| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 06/13/2012 | CN202273629U 油井套管测压防盗油装置 Pressure oil well casing theft device |
| 06/13/2012 | CN202273628U 一种双层防渗漏分合式密封环密封器 A two-layer anti-leakage points fit sealing ring sealer |
| 06/13/2012 | CN202273627U 多功能压井放喷管汇 Multifunction kill put the nozzle sinks |
| 06/13/2012 | CN202273626U 桥塞式管内堵塞器 Bridge plug tube blockage is |
| 06/13/2012 | CN202273621U 一种旋转式油管锚 A rotary tubing anchor |
| 06/13/2012 | CN202273619U 可钻式预应力固井地锚 Prestressed cementing drill anchor |
| 06/13/2012 | CN1930361B A method and operation device for establishing a drilling of an underground well, and arranging dilatable shell or sand sieve and well completion pipe in the drilling |
| 06/13/2012 | CN102493782A Bridge plug for horizontal well |
| 06/13/2012 | CN102493781A Loess formation conduit plugging and annulus external fill balance anti-leakage process |
| 06/13/2012 | CN102493780A Hydraulic delivery type tubing plug |
| 06/13/2012 | CN102493779A Picker and method for picking targeted object |
| 06/13/2012 | CN102493778A Instrument for plugging central hole of eccentric water distributor |
| 06/13/2012 | CN102493777A Hydraulic release plugging device |
| 06/13/2012 | CN102493776A Hole sealing bag with magnetic stirring function |
| 06/13/2012 | CN102493775A Electric fishing device |
| 06/13/2012 | CN102493773A Spirally wound packing filling device |
| 06/12/2012 | US8196665 Method and apparatus for containing an oil spill caused by a subsea blowout |
| 06/12/2012 | US8196651 Well bore fluid redistribution and fluid disposal in wellbore environments |
| 06/12/2012 | US8196650 Combination swivel and ball dropper |
| 06/12/2012 | CA2533424C System for sealing a space in a wellbore |
| 06/12/2012 | CA2490928C Fluid loss additives and methods |
| 06/08/2012 | CA2758514A1 Compositions and methods for well completions |
| 06/07/2012 | WO2012074836A2 Removable insert for formation of a recess in a tubular by expansion |
| 06/07/2012 | WO2012074686A1 Anti-extrusion backup system, packing element system having backup system, and method |
| 06/07/2012 | WO2012073003A1 Monitoring a subsea installation |
| 06/07/2012 | WO2012071667A1 Production tubing and pump driver control lines combination for suspending progressive cavity pump and pump driver in a production assembly |
| 06/07/2012 | WO2012047534A3 Fill up and circulating tool with well control feature |
| 06/07/2012 | WO2012045995A3 Seal leakage detection |
| 06/07/2012 | WO2012041955A3 Drill pipe |
| 06/07/2012 | WO2012036917A3 Self-releasing plug for use in a subterranean well |
| 06/07/2012 | WO2012024208A3 Blowout preventer with shearing blades and method |
| 06/07/2012 | US20120139184 Dual Seal Tubing Hanger |
| 06/07/2012 | US20120138315 Downhole Seal |
| 06/07/2012 | US20120138308 Apparatus and Methods for Enhanced Well Control in Slim Completions |
| 06/07/2012 | US20120138300 Method of cementing using polymeric retarder |
| 06/07/2012 | US20120138299 Wellbore servicing compositions comprising a fluid loss agent and methods of making and using same |
| 06/07/2012 | US20120138298 Methods and apparatus for wellbore construction and completion |
| 06/07/2012 | US20120138297 Cementing Method and Apparatus for Use with Running String Having an Obstruction |
| 06/07/2012 | CA2818337A1 Anti-extrusion backup system, packing element system having backup system, and method |
| 06/07/2012 | CA2818048A1 Production tubing and pump driver control lines combination for suspending progressive cavity pump and pump driver in a production assembly |
| 06/06/2012 | EP2460974A2 Rechargeable system for subsea force generating device and method |
| 06/06/2012 | EP2459841A2 Measurement apparatus |
| 06/06/2012 | EP2118435B1 A method for recovering fluid used in powering an underwater apparatus submerged in deep water |
| 06/06/2012 | CN202266251U Spring type sliding sleeve opening tool |
| 06/06/2012 | CN202266250U A ball cage assembly structure of an intelligent sliding sleeve opening tool |
| 06/06/2012 | CN202266242U Gas well pumping and raining device |
| 06/06/2012 | CN202266238U 可取式桥塞 Retrievable bridge plug |
| 06/06/2012 | CN202266237U Stage cementing device for oil well completion |
| 06/06/2012 | CN202266236U 多功能注浆机 Multifunction grouting machine |
| 06/06/2012 | CN202266235U Expansion liner cementing tool |
| 06/06/2012 | CN202266234U Well completion tool without drilling plug |
| 06/06/2012 | CN202266233U 一种压缩式封隔器胶筒 A compression packer cones |
| 06/06/2012 | CN202266232U 封隔器 Packer |
| 06/06/2012 | CN202266231U 用于自膨胀封隔器的胶筒辅助承压装置 For self-expandable packer cones auxiliary pressure device |
| 06/06/2012 | CN202266230U 地质钻探孔用压力封闭孔止水器 Geological drilling holes closed pore pressure sealing device |
| 06/06/2012 | CN202266229U 井口采油装置 Wellhead oil unit |
| 06/06/2012 | CN202266228U 油田热采井口防喷装置 Heat oil wellhead blowout preventer |
| 06/06/2012 | CN202266227U 一种防喷反压装置 One kind of counter-pressure device BOP |
| 06/06/2012 | CN202266226U 油井井口加盘根用光杆卡座 Wellhead deck plus packing light pole |
| 06/06/2012 | CN202266225U 一种抽油机光杆润滑装置 One kind of pumping rod lubrication device |
| 06/06/2012 | CN202266203U 带压作业防顶压系统 Anti-pressure job with a top pressure system |
| 06/06/2012 | CN102486084A System for developing natural gas by gasifying deep coal |
| 06/05/2012 | US8191644 Temperature-activated swellable wellbore completion device and method |
| 06/05/2012 | US8191643 Downhole apparatus with a swellable seal |
| 06/05/2012 | US8191629 Pressure equalising devices |
| 06/05/2012 | US8191625 Multiple layer extrusion limiter |
| 06/05/2012 | US8191624 Bypass gas lift system for producing a well |
| 06/05/2012 | CA2642272C Cross-linking composition and method of use |
| 06/05/2012 | CA2606091C Seal system with backup having an anchor surface |
| 06/05/2012 | CA2541891C Zeolite-containing cement composition |
| 05/31/2012 | WO2012071231A2 Modular hydraulic packer-and-port system |
| 05/31/2012 | WO2012071217A2 Retrievable swellable packer |
| 05/31/2012 | WO2012071189A2 Swellable packer having thermal compensation |
| 05/31/2012 | WO2012068672A1 Method and apparatus for setting a wellbore packer |
| 05/31/2012 | WO2012068624A1 Valve apparatus |
| 05/31/2012 | WO2012040419A3 Pressure balanced drilling system and method using the same |
| 05/31/2012 | WO2012022987A3 Well intervention |
| 05/31/2012 | WO2012018937A9 Control line installation unit |
| 05/31/2012 | WO2011139399A3 Tunable floating seal insert |
| 05/31/2012 | WO2011107745A3 System and method for fluid diversion and fluid isolation |
| 05/31/2012 | WO2011042685A8 Interchangeable drillable tool |
| 05/31/2012 | US20120133098 Anti-extrusion backup system, packing element system having backup system, and method |
| 05/31/2012 | US20120132436 Blowout Preventer with Intervention, Workover Control System Functionality and Method |
| 05/31/2012 | US20120132424 Method of drilling from a shaft for underground recovery of hydrocarbons |
| 05/31/2012 | DE102010049224B4 Einrichtung zum Auffangen und Ableiten von aus einem Gewässergrund austretenden Flüssigkeiten und/oder Gasen Means for collecting and discharging from emerging from a body of water base liquids and / or gases |
| 05/31/2012 | CA2818906A1 Valve apparatus |
| 05/31/2012 | CA2813820A1 Method and apparatus for setting a wellbore packer |
| 05/30/2012 | EP2458143A2 Blowout preventer with IWOC functionality and method |
| 05/30/2012 | EP2458142A2 Emergency disconnect sequence video capture and playback |
| 05/30/2012 | EP2458141A2 Emergency disconnect sequence timer display and method |
| 05/30/2012 | EP2458140A1 Monitoring a subsea well installation |
| 05/30/2012 | CN202252387U Entire penetration sealing mechanism for high-pressure oil well cable penetrator |
| 05/30/2012 | CN202250166U Secondary high-pressure grouting hole packer |
| 05/30/2012 | CN202250161U Hole sealing device for CO2 gas extraction device |
| 05/30/2012 | CN202250046U Bidirectional extensible hole-sealing pressure-measuring device |
| 05/30/2012 | CN202250018U Underground separate-layer fracturing technical tubular column and drillable packer thereof |
| 05/30/2012 | CN202250015U Segmented fracturing device of slide sleeve packer |
| 05/30/2012 | CN202250010U Injection-production integrated double-tube thermal recovery wellhead device |
| 05/30/2012 | CN202250004U Closed layered water injection process pipe column |
| 05/30/2012 | CN202249937U Oil well casing wellhead valve |