| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 10/05/2011 | EP2370720A1 Trenchless ducting apparatus frame |
| 10/05/2011 | EP2370666A1 Sub-sea chemical injection metering valve |
| 10/05/2011 | EP2370663A2 Particulate bridging agents used for forming and breaking filtercakes on wellbores |
| 10/05/2011 | EP2370541A1 Sealing of thief zones |
| 10/05/2011 | CN202003481U Three-position four-way rotary valve shearing alarm for blowout preventer control device |
| 10/05/2011 | CN202000959U Sliding sleeve type fracturing packer |
| 10/05/2011 | CN202000958U Compression washable well packer |
| 10/05/2011 | CN202000957U Steam injection packer |
| 10/05/2011 | CN202000956U External casing packer |
| 10/05/2011 | CN202000955U High pressure resistant packer in horizontal well for reservoir reconstruction |
| 10/05/2011 | CN202000954U Fisher for fallen article in drill hole |
| 10/05/2011 | CN202000953U Splashing prevention cap for crude oil sampler |
| 10/05/2011 | CN202000952U Blowout preventer for pump inspection of non-pressure well |
| 10/05/2011 | CN202000951U Spring type flashboard locking mechanism |
| 10/05/2011 | CN202000950U Clip-type protector |
| 10/05/2011 | CN202000949U Well head blocking device |
| 10/05/2011 | CN202000948U Leakage type pipeline hanging device |
| 10/05/2011 | CN202000947U Energy-saving packing box |
| 10/05/2011 | CN202000946U Novel wellhead double-seal box |
| 10/05/2011 | CN202000945U Slurry check ring for rotary control head |
| 10/05/2011 | CN202000936U Special tool for adding and replacing packing |
| 10/05/2011 | CN102209833A Disposal of well control fluids |
| 10/05/2011 | CN102206994A Remote control technique for dual-redundancy electric-gas-liquid controlled blowout preventing systems |
| 10/05/2011 | CN102206993A Interference type well pressure seal-supporting floating seal blowout preventer |
| 10/05/2011 | CN101644149B Integral type level oil extraction wellhead equipment |
| 10/05/2011 | CN101625026B Resilient high pressure metal-to-metal seal and method |
| 10/05/2011 | CN101109277B Buoyant device used for blowout preventer in deepwater drilling water |
| 10/04/2011 | US8030389 Includes viscosifier system comprised of clay and free radical copolymer having sulfonate moiety; maintains homogeneous when exposed to water and temperature differentials; arctic geothermal well bore drilling |
| 10/04/2011 | US8028756 Method for curing an inflatable packer |
| 10/04/2011 | US8028755 Quick lock wireline valve/blow-out preventor and methods for making and using same |
| 10/04/2011 | US8028752 Plug setting and retrieving apparatus |
| 10/04/2011 | US8028750 Force balanced rotating pressure control device |
| 10/04/2011 | CA2614809C System and method for dynamic sealing around a drill stem |
| 10/04/2011 | CA2542964C Instrumented internal blowout preventer valve for measuring drill string drilling parameters |
| 09/30/2011 | CA2735753A1 Fluid system component with sacrificial element |
| 09/29/2011 | WO2011119728A2 System, assembly and method for port control |
| 09/29/2011 | WO2011119156A1 Bi-directional flapper/sealing mechanism and technique |
| 09/29/2011 | WO2011117606A2 Downhole tool and method |
| 09/29/2011 | WO2011117576A2 Laminar phase ring for fluid transport applications |
| 09/29/2011 | WO2011079265A3 High expansion metallic seal |
| 09/29/2011 | WO2011048213A3 Pressure intensifier system for subsea running tools |
| 09/29/2011 | WO2011044339A3 Reinforced elastomers |
| 09/29/2011 | US20110232923 Method and apparatus for dropping a pump down plug or ball |
| 09/29/2011 | US20110232920 Full Bore System Without Stop Shoulder |
| 09/29/2011 | US20110232919 Top drive casing system |
| 09/29/2011 | US20110232899 Composite reconfigurable tool |
| 09/29/2011 | US20110232898 Engaging device |
| 09/29/2011 | US20110232896 Stuffing box leak containment apparatus |
| 09/29/2011 | CA2794111A1 System, assembly and method for port control |
| 09/29/2011 | CA2793343A1 Downhole tool and method |
| 09/29/2011 | CA2791420A1 Methods and compositions for sand control in injection wells |
| 09/28/2011 | EP2369128A1 Rotating control device docking station |
| 09/28/2011 | EP2368010A1 Plug device and method of using same |
| 09/28/2011 | CN201991523U 水泥头磁感应胶塞指示器 Cement head magnetic induction stopper indicator |
| 09/28/2011 | CN201991484U Hydraulic packer |
| 09/28/2011 | CN201991483U 适用于封隔器分层加砂压裂的管柱结构 String structure suitable for packer stratified sand fracturing of |
| 09/28/2011 | CN201991482U 多级井专用封隔器 Multilevel wells dedicated packer |
| 09/28/2011 | CN201991481U 注水井低力解封封隔器 Low power injection wells unseal packer |
| 09/28/2011 | CN201991480U 高压柱塞泵刺水安全防护罩 High pressure piston pump water security guard stabbed |
| 09/28/2011 | CN201991479U 修井备用井控井口 Alternate wellhead workover well control |
| 09/28/2011 | CN201991478U 一种组合式采油树 A modular Christmas tree |
| 09/28/2011 | CN201991477U 一种节能型随动式盘根盒 An energy-saving servo type packing boxes |
| 09/28/2011 | CN201991476U 一种双管柱悬挂井口装置 A dual string hanging wellhead |
| 09/28/2011 | CN201991475U 一种井下不压井作业设备 A downhole snubbing unit |
| 09/28/2011 | CN201991472U 尾管悬挂器抗回流结构 Anti-reflux liner hanger structure |
| 09/28/2011 | CN102203376A Pressure relieving transition joint |
| 09/28/2011 | CN102203373A Method and apparatus for fusion drilling |
| 09/28/2011 | CN102200024A Gas extraction center divided-flow type grouting and hole sealing device and hole sealing method |
| 09/28/2011 | CN102200002A method and device for sealing upward hole at high pressure by sections |
| 09/28/2011 | CN102200001A Bidirectional anchor packer |
| 09/28/2011 | CN102200000A Blowout preventing box of continuous oil pipe and drill rod |
| 09/27/2011 | US8025104 Method and apparatus for delayed flow or pressure change in wells |
| 09/27/2011 | US8025103 Contained top kill method and apparatus for entombing a defective blowout preventer (BOP) stack to stop an oil and/or gas spill |
| 09/27/2011 | US8025102 Wellbore delivery apparatus |
| 09/27/2011 | CA2623057C In-situ solidification of invert emulsion fluids to form gas tight annular barrier |
| 09/27/2011 | CA2618693C Convertible seal |
| 09/24/2011 | CA2842765A1 Composite reconfigurable tool |
| 09/24/2011 | CA2734372A1 Composite reconfigurable tool |
| 09/22/2011 | WO2011115805A2 Packer deployed formation sensor |
| 09/22/2011 | WO2011115710A2 Well assembly with a composite fiber sleeve for an opening |
| 09/22/2011 | WO2011115494A1 Flow control device and flow control method |
| 09/22/2011 | WO2011113845A2 Subsea well intervention module |
| 09/22/2011 | WO2011113449A1 Control and supply unit |
| 09/22/2011 | WO2011113448A1 Control and supply unit |
| 09/22/2011 | WO2011113096A1 Surface casing unit |
| 09/22/2011 | WO2011061502A3 Swellable connection system and method of using the same |
| 09/22/2011 | US20110226490 Method and system for one-trip hanger installation |
| 09/22/2011 | US20110226487 Positive locked slim hole suspension and sealing system with single trip deployment and retrievable tool |
| 09/22/2011 | US20110226483 Apparatus and method for recovering fluids from a well and/or injecting fluids into a well |
| 09/22/2011 | US20110226481 Apparatus and Method for Controlling Fluid Flow Between Formations and Wellbores |
| 09/22/2011 | US20110226478 Wellbore Plug and Method |
| 09/22/2011 | US20110226476 Tubular severing system and method of using same |
| 09/22/2011 | US20110226475 System and method for severing a tubular |
| 09/22/2011 | US20110226464 Well head lubricator assembly |
| 09/22/2011 | CA2793722A1 Flow control device and flow control method |
| 09/22/2011 | CA2793272A1 Subsea well intervention module |
| 09/22/2011 | CA2792999A1 Well assembly with a composite fiber sleeve for an opening |
| 09/22/2011 | CA2707265A1 Tubing string hanger and tensioner assembly |
| 09/21/2011 | EP2366866A1 Subsea well intervention module |
| 09/21/2011 | CN201982062U 圆筒式油井玻璃钢保温罩 Cylindrical oil fiberglass insulation cover |