| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 02/10/2009 | US7487837 Riser rotating control device |
| 02/10/2009 | US7487832 Force transfer apparatus to assist release of loaded member |
| 02/10/2009 | US7487831 Downhole surge pressure reduction and filtering apparatus |
| 02/10/2009 | CA2452457C Apparatus for controlling a tool having a mandrel that must be stroked into or out of a well |
| 02/05/2009 | WO2009018020A1 Flow control for increased permeability planes in unconsolidated formations |
| 02/05/2009 | WO2009017418A1 Sealing arrangement, and corresponding method |
| 02/05/2009 | WO2009016353A2 Winch assembly |
| 02/05/2009 | WO2009016346A2 Deployment system |
| 02/05/2009 | WO2008154384A3 Wrap on reactive element barrier packer and method of creating same |
| 02/05/2009 | WO2008152345A3 Multi-zone formation fluid evaluation system and method for use of same |
| 02/05/2009 | US20090032267 Flow control for increased permeability planes in unconsolidated formations |
| 02/05/2009 | US20090032262 Flow control system having an isolation device for preventing gas interference during downhole liquid removal operations |
| 02/05/2009 | US20090032257 Method and Apparatus for Consolidating a Wellbore |
| 02/05/2009 | US20090032256 Throttle unit for dump bailer and method of blocking a water out zone in a production well utilizing the same |
| 02/05/2009 | US20090032252 Degradable cement compositions containing degrading materials and methods of cementing in wellbores |
| 02/05/2009 | US20090032243 Polymer Shock Absorber for Use with Well Head Lubricator Assembly |
| 02/05/2009 | CA2694606A1 Winch assembly |
| 02/05/2009 | CA2694581A1 Deployment system |
| 02/05/2009 | CA2693250A1 Sealing arrangement and corresponding method |
| 02/04/2009 | EP2020482A2 Liner Hanger, Running Tool and Method |
| 02/04/2009 | CN201190550Y Self-strengthening balancing water-shutoff packer for horizontal well |
| 02/04/2009 | CN201190549Y Expanding water-shutoff packer for horizontal well |
| 02/04/2009 | CN201190548Y Petroleum killing bell |
| 02/04/2009 | CN201190547Y Portal polish-rod sealing device for multifunction pumping unit |
| 02/04/2009 | CN101358527A Butt-joint water detection and blocking equipment |
| 02/04/2009 | CN101358517A Telemetry subsystem to communicate with plural downhole modules |
| 02/04/2009 | CN101358514A Special bridge plug for cementing open hole well |
| 02/04/2009 | CN101358513A Water injection packer |
| 02/03/2009 | US7484564 Delayed-acid releasing activator comprises an orthoacetate, orthoformate, orthopropionate or a polyorthoester; stabilization of subterranean formations; tackifier resins comprising polymethyl (meth)acrylate, poly(meth)acrylic acid, acrylamido-2-methylpropanesulfonic acid polymers and the like; fracturing |
| 02/03/2009 | US7484559 Method for drilling and casing a wellbore with a pump down cement float |
| 02/03/2009 | US7484525 Resettable failed nozzle relief valve |
| 02/03/2009 | CA2557830C A method and a device for sealing a void incompletely filled with a cast material |
| 02/03/2009 | CA2553892C Contained micro-particles for use in well bore operations |
| 02/01/2009 | CA2693261A1 Injection plane initiation in a well |
| 01/29/2009 | WO2009014797A1 System and method to seal multiple control lines |
| 01/29/2009 | WO2009014795A2 Annular seal between wellhead and hanger |
| 01/29/2009 | WO2008122577A3 Intervention system dynamic seal and compliant guide |
| 01/29/2009 | US20090025939 Non-orienting tree cap |
| 01/29/2009 | US20090025936 Connection system for subsea flow interface equipment |
| 01/29/2009 | US20090025930 Continuous flow drilling systems and methods |
| 01/29/2009 | US20090025925 Multi-lock adapters for independent screwed wellheads and methods of using same |
| 01/29/2009 | CA2691253A1 Seal system and method |
| 01/28/2009 | EP2019524A2 Electronics module |
| 01/28/2009 | CN201187324Y Gas column hole packer |
| 01/28/2009 | CN201187278Y Automatic mud grouting floating hoop and floating shoe |
| 01/28/2009 | CN201187277Y Well head automatic regulating device |
| 01/28/2009 | CN201187276Y Seal automatic feed device of oil pumping machine well head |
| 01/28/2009 | CN201187275Y Double-tube water-blending process flow well head composite device |
| 01/28/2009 | CN201187274Y Single tube annular process flow well head composite device |
| 01/28/2009 | CN201187273Y Well head composite device for adjusting electric pump well flow |
| 01/28/2009 | CN201187272Y Output/input shaft seal packing gland of oil pumping machine |
| 01/28/2009 | CN201187271Y Seal packing of oil pumping polished rod |
| 01/28/2009 | CN101353954A Methods and apparatus to apply axial force to a packer in a downhole tool |
| 01/27/2009 | US7481277 Method and apparatus for ECP element inflation utilizing solid laden fluid mixture |
| 01/27/2009 | US7481269 Hybrid wellhead system and method of use |
| 01/27/2009 | CA2500163C Cementing through a side pocket mandrel |
| 01/25/2009 | CA2594579A1 Loss circulation pill |
| 01/22/2009 | WO2009012365A1 Modular saddle flapper valve |
| 01/22/2009 | WO2009011953A1 Plugging a mined-through well |
| 01/22/2009 | WO2009011594A2 Method and device for cleaning and sealing a well |
| 01/22/2009 | WO2009010659A2 Use of a fluid composition with delayed cross-linking for holding a casing inside a drill hole, and method for reinforcing a drill hole |
| 01/22/2009 | WO2009009901A1 In situ determination of critical desorption pressures |
| 01/22/2009 | WO2008137447A3 A method and apparatus for subterranean fracturing |
| 01/22/2009 | WO2008133527A3 Barrier for instrumentation piping |
| 01/22/2009 | WO2008070271A4 System and method for facilitating downhole operations |
| 01/22/2009 | US20090020295 Deep water hurricane valve |
| 01/22/2009 | US20090020286 Plugging a Mined-Through Well |
| 01/22/2009 | US20090020285 Reverse-Circulation Cementing of Surface Casing |
| 01/22/2009 | US20090020283 2D Well Testing with Smart Plug Sensor |
| 01/22/2009 | CA2693099A1 Method and device for cleaning and sealing a well |
| 01/22/2009 | CA2690142A1 In situ determination of critical desorption pressures |
| 01/21/2009 | EP2017432A2 Support assembly for downhole tool, downhole tool and method |
| 01/21/2009 | EP2016257A2 Wellbore method and apparatus for completion, production and injection |
| 01/21/2009 | EP1381750B1 Drilling system with expandable sleeve |
| 01/21/2009 | CN201184166Y Automatic grouting float collar of built in type shutter |
| 01/21/2009 | CN201184165Y Water well blowout preventer |
| 01/21/2009 | CN201184164Y Manual double-layer blowout preventer |
| 01/21/2009 | CN201184163Y Synergistic machine of blowout prevention box |
| 01/21/2009 | CN201184162Y Dismountable three-shutter heat preservation heating apparatus |
| 01/21/2009 | CN201184161Y Automatic paste tightening type oil pumping machine well polish rod seal packing kit |
| 01/21/2009 | CN201184160Y Rotating jack-proof seal device |
| 01/21/2009 | CN201184138Y Novel blowout prevention connecting-tripping device |
| 01/21/2009 | CN201184137Y Novel blowout prevention connecting-tripping device |
| 01/21/2009 | CN101351607A Anchoring system for posts |
| 01/21/2009 | CN101349147A Expansion type bare hole padding packer |
| 01/21/2009 | CN101349146A Deep water hurricane-proof valve |
| 01/20/2009 | US7478679 Field assembled packer |
| 01/20/2009 | US7478676 Methods and devices for treating multiple-interval well bores |
| 01/20/2009 | US7478675 Extended settable compositions comprising cement kiln dust and associated methods |
| 01/20/2009 | US7478673 Frac head including a mixing chamber |
| 01/20/2009 | CA2469719C Composition for use in sealing a porous subterranean formation, and methods of making and using |
| 01/16/2009 | CA2637543A1 Split-vane blender method and apparatus |
| 01/15/2009 | WO2009009343A2 Methods and compositions for preventing high density well completion fluid loss |
| 01/15/2009 | WO2009009085A2 High capacity wellhead connector having a single annular piston |
| 01/15/2009 | WO2009007916A2 Theft-deterrence device |
| 01/15/2009 | WO2009007379A2 Method of lining a well or a pipe using an inflatable bladder |
| 01/15/2009 | WO2009006974A1 Method to cement a perforated casing |
| 01/15/2009 | WO2005068769A3 Inflate control system for inflatable straddle stimulation tool |
| 01/15/2009 | US20090014182 Drill pipe wiper system and associated method |
| 01/15/2009 | US20090014178 Well treatment |