| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 07/11/2012 | CN102575506A Use of foam shaper memory polymer to transport acid or other wellbore treatments |
| 07/11/2012 | CN102575505A Subsea winch |
| 07/11/2012 | CN102575504A Vertical connector for use on the seabed |
| 07/11/2012 | CN102575503A Pressure intensifier system for subsea running tools |
| 07/11/2012 | CN102562133A Device and method for sealing and drilling holes of gas drainage |
| 07/11/2012 | CN102562042A Signal transmission method for downhole measurement and control system |
| 07/11/2012 | CN102561994A Completion reoperation blowout control tail tube valve |
| 07/11/2012 | CN102561992A Deformation water stopper and grouting plugging process adopting same |
| 07/11/2012 | CN102561991A Small-diameter hydrostatic setting plug |
| 07/11/2012 | CN102561990A Repeatedly-setting high-pressure self-sealing leather cup assembly for packer |
| 07/11/2012 | CN102561989A Coal mine underground hydraulic fracturing hole sealing method |
| 07/11/2012 | CN102561988A Small-diameter water-swelling setting plug |
| 07/11/2012 | CN102561987A Steam injection thermosensitive expanding and folding type multiple-segment packer |
| 07/11/2012 | CN102561986A Oilfield blowout cover |
| 07/11/2012 | CN102561985A Rechargeable system for subsea force generating device and method |
| 07/11/2012 | CN102561984A Blowout preventer with intervention, workover control system functionality and method |
| 07/11/2012 | CN102561983A Anti-splash mechanism of oil pipes |
| 07/11/2012 | CN102561982A Internal blowout-proof tool for steam flooding well oil tube |
| 07/11/2012 | CN102561981A Emergency disconnect sequence video capture and playback |
| 07/11/2012 | CN102561980A Wellhead tree pressure compensating device |
| 07/11/2012 | CN102561979A System and method for inductive signal and power transferred from ROV to in riser tools |
| 07/11/2012 | CN102561978A Long-stroke no-killing well working device of oil-water well |
| 07/11/2012 | CN102561977A High-pressure high-flow water burst hole drilling safety system, mounting process thereof and service process |
| 07/11/2012 | CN102561976A Multifunctional fully-enclosed anti-theft wellhead device |
| 07/11/2012 | CN102561975A Lifting pressurized well-repairing technology in closed oil pipe |
| 07/11/2012 | CN102561974A Active casing hanger hook mechanism |
| 07/11/2012 | CN102561973A Waterproof device for drilling |
| 07/11/2012 | CN102561972A Seal of screw oil pumping unit |
| 07/11/2012 | CN102561969A Light and convenient resistance meeting preventive pressured cable lowering conveyor |
| 07/11/2012 | CN102561950A Process for realizing grouting consolidation for aggregates filled in cavities of strata and jetting drill bit |
| 07/11/2012 | CN101818619B Well cementation and completion structure and process for cased branch well with temporarily-sealed opening |
| 07/11/2012 | CN101532375B Method for recycling for failure of stage cementing unit and sealed circulation device |
| 07/10/2012 | US8215411 Cluster opening sleeves for wellbore treatment and method of use |
| 07/10/2012 | US8215405 Method to shut down a high pressure oil/gas well that is leaking under blowout conditions |
| 07/10/2012 | US8215399 Downhole shut off assembly for artificially lifted wells |
| 07/10/2012 | US8215396 Method and apparatus for dropping a pump down plug or ball |
| 07/10/2012 | US8215394 Control line patch |
| 07/10/2012 | US8215393 Method for treating well bore within a subterranean formation |
| 07/10/2012 | CA2727514A1 Wellhead for a hydrocarbon-producing wellbore |
| 07/10/2012 | CA2713715C Lost circulation material formulation and method of use |
| 07/10/2012 | CA2664458C Dual packer for a horizontal well |
| 07/10/2012 | CA2560134C Downhole tool actuation apparatus and method |
| 07/10/2012 | CA2505252C Method and apparatus for varying the density of drilling fluids in deep water oil drilling applications |
| 07/09/2012 | DE202012005822U1 Messvorrichtung zum Überwachen einer Verfüllung eines Bohrlochs Measuring device for monitoring a filling of a well bore |
| 07/05/2012 | WO2012091984A2 Dissolvable barrier for downhole use and method thereof |
| 07/05/2012 | WO2012091982A2 Plug-inducing matter and method of plugging a wellbore |
| 07/05/2012 | WO2012091840A2 Isolation of zones for fracturing using removable plugs |
| 07/05/2012 | WO2012091706A1 Subsea pressure control system |
| 07/05/2012 | WO2012090056A2 Downhole packer tool with antifracture means |
| 07/05/2012 | WO2012064812A3 Emergency control system for subsea blowout preventer |
| 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 | US20120169013 Metal seal |
| 07/05/2012 | US20120168651 Blowout preventer with shearing blades and method |
| 07/05/2012 | US20120168181 Conformable inflow control device and method |
| 07/05/2012 | US20120168180 Isolation of Zones for Fracturing Using Removable Plugs |
| 07/05/2012 | US20120168173 Wellhead tree pressure compensating device |
| 07/05/2012 | US20120168166 Methods Useful for Diverting Aqueous Fluids in Subterranean Operations |
| 07/05/2012 | US20120168163 Method and apparatus for completing a multi-stage well |
| 07/05/2012 | US20120168161 Plug-inducing matter and method of plugging a wellbore |
| 07/05/2012 | US20120168160 Swellable Packer Having a Cable Conduit |
| 07/05/2012 | US20120168159 Secondary flow path module, gravel packing system including the same, and method of assembly thereof |
| 07/05/2012 | US20120168152 Dissolvable barrier for downhole use and method thereof |
| 07/04/2012 | EP2472054A1 Downhole apparatus and method |
| 07/04/2012 | EP2472053A1 Downhole apparatus and method |
| 07/04/2012 | EP2472052A1 Downhole apparatus and method |
| 07/04/2012 | EP2472051A1 Downhole apparatus and method |
| 07/04/2012 | EP2470750A2 Fiber optic inner string position sensor system |
| 07/04/2012 | EP2470749A2 Method and apparatus for dropping a pump down plug or ball |
| 07/04/2012 | CN202302427U 防喷器防磨法兰 BOP flange wear |
| 07/04/2012 | CN202300353U 一种细分层掺水采油管柱 One kind of breakdown layer watered production string |
| 07/04/2012 | CN202300332U 用于柱塞采气系统的井下分级装置及多级柱塞采气系统 Classification device for downhole plunger gas production systems and multi-stage piston gas recovery system |
| 07/04/2012 | CN202300311U 双阀自灌式浮箍 Self-leveling double valve float collar |
| 07/04/2012 | CN202300310U 固井下灰车气压自控系统 Under pressure controlled system cementing gray car |
| 07/04/2012 | CN202300309U 可压井井下节流器 Downhole choke can kill |
| 07/04/2012 | CN202300308U 反洗井封隔器 Backwash well packer |
| 07/04/2012 | CN202300307U 裸眼封隔器 Openhole packer |
| 07/04/2012 | CN202300306U Oil pipe detecting and blanking plug |
| 07/04/2012 | CN202300305U 高效灌浆施工液压式栓塞 Efficient hydraulic grouting embolism |
| 07/04/2012 | CN202300304U 一种防倒流坐封球座 An anti-backflow packer tee |
| 07/04/2012 | CN202300303U 全平衡压缩式逐级解封封隔器 Progressively re-opened fully balanced compression packer |
| 07/04/2012 | CN202300302U 可洗井式逐级解封封隔器 Washable Pit progressively re-opened packer |
| 07/04/2012 | CN202300301U 一种压力平衡装置 A pressure balancing device |
| 07/04/2012 | CN202300300U 双向机械堵塞器 Bidirectional mechanical blanking plug |
| 07/04/2012 | CN202300299U 双向液压堵塞器 Bidirectional hydraulic blanking plug |
| 07/04/2012 | CN202300298U 双封连体防喷器 Siamese twin seal BOP |
| 07/04/2012 | CN202300297U 一种防喷器组固定底座 One kind BOP stack fixed base |
| 07/04/2012 | CN202300296U 一种双胶筒式环形防喷器 One kind of twisted barrel annular BOP |
| 07/04/2012 | CN202300295U 修井井喷控制装置 Workover blowout control device |
| 07/04/2012 | CN202300294U 油井抢喷装置 Well grab a spray device |
| 07/04/2012 | CN202300293U 强制润滑防喷盒 Forced lubrication BOP box |
| 07/04/2012 | CN202300292U 四翼式多功能闸板防喷器 Four Wings multifunction ram BOP |
| 07/04/2012 | CN202300291U 一种注汽井干度测试防喷器 An injection of the test well is dry steam blowout preventer |
| 07/04/2012 | CN202300290U 一种电潜泵热采井口装置 An electrical submersible pump thermal recovery wellhead |
| 07/04/2012 | CN202300289U 抽油井光杆密封器 Sealer rod pumping wells |
| 07/04/2012 | CN202300288U 一种井口装置 One kind of wellhead |
| 07/04/2012 | CN202300287U 防喷盒防撞加力杆 BOP box collision afterburner rod |
| 07/04/2012 | CN202300286U 油田采油防偏磨井口装置 Oilfield wellhead wear anti-migraine |
| 07/04/2012 | CN202300285U 油田井口快速更换盘根盒装置 Oilfield wellhead rapid replacement packing box device |
| 07/04/2012 | CN202300284U 一种取压封堵器 One kind of take pressure occluder |