| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
|---|
| 04/27/2011 | CN201810253U Downhole oil-producing tool releaser |
| 04/27/2011 | CN201810252U Christmas tree stuffing box protective covers |
| 04/27/2011 | CN201810251U Downhole tool anti-drop baffle disk |
| 04/27/2011 | CN201810241U Casing head installation device |
| 04/27/2011 | CN201810218U Capsule type rotating self-sealing rubber core |
| 04/27/2011 | CN102037210A Using nanoparticles for water flow control in subterranean formations |
| 04/27/2011 | CN102031947A Back wash pump negative-pressure oil extraction device |
| 04/27/2011 | CN102031942A On-site construction process of water base barite liquid plugging agent with heat sensitive characteristic |
| 04/27/2011 | CN102031941A Steel protection umbrella type sealer |
| 04/27/2011 | CN102030498A Two-component mortar composition and its use |
| 04/26/2011 | US7931093 Method and system for anchoring and isolating a wellbore |
| 04/26/2011 | US7931092 Packer element with recesses for downwell packing system and method of its use |
| 04/26/2011 | US7931078 Stuffing box apparatus |
| 04/26/2011 | CA2699283C Stripper rubber with integral retracting retention member connection apparatus |
| 04/26/2011 | CA2697695C Bearing assembly retaining apparatus and well drilling equipment comprising same |
| 04/26/2011 | CA2697694C Spring preloaded bearing assembly and well drilling equipment comprising same |
| 04/26/2011 | CA2697667C Bearing assembly inner barrel and well drilling equipment comprising same |
| 04/26/2011 | CA2697620C Breech lock stripper rubber pot mounting structure and well drilling equipment comprising same |
| 04/26/2011 | CA2697478C Tapered bearing assembly cover plate and well drilling equipment comprising same |
| 04/26/2011 | CA2697476C Bearing assembly system with integral lubricant distribution and well drilling equipment comprising same |
| 04/26/2011 | CA2697063C Stripper rubber retracting connection system |
| 04/26/2011 | CA2697061C Stripper rubber pot mounting structure and well drilling equipment comprising same |
| 04/26/2011 | CA2697039C Spring load seal assembly and well drilling equipment comprising same |
| 04/26/2011 | CA2696904C Tapered surface bearing assembly and well drilling equipment comprising same |
| 04/26/2011 | CA2696061C Reinforced stripper rubber body and method of making same |
| 04/26/2011 | CA2657283C Method for removing a sealing plug from a well |
| 04/26/2011 | CA2624368C Pressure isolation plug for horizontal wellbore and associated methods |
| 04/26/2011 | CA2597565C One trip cemented expandable monobore liner system and method |
| 04/26/2011 | CA2566414C Improved flexible cup for downhole devices |
| 04/26/2011 | CA2475359C Methods of discovering and correcting subterranean formation integrity problems during drilling |
| 04/26/2011 | CA2415437C Oil well stuffing box packing |
| 04/21/2011 | WO2011005836A3 Methods for treating a wellbore |
| 04/21/2011 | WO2011005107A3 A down hole well tool provided with a piston |
| 04/21/2011 | WO2010148316A3 Dual anchoring tubular back-off tool |
| 04/21/2011 | WO2010131010A3 Subsea winch |
| 04/21/2011 | WO2009105554A3 Production and delivery of a fluid mixture to an annular volume of a wellbore |
| 04/21/2011 | US20110088916 Method for sealing an annular space in a wellbore |
| 04/21/2011 | US20110088915 Bottom Hole Assembly for Subterranean Operations |
| 04/21/2011 | US20110088901 Method for Plugging Wells |
| 04/21/2011 | US20110088892 Packer-anchoring device |
| 04/21/2011 | US20110088891 Ultra-short slip and packing element system |
| 04/20/2011 | EP2312119A1 An annular barrier |
| 04/20/2011 | EP2312118A2 Self Sealing Hydraulic Coupler |
| 04/20/2011 | EP2312117A2 Electrical mudline system |
| 04/20/2011 | EP2312116A2 Casing hanger nesting indicator |
| 04/20/2011 | EP2310767A2 Enhanced geothermal systems and reservoir optimization |
| 04/20/2011 | EP2310623A1 Wellbore fluid treatment process and installation |
| 04/20/2011 | EP2310622A1 Arrangement for directing a fluid flow |
| 04/20/2011 | EP1093540B1 Method and multi-purpose apparatus for control of fluid in wellbore casing |
| 04/20/2011 | CN201802352U Well mouth anti-backflow nozzle tip of flowing well |
| 04/20/2011 | CN201802350U Multifunctional cementing device |
| 04/20/2011 | CN201802349U Spraying guiding pipe inserting and surface direct-drilling device for ocean deepwater drilling |
| 04/20/2011 | CN201802348U Removable internal oil tube stopper |
| 04/20/2011 | CN201802347U Lifting type packing removal mechanism of packer |
| 04/20/2011 | CN201802346U Blowout control fluid-shade cover of pipe tongs |
| 04/20/2011 | CN201802345U Constant pressure hydraulic pipe extractor |
| 04/20/2011 | CN201802344U High temperature resistant double-tube working blowout preventer |
| 04/20/2011 | CN201802343U Double-sealed high pressure valve for well head |
| 04/20/2011 | CN201802342U Conical sealing plug for cut-off device of oil and gas extraction well |
| 04/20/2011 | CN201802341U Portable high pressure water injection wellhead |
| 04/20/2011 | CN201802340U Packing oil guider at opening of rod-pumped well |
| 04/20/2011 | CN201802339U Horizontal steam injection well head sealing device |
| 04/20/2011 | CN201802338U Dual-string oil production wellhead device for branch horizontal well |
| 04/20/2011 | CN201802337U Energy-saving pumping well head sealer |
| 04/20/2011 | CN201802332U Clamping nail setting device |
| 04/20/2011 | CN102027189A Wellbore anchor and isolation system |
| 04/20/2011 | CN102022094A Ceaseless drilling mud circulation device and method |
| 04/20/2011 | CN102022093A Reactive type foamy hole sealing system |
| 04/20/2011 | CN102022092A Open hole packer and tapping tool used together with same |
| 04/20/2011 | CN101307695B Coal mine gas pre-draining borehole sealing method adopting aerated capsule as temporary hole bottom |
| 04/20/2011 | CN101144377B Oil well sucker rod pump oil pumping completion tubular pile plugging device with pressure |
| 04/19/2011 | US7928042 Composition and method for recovering hydrocarbon fluids from a subterranean reservoir |
| 04/19/2011 | US7926591 Aqueous-based emulsified consolidating agents suitable for use in drill-in applications |
| 04/19/2011 | US7926581 Well tool having enhanced packing element assembly |
| 04/19/2011 | US7926580 Coiled tubing multi-zone jet frac system |
| 04/19/2011 | US7926560 Solid rubber packer for a rotating control device |
| 04/19/2011 | US7926559 Oilfield stuffing box |
| 04/19/2011 | CA2770428A1 Multi-zone fracturing completion |
| 04/19/2011 | CA2730695A1 Multi-zone fracturing completion |
| 04/19/2011 | CA2514437C Process and system for drilling and lining a bore hole |
| 04/19/2011 | CA2502228C Self-destructing filter cake |
| 04/14/2011 | WO2011044339A2 Reinforced elastomers |
| 04/14/2011 | WO2011044223A1 Stage tool apparatus and method |
| 04/14/2011 | WO2011044070A2 Formation testing planning and monitoring |
| 04/14/2011 | WO2011042826A2 Method for treating well bore within a subterranean formation |
| 04/14/2011 | WO2011042685A1 Interchangeable drillable tool |
| 04/14/2011 | WO2011042492A1 An annular barrier |
| 04/14/2011 | WO2011007120A3 Methods for contacting a surface with a fluid containing a marker to determine the wettability of the surface |
| 04/14/2011 | US20110083861 Well tool including swellable material and integrated fluid for initiating swelling |
| 04/14/2011 | US20110083860 Sand control screen assembly with flow control capability |
| 04/14/2011 | CA2848449A1 Interchangeable drillable tool |
| 04/14/2011 | CA2776962A1 An annular barrier |
| 04/14/2011 | CA2776861A1 Method for treating well bore within a subterranean formation |
| 04/14/2011 | CA2776789A1 Interchangeable drillable tool |
| 04/13/2011 | EP2307664A1 Single packer system for use in a wellbore |
| 04/13/2011 | EP2307663A1 Apparatus for improving well safety and recovery and installation process thereof |
| 04/13/2011 | CN201794607U Bag for synthesizing mining polyurethane foam on the spot |
| 04/13/2011 | CN201794586U Well cementing wall packing channeling checking instrument |
| 04/13/2011 | CN201794552U Large-diameter fracturing packer |
| 04/13/2011 | CN201794551U Water injection packer with step-by-step deblocking |