19/2012 | US20120181039 Filtration systems for chemical fluids |
| 07/18/2012 | CN202338251U 辅助节流器解封的震击器 Auxiliary restrictor unsealed jars |
| 07/18/2012 | CN202338247U Three-phase releasing tool |
| 07/18/2012 | CN202338246U Disassembling device of rubber core of splitter |
| 07/18/2012 | CN202338245U 井口阀钢圈取出工具 Wellhead valve removal tool steel ring |
| 07/18/2012 | CN202338243U 电缆测井井控悬挂装置 Wireline Well Control suspension |
| 07/18/2012 | CN102587853A Pressure compensating device |
| 07/18/2012 | CN102587852A Liner hanger and setting tool |
| 07/18/2012 | CN102587851A Running tool with feedback mechanism |
| 07/18/2012 | CN101392633B Mechanical and hydraulic double-acting expansion sieve tube hanger |
| 07/17/2012 | US8220555 Downhole tool shifting mechanism and method for shifting a downhole tool |
| 07/17/2012 | US8220550 Wellhead housing bootstrap device |
| 07/17/2012 | US8220534 Safety device for an oil well and associated safety installation |
| 07/17/2012 | CA2725055C Retrieval tool with slips for retrieving bottom hole assembly during casing while drilling operations |
| 07/17/2012 | CA2638731C Hydraulic running tool assembly and method of its use |
| 07/12/2012 | WO2012094488A2 Shape memory material packer for subterranean use |
| 07/12/2012 | WO2012092657A1 Well tool with shearable collet |
| 07/12/2012 | WO2012065126A3 Remote operation of setting tools for liner hangers |
| 07/12/2012 | WO2012061096A3 Redundant position reference system for multilateral exit construction and method for use of same |
| 07/12/2012 | US20120175131 ID Centralizer |
| 07/12/2012 | US20120175113 Controlled hydrostatic pressure completion system |
| 07/12/2012 | CA2823563A1 Shape memory material packer for subterranean use |
| 07/11/2012 | CN202325451U 稠油细分层调剖管柱 Heavy subdivision layer profile column |
| 07/11/2012 | CN202325335U 液压锚定器 Hydraulic anchor |
| 07/11/2012 | CN202325334U 一种连续油管爬行器 A continuous tubing crawler |
| 07/11/2012 | CN202325333U 膨胀尾管悬挂器 Expansion liner hanger |
| 07/11/2012 | CN202325332U 阻止生产套管上窜锚定加固治理装置 Production casing to prevent channeling anchoring reinforcing control device |
| 07/11/2012 | CN202325331U 坐封可靠易解封螺杆泵油管锚 Packer reliable and easy unblocking screw anchor tubing |
| 07/11/2012 | CN202325330U 水力锚锚爪拔出工具 Hydraulic anchor fluke extraction tool |
| 07/11/2012 | CN202325329U 水力锚容积管拔出工具 Volume hydraulic anchor tube extraction tool |
| 07/11/2012 | CN202325328U 一种单卡瓦双作用非循环坐封导斜器悬挂工具 A single-kava dual role of non-circulating packer tool guide ramp is suspended |
| 07/11/2012 | CN202325327U Loose leaf type block fork of well testing instrument string |
| 07/11/2012 | CN202325326U 一种用于垂直井内仪器和电缆的起下辅助工具 Began a vertical borehole instruments and aids for cable |
| 07/11/2012 | CN202325325U 一种井下管柱双作用丢手装置 A downhole string double-acting hand lost device |
| 07/11/2012 | CN102561979A System and method for inductive signal and power transferred from ROV to in riser tools |
| 07/11/2012 | CN102561969A Light and convenient resistance meeting preventive pressured cable lowering conveyor |
| 07/11/2012 | CN102561968A Large-tonnage continuous tube drawing bench |
| 07/11/2012 | CN102561967A Release device for deep mine cylinder |
| 07/11/2012 | CN102561966A Multifunction downhole release tool mechanism with lost motion |
| 07/11/2012 | CN102561965A Quick releaser of marine steel wire operating tool |
| 07/11/2012 | CN101636551B Device or actuating a bottom tool |
| 07/10/2012 | US8215405 Method to shut down a high pressure oil/gas well that is leaking under blowout conditions |
| 07/10/2012 | US8215382 Motion transfer from a sealed housing |
| 07/10/2012 | CA2668534C Downhole anchoring tools conveyed by non-rigid carriers |
| 07/10/2012 | CA2560134C Downhole tool actuation apparatus and method |
| 07/05/2012 | WO2012092023A2 System and method for positioning a bottom hole assembly in a horizontal well |
| 07/05/2012 | WO2012091984A2 Dissolvable barrier for downhole use and method thereof |
| 07/05/2012 | WO2012091983A2 Secondary flow path module, gravel packing system including the same, and method of assembly thereof |
| 07/05/2012 | WO2012091840A2 Isolation of zones for fracturing using removable plugs |
| 07/05/2012 | WO2012091838A2 Flexible collet anchor assembly with compressive load transfer feature |
| 07/05/2012 | WO2012058551A3 Remote pig launcher |
| 07/05/2012 | WO2012054253A3 Apparatus and method for compensating for pressure changes within an isolated annular space of a wellbore |
| 07/05/2012 | WO2012051409A3 Apparatus including metal foam and methods for using same downhole |
| 07/05/2012 | US20120168181 Conformable inflow control device and method |
| 07/05/2012 | US20120168178 Well Tool with Shearable Collet |
| 07/05/2012 | US20120168176 Downhole Tool With Roller Screw Assembly |
| 07/04/2012 | EP2470749A2 Method and apparatus for dropping a pump down plug or ball |
| 07/04/2012 | EP2288471B1 Method of creating an underwater cutting zone, and related plugging devices and methods |
| 07/04/2012 | CN202300261U Delivery and pressure transmission system for oil-water well snubbing operation capillary tube |
| 07/04/2012 | CN102536210A Direct-reading and testing integrated machine for downhole parameters of vertical well and horizontal well of oil field |
| 07/04/2012 | CN101718173B Petroleum multilateral well solid expandable tubular (SET) bifurcation structure and construction method |
| 07/04/2012 | CN101705800B Anti-falling hanging device |
| 07/03/2012 | US8210270 Drilling and completion deflector and method of using |
| 07/03/2012 | US8210268 Top drive system |
| 07/03/2012 | US8210264 Subsea overload release system and method |
| 07/03/2012 | CA2638260C Lockable anchor for insertable progressing cavity pump |
| 06/28/2012 | WO2012088058A2 Sampling assembly for a single packer |
| 06/28/2012 | WO2012087516A2 Downhole release joint with radially expandable member |
| 06/28/2012 | WO2012087479A1 Wet disconnect system with post disconnection pressure integrity |