| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 02/05/2013 | US8365829 Tubular seat and tubular actuating system |
| 02/05/2013 | US8365819 Method of redistributing well bore fluid |
| 02/05/2013 | US8365817 Stuffing box leak containment apparatus |
| 02/05/2013 | CA2664979C Method and apparatus for anchoring downhole tools in a wellbore |
| 01/31/2013 | WO2013016097A2 System and method for production of reservoir fluids |
| 01/31/2013 | WO2013015785A1 Friction reduction device for drill pipe |
| 01/31/2013 | WO2011135021A3 Electronic combined load weak link |
| 01/31/2013 | US20130026395 Blowout preventer |
| 01/31/2013 | US20130026394 Lock Mechanism for Blowout Preventer and Method |
| 01/31/2013 | US20130025887 Degradable layer for temporarily protecting a seal |
| 01/31/2013 | US20130025886 Shock Tolerant Heat Dissipating Electronics Package |
| 01/31/2013 | US20130025879 High pressure seal adapter for splitter conductor housing to wellhead connection |
| 01/31/2013 | US20130025863 Methods for Servicing Subterranean Wells |
| 01/31/2013 | US20130025850 Method of drilling and running casing in large diameter wellbore |
| 01/31/2013 | US20130025849 Actuated packer arrangement having a degradable layer for a seal |
| 01/31/2013 | US20130025848 Wellhead assembly having a nested tubing head |
| 01/31/2013 | US20130025689 Secondary Activation of Packer and Method |
| 01/31/2013 | DE102011107822B4 Verschlussvorrichtung für einen defekten Blowout-Preventer Closure device for a defective blowout preventer |
| 01/31/2013 | CA2843269A1 Friction reduction device for drill pipe |
| 01/31/2013 | CA2842545A1 Landing string |
| 01/31/2013 | CA2842541A1 Ball valve |
| 01/31/2013 | CA2842045A1 System and method for production of reservoir fluids |
| 01/30/2013 | EP2551443A2 Optimised method for treating a well against the inflow of sand |
| 01/30/2013 | CN202707018U Bridge type eccentric overflowing water distributor and blanking plug thereof |
| 01/30/2013 | CN202706985U Hydraulic machinery integrated bridge plug |
| 01/30/2013 | CN202706984U Insertion pipe bridge plug of fast change layer |
| 01/30/2013 | CN202706983U Self-filling type collision pressure assembly |
| 01/30/2013 | CN202706982U Oil filed well pipeline reinforcing and supporting device |
| 01/30/2013 | CN202706981U Step-by-step setting packer |
| 01/30/2013 | CN202706980U Hydraulic sealing wirerope device |
| 01/30/2013 | CN202706979U Blowout processing device of geothermal system |
| 01/30/2013 | CN202706978U Multistage casing head |
| 01/30/2013 | CN202706977U Long-term packing box of rod pumped well |
| 01/30/2013 | CN202706976U Self-regulation polish rod sealer |
| 01/30/2013 | CN202706975U High-temperature high-pressure wellhead deviation-adjusting seal device |
| 01/30/2013 | CN202706974U Anti-wear device of sucker rod tube |
| 01/30/2013 | CN202706973U Long-acting energy-saving packing box |
| 01/30/2013 | CN202706965U Transporting device of oil drilling blowout preventer |
| 01/30/2013 | CN202706964U Tool for replacing packing |
| 01/30/2013 | CN102900446A Step-by-step strengthening method by anchoring and forming hole in downward sleeve of cracking medium |
| 01/30/2013 | CN102900396A Method for integrally sealing and separating gas extraction drilled hole in coal seam |
| 01/30/2013 | CN102900395A Hydraulic packer |
| 01/30/2013 | CN102900394A Packer capable of washing well and examining seal |
| 01/30/2013 | CN102900393A Backpressure control type anti-jacking and blowout-preventing device |
| 01/30/2013 | CN102900392A Controllable pumping-well blowout preventer |
| 01/30/2013 | CN102900385A Over chuck distance steel wire operation slip plug |
| 01/30/2013 | CN102900381A Full hydraulic energy-saving snubbing aggregate unit |
| 01/30/2013 | CN102145989B Corrosion resistant cement system and application thereof |
| 01/30/2013 | CN102003163B Well mouth eccentric pressurizing sleeve oil recycling mobile device of production well |
| 01/30/2013 | CN101749005B Protection process of underground drilling hole |
| 01/29/2013 | US8360751 Discharge pressure actuated pump |
| 01/29/2013 | US8360161 Downhole device actuator and method |
| 01/29/2013 | US8360151 Methods for mitigation of annular pressure buildup in subterranean wells |
| 01/29/2013 | US8360150 Cement composition containing a substituted ethoxylated phenol surfactant for use in an oil-contaminated well |
| 01/29/2013 | US8360141 Launching tool with interlock system for downhole cement plug and method |
| 01/29/2013 | US8360140 Well head lubricator assembly |
| 01/29/2013 | CA2747576A1 Wellhead assembly having a nested tubing head |
| 01/29/2013 | CA2741238C Swellable packer anchors |
| 01/29/2013 | CA2690439C Cementitious compositions having coarse ground blast furnace slag and methods of making and using the same |
| 01/29/2013 | CA2523472C Well treating method to prevent or cure lost-circulation |
| 01/24/2013 | WO2013013147A2 High pressure tie back receptacle and seal assembly |
| 01/24/2013 | WO2013012931A2 Apparatus and method of zonal isolation |
| 01/24/2013 | WO2013010777A1 Intervention blowout preventer and well intervention tool |
| 01/24/2013 | WO2013010563A1 Energy and data distribution system |
| 01/24/2013 | WO2012148993A3 Subsea dispersant injection systems and methods |
| 01/24/2013 | WO2012115892A3 Open hole expandable packer with extended reach feature |
| 01/24/2013 | WO2012094117A3 Subsea safety system having a protective frangible liner and method of operating same |
| 01/24/2013 | WO2012007556A3 Process for backfilling a borehole and arrangement therefor |
| 01/24/2013 | WO2011151650A3 Well intervention and control method and apparatus |
| 01/24/2013 | WO2011104554A3 Clamping arrangement |
| 01/24/2013 | US20130020799 Bi-Directional Pressure Energized Axial Seal and a Swivel Connection Application |
| 01/24/2013 | US20130020097 Downhole fluid-flow communication technique |
| 01/24/2013 | US20130020087 Riser section connector with flanges and external locking ring |
| 01/24/2013 | US20130020086 Systems and methods for capping a subsea well |
| 01/24/2013 | US20130020083 Invert emulsion drilling fluid containing a hygroscopic liquid and a polymeric suspending agent |
| 01/24/2013 | US20130020071 Frangible slip for downhole tools |
| 01/24/2013 | US20130020065 Downhole Smart Control System |
| 01/24/2013 | CA2842065A1 Apparatus and method of zonal isolation |
| 01/24/2013 | CA2840464A1 Intervention blowout preventer and well intervention tool |
| 01/23/2013 | EP2547860A2 Well assembly with a composite fiber sleeve for an opening |
| 01/23/2013 | EP2547859A2 Subsea well intervention module |
| 01/23/2013 | CN202690037U Pressure testing device for well control and wellhead equipment |
| 01/23/2013 | CN202690006U Self-sealing well cementing rubber plug assembly device |
| 01/23/2013 | CN202690005U Expanded secondary quick pressure hole sealing device |
| 01/23/2013 | CN202690004U Sealing device for forming sand blasting holes of horizontal well by using continuous oil pipe |
| 01/23/2013 | CN202690003U Gas well swabbing ball type damper |
| 01/23/2013 | CN202690002U Drillable hydrocyclone blanking plug |
| 01/23/2013 | CN202690001U Oil well hot washing pollution-free release packer |
| 01/23/2013 | CN202690000U Packing sliding-sleeve type inserting and anchoring seal for layer-by-layer filling |
| 01/23/2013 | CN202689999U Mandrel-type injection molded casing head |
| 01/23/2013 | CN202689998U Wellhead sealing structure |
| 01/23/2013 | CN202689997U Anti-theft device of sampling valve of oil well |
| 01/23/2013 | CN202689996U Wellhead sealer |
| 01/23/2013 | CN202689995U Hydraulic bridge type oil-fishing wellhead sealer |
| 01/23/2013 | CN202689994U Wear-resistant and anticorrosive sealing packing for oil production |
| 01/23/2013 | CN202689993U Anti-theft type jackscrew of oil pipe hanger |
| 01/23/2013 | CN202689992U Packing box with packing box body capable of moving horizontally |
| 01/23/2013 | CN202689991U Hydraulic lifting anti-spray device |
| 01/23/2013 | CN202689990U Rolling polish-rod centering rod-pumped well wellhead packing box |
| 01/23/2013 | CN202689989U Drop-preventing end cap for testing instrument |