| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 09/07/2011 | CN201963247U 旋转防喷器 Rotating BOP |
| 09/07/2011 | CN201963246U 防喷器顶部的集液引流盘 Set fluid drainage tray on top of the BOP |
| 09/07/2011 | CN201963245U 易装拆旋转防喷器 Easy assembly and disassembly rotating BOP |
| 09/07/2011 | CN201963244U 耐用旋转防喷器 Durable rotating BOP |
| 09/07/2011 | CN201963243U 智能式全自动抽油杆密封防喷器 Intelligent automatic rod seal BOP |
| 09/07/2011 | CN201963242U 卡齿式防喷器 Card Tooth BOP |
| 09/07/2011 | CN201963241U 旋启式井口密封器 Swing wellhead sealer |
| 09/07/2011 | CN201963240U Two-way adjustment sealer for polished rod of sucker rod |
| 09/07/2011 | CN201963239U 防套管液外溢自动关闭器 Anti-sleeve liquid spills close automatically |
| 09/07/2011 | CN201963238U 一种套管堵头 One kind of plug casing |
| 09/07/2011 | CN201963231U 一种实现无隔水管泥浆回收钻井的海底泥浆吸入系统 An implementation riserless subsea drilling mud slurry recycling inhalation system |
| 09/07/2011 | CN201963195U 一种用于旋塞阀的带压钻孔装置 Pressure drilling apparatus for cock |
| 09/07/2011 | CN102177308A Multiple activation-device launcher for a cementing head |
| 09/07/2011 | CN102174882A Medium-pressure gas collection technique based on cluster well |
| 09/07/2011 | CN102174881A Method for drilling holes and protecting walls by plastic expansion casing pipe and special expansion casing pipe |
| 09/07/2011 | CN101942982B Device for jetting conduit into directly-drilled surface layer of marine deep-water drilling well |
| 09/06/2011 | US8011446 Method and apparatus for a monodiameter wellbore, monodiameter casing, monobore, and/or monowell |
| 09/06/2011 | CA2458493C Sealing composition |
| 09/01/2011 | WO2011106366A2 Apparatus and method for cementing liner |
| 09/01/2011 | WO2011084529A3 Constant pressure open hole water packing system |
| 09/01/2011 | WO2010127457A8 Sliding sleeve sub and method and apparatus for wellbore fluid treatment |
| 09/01/2011 | US20110209881 Pressure-Activated Valve for Hybrid Coiled Tubing Jointed Tubing Tool String |
| 09/01/2011 | US20110209877 Apparatus for, and method of, landing items at a well location |
| 09/01/2011 | US20110209867 Mechanical Lock with Pressure Balanced Floating Piston |
| 09/01/2011 | CA2790881A1 Drilling system and method of operating a drilling system |
| 09/01/2011 | CA2790722A1 Apparatus and method for cementing liner |
| 08/31/2011 | EP2361698A1 Gas Well Connector and Method of using same |
| 08/31/2011 | EP2361341A1 Bi-directional wellhead seal |
| 08/31/2011 | EP2361340A1 Packer |
| 08/31/2011 | CN201953365U 井下注蒸汽密封隔热补偿一体装置 Downhole steam injection thermal compensation integral sealing means |
| 08/31/2011 | CN201953348U 固井用防转自锁胶塞 Cementing with anti-lock stopper switched |
| 08/31/2011 | CN201953347U 桥塞坐封管串长度伸缩补偿装置 Bridge plug packer telescopic pipe string length compensation device |
| 08/31/2011 | CN201953346U 压缩式逐级解封封隔器 Compression packer progressively re-opened |
| 08/31/2011 | CN201953345U 煤层气开采用钢缆密封器 CBM using rope sealer |
| 08/31/2011 | CN201953344U 多功能套管密封装置 Multifunctional sleeve sealing device |
| 08/31/2011 | CN201953343U 抽油机光杆密封总成 Pumping rod seal assembly |
| 08/31/2011 | CN201953342U 一种螺杆泵直接驱动装置专用防盗井口 One kind of special anti-theft screw direct drive wellhead |
| 08/31/2011 | CN201953341U 采油井口内嵌旋转套式丝堵 Wellhead embedded rotating sleeve type plugs |
| 08/31/2011 | CN201953340U 旋转测试树 Rotation test tree |
| 08/31/2011 | CN201953331U 一种新型尾管胶塞接头 A new tail pipe stopper fittings |
| 08/31/2011 | CN102171410A Dual tubing hanger |
| 08/31/2011 | CN102168547A Fault diagnosis system of deepwater blowout preventer unit based on wavelet neural network |
| 08/31/2011 | CN102168538A Method for pressurizing and filling upper part of shaft in well cementation later stage of underground gas storage well and device thereof |
| 08/31/2011 | CN102168537A Washable well type packer capable of unsealing by levels |
| 08/31/2011 | CN102168536A Underwater double-unlocking connector |
| 08/31/2011 | CN102168535A Pneumatic pressure joint-control device for ground blowout preventor capable of testing pressure |
| 08/30/2011 | US8006773 Swellable packer construction for continuous or segmented tubing |
| 08/30/2011 | US8006771 Methods for expanding tubular strings and isolating subterranean zones |
| 08/30/2011 | US8006765 Well servicing tool storage system for subsea well intervention |
| 08/30/2011 | US8006763 Method and system for installing subsea insulation |
| 08/30/2011 | US8006761 Wellbore fluid comprising a base fluid and a particulate bridging agent |
| 08/30/2011 | CA2662945C Swellable packer construction |
| 08/30/2011 | CA2518799C Reverse circulation cementing system and method |
| 08/30/2011 | CA2516542C Method for drilling and completing wells |
| 08/30/2011 | CA2484721C Tubing anchor |
| 08/26/2011 | CA2732708A1 Expandable structure for deployment in a well |
| 08/26/2011 | CA2732128A1 Drill string valve actuator with inflatable seals |
| 08/25/2011 | WO2011102877A1 Running tool with independent housing rotation sleeve |
| 08/25/2011 | US20110203809 Wellbore bypass tool and related methods of use |
| 08/25/2011 | US20110203802 Pressure control device with remote orientation relative to a rig |
| 08/25/2011 | US20110203796 Epoxy acid based biodegradable set retarder for a cement composition |
| 08/25/2011 | US20110203795 Sealant for forming durable plugs in wells and methods for completing or abandoning wells |
| 08/25/2011 | US20110203794 Apparatus and Method for Cementing Liner |
| 08/25/2011 | US20110203790 System and method for sealing couplings in downhole tubing strings |
| 08/25/2011 | US20110203789 Pressure equalising devices |
| 08/24/2011 | EP2359048A1 Sealing method and apparatus |
| 08/24/2011 | EP2358973A2 Methods for minimizing fluid loss to and determining the locations of lost circulation zones |
| 08/24/2011 | CN201946940U 一种密封油管头穿孔及穿过所述穿孔的部分电缆的装置 A sealed perforated tubing head and through the perforated portion of the cable means |
| 08/24/2011 | CN201943678U 油田三管分注装置 Oilfield three dispensing apparatus |
| 08/24/2011 | CN201943677U 聚驱水驱双功能外调堵塞器 Bifunctional polymer flooding water flooding redeployment clogged filter |
| 08/24/2011 | CN201943652U 一种用塑料膨胀套管进行钻孔护壁的专用膨胀套管 Wall drilling a dedicated expansion sleeve with a plastic expansion sleeve |
| 08/24/2011 | CN201943651U 封隔器井下压缩式封隔器机械参量测试装置 Downhole packer packer mechanical compression testing device parameters |
| 08/24/2011 | CN201943650U 注水井可洗井长胶筒封隔器 Injection wells can be washed well long plastic tube packer |
| 08/24/2011 | CN201943649U 高压压裂长胶筒封隔器 High pressure fracturing long plastic tube packer |
| 08/24/2011 | CN201943648U 一种气井回接固井用暂堵装置 One kind of gas tieback cementing temporary blocking device |
| 08/24/2011 | CN201943647U 油井取样防喷器 Well sampling BOP |
| 08/24/2011 | CN201943646U 一种油井双级防喷工具 One kind of two-stage oil well blowout Tools |
| 08/24/2011 | CN201943645U 一种套管头 One kind of casing head |
| 08/24/2011 | CN201943644U 气井套管螺纹密封装置 Gas well casing thread sealing device |
| 08/24/2011 | CN201943643U 压环式简易套管头 Easy casing head pressure ring |
| 08/24/2011 | CN201943642U 盘根侧取光杆密封器 Packing light extraction side bar sealer |
| 08/24/2011 | CN201943641U 欠平衡钻井旋转控制装置的密封体 Under-balanced drilling rotary seal control device |
| 08/24/2011 | CN201943640U 自调压全功能光杆密封器 Since the regulator fully functional light bar sealer |
| 08/24/2011 | CN201943639U 压力式抽油井光杆密封器 Pressure sealer rod pumping wells |
| 08/24/2011 | CN201943638U 一种油井抽油杆密封器 One kind of oil well sucker rod sealer |
| 08/24/2011 | CN201943637U 防喷盘根盒 BOP packing boxes |
| 08/24/2011 | CN201943636U 一种采油井口 One kind of wellhead |
| 08/24/2011 | CN201943635U 采油井口套管防盗装置 Wellhead casing anti-theft device |
| 08/24/2011 | CN201943634U 气井顶丝机械密封器 Gas top wire mechanical seal device |
| 08/24/2011 | CN201943633U 气井大四通顶丝堵漏装置 Gas Big Stone top wire plugging device |
| 08/24/2011 | CN201943632U 气井阀门密封装置 Gas valve sealing device |
| 08/24/2011 | CN201943631U 多功能抽油杆密封器 Multifunction rod sealer |
| 08/24/2011 | CN201943616U 盘根起出器 Packing from a reader |
| 08/24/2011 | CN102162346A Quick assembling and disassembling heat-preserving device for christmas tree |
| 08/24/2011 | CN102162344A Blowout prevention box for pumping steel wire rope |
| 08/24/2011 | CN101289931B Oil well production increasing environment-friendly device |
| 08/23/2011 | US8003580 Consolidated proppants having high mechanical strength and process for the preparation thereof |
| 08/23/2011 | US8003579 Oil-, hot water-and heat-resistant binders, process for preparing them and their use |
| 08/23/2011 | US8002889 Dual function cement additive |
| 08/23/2011 | US8002049 Well treating method to prevent or cure lost-circulation |