| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 08/12/2010 | US20100200213 Force Balanced Rotating Pressure Control Device |
| 08/12/2010 | DE202010007411U1 Pressverschluß für Bohrloch Press shutter for borehole |
| 08/12/2010 | CA2751486A1 Landing string assembly |
| 08/12/2010 | CA2749972A1 Arrangement for a down-the-hole hammer drill for use in soil consolidation through jet grouting |
| 08/11/2010 | EP2216503A1 Apparatus and method for recovering fluids from a well and/or injecting fluids into a well |
| 08/11/2010 | EP2216502A1 Apparatus and method for recovering fluids from a well and/or injecting fluids into a well |
| 08/11/2010 | EP2216499A2 Bidirectional ram bop and method |
| 08/11/2010 | EP2216498A2 Latch position indicator system and method |
| 08/11/2010 | EP2215326A1 Improved seal element |
| 08/11/2010 | CN201546707U Downhole tool automatic pressure test device |
| 08/11/2010 | CN201546676U Wellhead area antiicer |
| 08/11/2010 | CN201546672U Preset underground high pressure throttle |
| 08/11/2010 | CN201546668U Hydraulic oil pipe bridging plug |
| 08/11/2010 | CN201546667U Multifunctional oil-pipe bridge plug |
| 08/11/2010 | CN201546666U Novel motor-driven blocked bridge plug of natural gas well |
| 08/11/2010 | CN201546665U Recyclable bridge plug |
| 08/11/2010 | CN201546664U Novel anti-jacking packer |
| 08/11/2010 | CN201546663U Efficient water injection packer for washable well |
| 08/11/2010 | CN201546662U Rear-mounted underground throttler |
| 08/11/2010 | CN201546661U Constant-pressure controller of excluder |
| 08/11/2010 | CN201546660U Cable wellhead protection device |
| 08/11/2010 | CN201546659U Improved oil well stream-injection blowout control equipment |
| 08/11/2010 | CN201546658U Steam injection wellhead blowout preventer |
| 08/11/2010 | CN201546657U Polished rod break-off blowout preventer |
| 08/11/2010 | CN201546656U Packing box oil-stealing prevention device |
| 08/11/2010 | CN201546655U Two-stage sealer |
| 08/11/2010 | CN101798500A Plugging agent with double plugging function and filling method thereof |
| 08/11/2010 | CN101161982B Hydraulic buckling type tail pipe hanger |
| 08/11/2010 | CN101161981B Hydraulic mechanical double-action buckling type tail pipe hanger |
| 08/10/2010 | US7772328 acrylonitrile-butadiene copolymers optionally copolymerized with ethylene or hexene, having a narrow molecular weight distribution, used as shaped articles such as seals, hoses, bearing pads, stators, valve plates, cable sheaths, wheels, rolls or pipe seals |
| 08/10/2010 | US7772166 Conductive cement formulation and application for use in well |
| 08/10/2010 | US7770653 Wellbore bypass method and apparatus |
| 08/10/2010 | US7770637 Bypass gas lift system and method for producing a well |
| 08/10/2010 | US7770636 Groundwater collecting apparatus |
| 08/10/2010 | CA2532793C Top drive swivel apparatus and method |
| 08/10/2010 | CA2413244C Downhole tubular patch, tubular expander and method |
| 08/10/2010 | CA2346169C Cementing compositions and the use of such compositions for cementing oil wells or the like |
| 08/06/2010 | CA2692209A1 Latch position indicator system and method |
| 08/06/2010 | CA2691288A1 System and method for controlling fluid injection in a well |
| 08/05/2010 | WO2010088037A2 Method and system for one-trip hanger installation |
| 08/05/2010 | WO2010088024A1 Method and system for temporarily locking a tubular |
| 08/05/2010 | WO2010051165A9 Elastic hollow particles for annular pressure buildup mitigation |
| 08/05/2010 | US20100194049 Multi-elastomer seal |
| 08/05/2010 | US20100193200 Downhole pressure barrier and method for communication lines |
| 08/05/2010 | US20100193195 Seal system and method |
| 08/05/2010 | US20100193191 Methods and Compositions Comprising a Dual Oil/Water-Swellable Particle |
| 08/05/2010 | US20100193190 In-Situ Zonal Isolation for Sand Controlled Wells |
| 08/05/2010 | US20100193178 Wellhead isolation tool and wellhead assembly incorporating the same |
| 08/04/2010 | EP2213831A2 Method and apparatus for measuring a parameter within the well of a plug |
| 08/04/2010 | EP2213830A2 Method and apparatus for measuring a parameter within the well with a plug |
| 08/04/2010 | CN201539249U Special-purpose lower sheave for downhole testing |
| 08/04/2010 | CN201539244U Well-completion separate-layer fracturing tool assembly |
| 08/04/2010 | CN201539230U A hand-hydraulic grouting device |
| 08/04/2010 | CN201539229U Preset type oil-pipe blanking plug with snubbing service |
| 08/04/2010 | CN201539228U self-sealing packer |
| 08/04/2010 | CN201539227U Combined annular blowout preventer |
| 08/04/2010 | CN201539226U Plug for wellhead paraffin removal |
| 08/04/2010 | CN201539225U Self-locating three stage sealing type polish rod sealing device |
| 08/04/2010 | CN201539224U Versatile polished rod sealing device of life cycle seal packing |
| 08/04/2010 | CN101793146A Method for testing strata of horizontal well |
| 08/04/2010 | CN101793134A Fiber batch feeder for well cementation of oil field |
| 08/04/2010 | CN101793133A Orientation method of sealing tool of multilateral well window |
| 08/04/2010 | CN101793132A Rechargeable subsea force generating device and method |
| 08/04/2010 | CN101793128A Blowout preventing tubing anchor |
| 08/03/2010 | US7769260 Intervention rod |
| 08/03/2010 | US7766099 using the drilling composition to drill a portion of the well bore, the consolidating material penetrating into the walls of the well bore, and consolidating a portion of the formation particulates;.crosslinking polymers bonding only at the points of contact between particles and not sealing across |
| 08/03/2010 | US7766089 Packer system and method |
| 08/03/2010 | CA2618874C Blowout preventer having modified hydraulic operator |
| 08/03/2010 | CA2596580C System and apparatus for sealing a fracturing head to a wellhead |
| 08/03/2010 | CA2590984C Method and apparatus for sealing a tubular throughbore |
| 08/03/2010 | CA2528677C Compositions and methods for consolidating unconsolidated subterranean formations |
| 08/03/2010 | CA2478077C Lightweight well cement compositions and methods |
| 07/29/2010 | WO2010085617A1 Method and apparatus for performing cementing operations |
| 07/29/2010 | WO2010084369A1 Method for extracting viscous petroleum crude from a reservoir |
| 07/29/2010 | WO2010084353A2 Apparatus and method |
| 07/29/2010 | WO2010083803A2 Apparatus for a pipe string of a geological drill hole, pipe string, method for operating a geological drilling gear and method for producing a pipe string for a geological drill hole |
| 07/29/2010 | WO2010037518A8 Method and device for fusion drilling |
| 07/29/2010 | US20100187763 Sealing device |
| 07/29/2010 | US20100186970 Support assembly |
| 07/29/2010 | US20100186967 Assembly for Controlled Delivery of Downhole Treatment Fluid |
| 07/29/2010 | US20100186956 Methods for Servicing Well Bores with Hardenable Resin Compositions |
| 07/29/2010 | US20100186955 Method of well cementing |
| 07/29/2010 | US20100186954 Methods for controlling water and particulate production in subterranean wells |
| 07/29/2010 | US20100186949 Assembly for Controlled Delivery of Downhole Treatment Fluid |
| 07/29/2010 | US20100186947 Retractable Downhole Backup Assembly for Circumferential Seal Support |
| 07/29/2010 | US20100186946 Bearing assembly retaining apparatus and well drilling equipment comprising same |
| 07/29/2010 | CA2748980A1 Method for extracting viscous petroleum crude from a reservoir |
| 07/28/2010 | EP2211015A2 Connection device |
| 07/28/2010 | CN201535147U 调偏式抽油机井口盘根盒 Detuning pumping unit wellhead packing boxes |
| 07/28/2010 | CN201535146U 直驱螺杆泵井口密封装置 Direct drive screw wellhead seal |
| 07/28/2010 | CN201535145U 气井井口防盗器 Wellhead gas alarm |
| 07/28/2010 | CN201535144U 钢丝绳井口密封装置 Rope wellhead seal |
| 07/28/2010 | CN1936269B Three-layer water-searching pipe column for oil-pumping well in oil field and water-searching method |
| 07/28/2010 | CN101787865A Midway setting-proof permanent packer |
| 07/28/2010 | CN101787864A Method for plugging water from oil reservoir fractured water logging oil well developed by injecting water into low-permeable reservoir stratum |
| 07/28/2010 | CN101787863A Expansion airtight-type water swelling packer |
| 07/28/2010 | CN101787854A Subsection well completion system of bottom water reservoir horizontal well |
| 07/28/2010 | CN101787268A Gel profile control agent for delaying generation of precipitation granules and preparation method thereof |
| 07/27/2010 | US7763572 Compositions comprising quaternary material and sorel cements |
| 07/27/2010 | US7762344 Swellable packer construction for continuous or segmented tubing |