| 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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| 09/28/2011 | CN201991473U 一种修井用的套管悬挂装置 One kind of workover Sleeves suspension |
| 09/28/2011 | CN201991472U 尾管悬挂器抗回流结构 Anti-reflux liner hanger structure |
| 09/28/2011 | CN102199999A Anti-drop method for screw pump oil extraction pipe column |
| 09/27/2011 | US8025105 Downhole tool retrieval and setting system |
| 09/27/2011 | CA2551981C Improved traction control for downhole tractor |
| 09/22/2011 | WO2009135217A3 Apparatus and methods for wedge lock prevention |
| 09/22/2011 | US20110226489 Differential Shifting Tool and Method of Shifting |
| 09/22/2011 | US20110226488 Tubing string hanger and tensioner assembly |
| 09/22/2011 | US20110226482 Apparatus and Method for Separating a Tubular String from a Subsea Well Installation |
| 09/22/2011 | US20110226466 Electric Submersible Pump Service Truck |
| 09/21/2011 | CN201982141U 井下复合线缆及其配套的安装装置 Downhole composite cables and supporting the mounting device |
| 09/21/2011 | CN201982042U 一种简易取盘根工具 A simple tool to take root |
| 09/21/2011 | CN201982041U 杆环井下引入器 Downhole introducer rod ring |
| 09/21/2011 | CN201982040U 盘根起出器 Packing from a reader |
| 09/21/2011 | CN102197189A Downhole tool with load diverting system and method |
| 09/21/2011 | CN102191923A Long-distance control wellhead operation device for workover operation |
| 09/20/2011 | US8020627 Equalized load distribution slips for spider and elevator |
| 09/20/2011 | US8020623 Control module for subsea equipment |
| 09/20/2011 | CA2497269C Methods and systems to activate downhole tools with light |
| 09/19/2011 | CA2733704A1 Electric submersible pump service truck |
| 09/15/2011 | WO2011112324A2 Feed chain automatic tensioner |
| 09/15/2011 | WO2011090639A3 Method and apparatus for releasing a packer |
| 09/15/2011 | WO2009155249A4 Extrusion-resistant nose seal |
| 09/15/2011 | US20110220370 Method and system for fixing an element in a borehole |
| 09/15/2011 | US20110220369 Methods and apparatus relating to expansion tools for tubular strings |
| 09/15/2011 | US20110220356 Multiple stage cementing tool with expandable sealing element |
| 09/15/2011 | US20110220346 Downhole Actuator |
| 09/14/2011 | EP2364395A1 Method and device for cleaning a cavity in a petroleum well |
| 09/14/2011 | EP2140099B1 Anchor tool |
| 09/14/2011 | CN201972636U 旁通阀阀芯取出工具 Bypass valve spool extraction tool |
| 09/14/2011 | CN201972617U 一种油田管道水平脱节器 One kind of level of oil pipeline out of touch devices |
| 09/14/2011 | CN102182412A Complete equipment for plugging liner during operation under pressure |
| 09/13/2011 | CA2643206C Self-orienting selectable locating collet and method for location within a wellbore |
| 09/13/2011 | CA2514136C Apparatus and methods of setting and retrieving casing with drilling latch and bottom hole assembly |
| 09/09/2011 | WO2011056394A3 Systems and methods for initiating annular obstruction in a subsurface well |
| 09/08/2011 | US20110214884 Lining of well bores with expandable and conventional liners |
| 09/08/2011 | US20110214883 Large bore completions systems and method |
| 09/08/2011 | US20110214856 Method and system for controlling a well service rig based on load data |
| 09/07/2011 | CN201963234U 锚爪斜置式水力锚 Fluke ramp-mounted hydraulic anchor |
| 09/07/2011 | CN201963233U 井口法兰倒扣器 Wellhead flange upside down device |
| 09/07/2011 | CN201963232U 气井井口保护器阀芯拆装工具 Gas wellhead protection spool removal tools |
| 09/06/2011 | US8011434 Subsea securing devices |
| 09/06/2011 | US8011428 Downhole decelerating device, system and method |
| 09/01/2011 | US20110209877 Apparatus for, and method of, landing items at a well location |
| 08/31/2011 | CN201953331U 一种新型尾管胶塞接头 A new tail pipe stopper fittings |
| 08/30/2011 | US8006771 Methods for expanding tubular strings and isolating subterranean zones |
| 08/30/2011 | US8006770 Expandable casing with enhanced collapse resistance and sealing capability |
| 08/30/2011 | US8006765 Well servicing tool storage system for subsea well intervention |
| 08/26/2011 | CA2732708A1 Expandable structure for deployment in a well |
| 08/25/2011 | US20110203810 Method and system for hydraulically presetting a metal seal |
| 08/25/2011 | US20110203794 Apparatus and Method for Cementing Liner |
| 08/25/2011 | US20110203789 Pressure equalising devices |
| 08/24/2011 | CN201943636U 一种采油井口 One kind of wellhead |
| 08/24/2011 | CN201943616U 盘根起出器 Packing from a reader |
| 08/23/2011 | US8002045 Downhole tool with load diverting system and method |
| 08/23/2011 | US8002042 Actuatable subsurface safety valve and method |
| 08/23/2011 | US8002030 Retrievable bridge plug |
| 08/23/2011 | US8001858 Pipeline inspection apparatus and method using radio frequency identification and inertial navigation |
| 08/23/2011 | CA2577573C Packers and methods of use |
| 08/23/2011 | CA2567160C Anchoring system and method |
| 08/23/2011 | CA2466389C Well communication system |
| 08/18/2011 | WO2011068690A3 Gas lift valve |
| 08/18/2011 | WO2011059925A3 Deploying an electrically-activated tool into a subsea well |
| 08/18/2011 | US20110198099 Anchor apparatus and method |
| 08/18/2011 | CA2789015A1 System and method for determining position within a wellbore |
| 08/17/2011 | EP2356308A1 System and method for preventing slippage and rotation of components in a tubular housing |
| 08/17/2011 | EP1888871B1 Casing and drill pipe filling and circulation apparatus |
| 08/17/2011 | CN201934050U 一种钻井用的闸板防喷器 One kind of drilling ram BOP |
| 08/17/2011 | CN201934043U 多功能尾管悬挂器 Multifunction liner hanger |
| 08/17/2011 | CN201934042U 一种卡瓦内嵌式旋转尾管悬挂器 One kind of kava embedded rotating liner hanger |
| 08/17/2011 | CN102159789A Seat apparatus and method |
| 08/16/2011 | US7997336 Method and apparatus for retrieving an assembly from a wellbore |
| 08/16/2011 | CA2613080C Embedded flex-lock slip liner hanger |
| 08/11/2011 | US20110192615 Degradable Polymers for Hydrocarbon Extraction |
| 08/11/2011 | US20110192614 Torque Transmitting Load Shoulder |
| 08/10/2011 | EP2354437A2 Methods and systems for orienting in a wellbore |
| 08/10/2011 | EP2352899A1 Downhole actuator |
| 08/10/2011 | CN201924870U 液压坐封工具 Hydraulic packer tool |
| 08/10/2011 | CN201924868U 抽油井防喷盒压帽固定装置 Pumping well blowout preventer box pressure cap fixtures |
| 08/10/2011 | CN201924853U 水下井口用密封总成取出工具 Subsea wellhead seal assembly extraction tool |
| 08/10/2011 | CN201924852U 带压钻孔引流装置 Pressure drilling drainage device |
| 08/10/2011 | CN201924851U 抽油机脱载器 Pumping off Uploader |
| 08/10/2011 | CN1776196B Method and system for accessing subterranean deposits from the surface |
| 08/10/2011 | CN102146778A Through-tubing operation system for wireline pulling electric pump |
| 08/10/2011 | CN102146777A Methods and systems for orienting in a wellbore |
| 08/10/2011 | CN101124383B Improved anchor arm for seismic logging tool |
| 08/10/2011 | CA2733290A1 Downhole device actuator and method |
| 08/09/2011 | US7992636 Device and method for retrieving debris from a well |
| 08/09/2011 | CA2586183C Conveyor tube for use in installing or replacing a well tool in a producing well and procedures for use of the same |
| 08/04/2011 | WO2011094274A2 Collet system |
| 08/04/2011 | WO2011093902A1 Method and apparatus for sealing an annulus of a wellbore |
| 08/04/2011 | WO2011093717A2 A tool for installing units in a well |
| 08/04/2011 | WO2011071619A3 Ultra high temperature packer by high-temperature elastomeric polymers |
| 08/04/2011 | WO2011062784A3 Anchor/shifting tool with sequential shift then release functionality |
| 08/04/2011 | WO2011059743A3 Tubular actuator, system and method |
| 08/04/2011 | WO2011049941A3 Downhole release joint with radially expandable members |
| 08/04/2011 | CA2788553A1 Method and apparatus for sealing an annulus of a wellbore |
| 08/04/2011 | CA2786483A1 A tool for installing units in a well |
| 08/03/2011 | EP2351904A1 Methods and apparatus for a downhole tool |
| 08/03/2011 | EP2350420A1 Rock drilling device |