| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 04/09/2009 | US20090090508 Liner Drilling Method and Liner Hanger |
| 04/09/2009 | US20090090502 Annulus sealing assembly |
| 04/09/2009 | US20090090500 Arrangement and a Method for Heat Transport and Use in Connection With Subsea Equipment |
| 04/09/2009 | CA2700176A1 Open-hole wellbore lining |
| 04/08/2009 | EP2044289A1 Packer variable volume excluder and sampling method therefor |
| 04/08/2009 | EP2044288A1 Method for removing a sealing plug from a well |
| 04/08/2009 | CN201218106Y Segmented water injection hole packer |
| 04/08/2009 | CN201218096Y Multifunctional installation apparatus for oil extraction gas well mouth oil jacket pressure cap |
| 04/08/2009 | CN201218080Y Gas well dividing test novel technique column |
| 04/08/2009 | CN201218079Y Improved oil well packing kit |
| 04/08/2009 | CN201218078Y Polished rod breaking anti-blowout tool for oil pumping well |
| 04/08/2009 | CN201218077Y Air bag type self-sealing blowout preventer |
| 04/08/2009 | CN201218076Y Shaft mouth anti-blowout pipe |
| 04/08/2009 | CN201218075Y Plate-type adjustable fixed choke manifold apparatus |
| 04/08/2009 | CN201218074Y Sealing polished rod type shaft mouth sealing device for down-hole hydraulic self-sealing packing kit |
| 04/08/2009 | CN201218073Y Drill hole pipe reinforcing device |
| 04/08/2009 | CN201218072Y Lubrication cooling packing kit |
| 04/08/2009 | CN201218071Y Dynamic correcting polished rod sealer |
| 04/08/2009 | CN201218070Y Blowout preventer for test borehole |
| 04/08/2009 | CN101403291A Preset production fluid section plane test method of mechanical mining horizontal well and special shaft mouth test apparatus |
| 04/08/2009 | CN101403286A Hydraulic cementing basket |
| 04/08/2009 | CN101403285A Physical foam cementing method |
| 04/08/2009 | CN101403284A Down-hole tool and controllable segment sealing device for down-hole working barrel seal |
| 04/07/2009 | US7513313 Bottom plug for forming a mono diameter wellbore casing |
| 04/07/2009 | US7513308 Tubing running equipment for offshore rig with surface blowout preventer |
| 04/07/2009 | CA2551072C Retrievable packer assembly and system with releaseable body locking ring |
| 04/07/2009 | CA2495916C Cup seal expansion tool |
| 04/07/2009 | CA2383370C Methods and associated apparatus for downhole data retrieval, monitoring and tool actuation |
| 04/05/2009 | CA2640465A1 Hydraulic actuated pump system |
| 04/04/2009 | CA2639869A1 Wellhead isolation sleeve assembly |
| 04/02/2009 | WO2009042121A2 Externally activated seal system for wellhead |
| 04/02/2009 | WO2009041823A1 Activating mechanism |
| 04/02/2009 | WO2009040561A2 Choke assembly |
| 04/02/2009 | WO2009040502A1 Methods and compositions relating to minimizing particulate migration over long intervals |
| 04/02/2009 | WO2009039739A1 Wellhead assembly |
| 04/02/2009 | WO2009019515A3 Connector |
| 04/02/2009 | WO2008127126A3 Device of a test plug |
| 04/02/2009 | WO2008125629A3 Method of cementing an off bottom liner |
| 04/02/2009 | WO2006034298A3 Particles for use as proppants or in gravel packs, methods for making and using the same |
| 04/02/2009 | WO2005040545A3 Tree mounted well flow interface device |
| 04/02/2009 | US20090084559 Well packing |
| 04/02/2009 | US20090084550 Water Swelling Rubber Compound for Use In Reactive Packers and Other Downhole Tools |
| 04/02/2009 | US20090084539 Downhole sealing devices having a shape-memory material and methods of manufacturing and using same |
| 04/02/2009 | US20090084538 Drilling flange and independent screwed wellhead with metal-to-metal seal and method of use |
| 04/02/2009 | US20090084176 Formation Evaluation Using Estimated Borehole Tool Position |
| 04/02/2009 | DE102007043621A1 Method for implementing drilling, involves carrying out drilling in axial direction through drilling channel provided in partition wall, where over-pressure area for drilling is adjoined |
| 04/02/2009 | CA2700574A1 Externally activated seal system for wellhead |
| 04/01/2009 | EP2042684A1 Choke assembly |
| 04/01/2009 | EP2041462A1 An apparatus for operating controllable installation means |
| 04/01/2009 | EP2041392A1 Sealing device |
| 04/01/2009 | CN201214999Y Pneumatic oilfield cementing cement car foam killer auto charging device |
| 04/01/2009 | CN201214998Y Sealer |
| 04/01/2009 | CN201214997Y Metal seal double tube christmas tree wellhead device |
| 04/01/2009 | CN201214996Y Sealer for replacing disk root |
| 04/01/2009 | CN201214995Y Sucker rod blowout preventer for polished rod for oilfield |
| 04/01/2009 | CN101397896A Water-shutoff method for sealing gas well effluent section by combination of incline cement and gas injection compression |
| 04/01/2009 | CN101397895A Multifunctional polish rod seal device |
| 03/31/2009 | US7510019 Forming a metal-to-metal seal in a well |
| 03/31/2009 | US7510018 Convertible seal |
| 03/31/2009 | US7510017 Sealing and communicating in wells |
| 03/31/2009 | US7510016 Packer |
| 03/31/2009 | US7510015 Packers and methods of use |
| 03/31/2009 | US7510007 Double swivel apparatus and method |
| 03/31/2009 | US7510006 Pipe running tool having a cement path |
| 03/31/2009 | US7510005 Acrylate, methylacrylate polymerizable monomer; ammonium persulfate/N,N,N',N'-tetramethylethylene diamine redox initiator; dioctadecyldimethylammonium chloride antistatic agent; heat fluid system to decrease the risk of sparking and fire |
| 03/31/2009 | US7510004 Method for treating an underground formation |
| 03/31/2009 | US7510002 Apparatus and method for sealing a wellbore |
| 03/31/2009 | CA2555563C Apparatus and methods for creation of down hole annular barrier |
| 03/31/2009 | CA2552525C Method of reducing water influx into gas wells |
| 03/26/2009 | WO2009039349A1 System and method for providing additional blowout preventer control redundancy |
| 03/26/2009 | WO2009038474A1 A method of abandoning a petroleum well |
| 03/26/2009 | WO2009038469A1 Insulated pipe coupling |
| 03/26/2009 | WO2009037658A1 Low stress traction system |
| 03/26/2009 | WO2009037657A1 Anchoring system for use in a wellbore |
| 03/26/2009 | WO2008111975A3 Well tool having enhanced packing element assembly |
| 03/26/2009 | US20090078419 Methods and compositions relating to minimizing particulate migration over long intervals |
| 03/26/2009 | US20090078418 Methods and Compositions relating to minimizing particulate migration over long intervals |
| 03/26/2009 | US20090078407 Retrievable downhole packer assembly |
| 03/26/2009 | US20090078406 Method of Generating a Non-Plugging Hydrate Slurry |
| 03/26/2009 | US20090078405 Pressure Containment Devices and Methods of Using Same |
| 03/26/2009 | DE202009000462U1 Vorrichtung zum Verfüllen eines Bohrloches Apparatus for filling a borehole |
| 03/26/2009 | CA2699895A1 Anchoring system for use in a wellbore |
| 03/26/2009 | CA2699877A1 Low stress traction system |
| 03/25/2009 | EP2039879A2 Apparatus and methods for running liners |
| 03/25/2009 | EP2039878A1 Subsea lateral drilling |
| 03/25/2009 | EP2039877A2 Shutdown system for an underwater hydrocarbon production facility |
| 03/25/2009 | EP2038514A1 Sampling tool for hydrocarbon-producing wells |
| 03/25/2009 | EP1721058B1 Connection system for subsea flow interface equipment |
| 03/25/2009 | CN201212374Y Oil sleeve zonal injection packer |
| 03/25/2009 | CN201212373Y Elastic tube-type casting head |
| 03/25/2009 | CN201212372Y Piston tube-type casting head |
| 03/25/2009 | CN201212371Y Rotary type outer brake transversal automatic compensation sealer |
| 03/25/2009 | CN201212370Y Hydraulic blowout prevention box |
| 03/25/2009 | CN101395339A Method and apparatus to cement a perforated casing |
| 03/25/2009 | CN101395337A Method and apparatus for selective treatment of a perforated casing |
| 03/25/2009 | CN101392636A Sand prevention water injection packer |
| 03/25/2009 | CN101392635A Novel self-sealing blowout preventer |
| 03/25/2009 | CN100472028C Removable seal carrier for blowout preventer bonnet assembly |
| 03/25/2009 | CA2638234A1 A retrievable downhole packer assembly |
| 03/24/2009 | US7506686 Diverter plugs for use in well bores and associated methods of use |