Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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08/14/2013 | CN203130015U Blowout-preventing offset-regulating multistage-sealing sucker rod sealer |
08/14/2013 | CN203130014U Penetrating-type oil tube hanger positioning device |
08/14/2013 | CN203130013U Multifunctional anti-deflection packing box |
08/14/2013 | CN203130012U Novel seal guiding device |
08/14/2013 | CN203130011U Plugging device for double-tube directional drilling machine |
08/14/2013 | CN203130010U Novel plugging device for soft coal seam deep-hole double-pipe directional drilling machine |
08/14/2013 | CN203130009U Control device for electric locking lever of blower preventer |
08/14/2013 | CN203129988U Drilling system for coal mine underground tunnel water prevention and control |
08/14/2013 | CN203129980U Roll ball centering device |
08/14/2013 | CN103249981A Boltless locking arrangement |
08/14/2013 | CN103249908A Downhole method and apparatus |
08/14/2013 | CN103249907A Blowout preventer blade assembly and method of using same |
08/14/2013 | CN103244109A High-temperature and high-pressure leaking stoppage simulation device |
08/14/2013 | CN103244087A Profile control and water plugging well selection decision-making method for low-permeability reservoirs |
08/14/2013 | CN103244074A Umbrella type hole packer |
08/14/2013 | CN103244073A Method for sealing closed gas drainage hole in soft coal bed areas |
08/14/2013 | CN103244072A Bifunctional hydraulic grouting pump |
08/14/2013 | CN103244071A Method for plugging old underground gas storage well |
08/14/2013 | CN103244070A Five-level multilateral well seal tool |
08/14/2013 | CN103244069A Wellhead blowout-proofing box |
08/14/2013 | CN101718182B Ball valve type inside and outside integrative downhole blow-out preventer |
08/13/2013 | US8505870 Shear blade geometry and method |
08/13/2013 | US8505639 Indexing sleeve for single-trip, multi-stage fracing |
08/13/2013 | US8505630 Consolidating spacer fluids and methods of use |
08/13/2013 | US8505629 Foamed spacer fluids containing cement kiln dust and methods of use |
08/13/2013 | US8505623 Retrievable bridge plug |
08/13/2013 | CA2781268C Breech lock mechanisms for blowout preventer and method |
08/13/2013 | CA2756775C Downhole swellable sealing system and method |
08/13/2013 | CA2751528C Method for diversion of hydraulic fracture treatments |
08/08/2013 | WO2013116234A2 Blowout preventer and method of using same |
08/08/2013 | WO2013116120A1 Method and system for rapid containment and intervention of a subsea well blowout |
08/08/2013 | WO2013116072A1 Engineering plastic/ inorganic fiber blends as lost circulation materials |
08/08/2013 | WO2013115948A1 Wiper plug elements and methods of stimulating a wellbore environment |
08/08/2013 | WO2013115924A1 Temporary protective cover for operative devices |
08/08/2013 | WO2013115923A1 Pressure actuation enabling method |
08/08/2013 | WO2013115655A1 A method and an apparatus for retrieving a tubing from a well |
08/08/2013 | WO2013115652A1 A method for establishment of an annulus barrier in a subterranean well |
08/08/2013 | WO2013084170A3 Improvements on foldable sandwich tubular structure |
08/08/2013 | US20130199802 Blowout preventer and method of using same |
08/08/2013 | US20130199801 Wellhead connector and method of using same |
08/08/2013 | US20130199800 Wiper plug elements and methods of stimulating a wellbore environment |
08/08/2013 | US20130199793 Well intervention |
08/08/2013 | US20130199773 Stuffing box |
08/07/2013 | EP2623708A2 Wellhead connector and method of using same |
08/07/2013 | EP2623578A1 Compositions and methods for reducing torque during well cementing |
08/07/2013 | EP2622173A2 Rotating control device |
08/07/2013 | EP2622172A2 Blowout preventer blade assembly and method of using same |
08/07/2013 | EP2622171A2 Blowout preventer blade assembly and method of using same |
08/07/2013 | CN203117806U Main pressure control device of universal rotating blowout preventer control system |
08/07/2013 | CN203114241U Fracturing bridge plug |
08/07/2013 | CN203114240U Large-drift-diameter intubation tube oil production bridge plug |
08/07/2013 | CN203114239U Multi-functional horizontal type float collar float shoes with drilling function |
08/07/2013 | CN203114238U Compression packer rubber tube |
08/07/2013 | CN203114237U Integrated cover-type thermosensitive metal sheet and telescopic packer |
08/07/2013 | CN203114236U Hand-releasing water blocking packer |
08/07/2013 | CN203114235U Adjustable polymer flooding underground blanking plug |
08/07/2013 | CN203114234U Small-diameter upward-moving sealing device of casing damage well |
08/07/2013 | CN203114233U Conical rubber core of universal blowout preventer |
08/07/2013 | CN203114232U Horizontal drilling lossless distance-adjustable type safety blowout preventing device |
08/07/2013 | CN203114231U Metal sealing ring |
08/07/2013 | CN203114230U Multifunctional three-offset wellhead packing box |
08/07/2013 | CN203114229U Oil stealing prevention switch in sleeve |
08/07/2013 | CN203114228U Wellhead protecting device for ground water monitoring well |
08/07/2013 | CN203114227U Testable oil jacket sealing antitheft device for oil well |
08/07/2013 | CN203114226U Self-sealing packing box |
08/07/2013 | CN203114216U Peristaltic compensator |
08/07/2013 | CN203114192U Intelligent Y joint allowing plug removal |
08/07/2013 | CN103233699A Multiple-working-face parallel working process for shaft ground pre-grouting |
08/07/2013 | CN103233698A Sump packer |
08/07/2013 | CN103233697A Oil well mouth blowout preventing device |
08/07/2013 | CN103233689A Wellhead hydraulic blowout prevention pipe lifting device |
08/07/2013 | CN103233483A Deep hole drilling technology for blocking earth ground fracturing and preventing local regional earthquake |
08/07/2013 | CN102061151B Plugging bearing material for petroleum drilling, and preparation method and application thereof |
08/07/2013 | CN101701513B Drilling-plug free tubular column with sand control and well cementation for open-hole horizontal well |
08/07/2013 | CN101555778B External packer of high temperature pipe |
08/06/2013 | US8500127 Bi-directional metal-to-metal seal |
08/06/2013 | US8499844 Expandable packer |
08/06/2013 | US8499843 System and method to seal using a swellable material |
08/06/2013 | US8499842 Dual barrier plug system for a wellhead |
08/06/2013 | US8499841 Frac sleeve with rotational inner diameter opening |
08/06/2013 | US8499837 Nanoparticle-densified Newtonian fluids for use as cementation spacer fluids and completion spacer fluids in oil and gas wells |
08/06/2013 | US8499833 Zero-leakoff emulsified acid |
08/06/2013 | CA2804699A1 Well cap assembly |
08/06/2013 | CA2767060A1 Stuffing box |
08/06/2013 | CA2735639C Wellhead control line deployment |
08/06/2013 | CA2710783C Pump drive head with stuffing box |
08/06/2013 | CA2552576C Externally activated seal system for wellhead |
08/06/2013 | CA2510212C Method and system to deploy control lines |
08/03/2013 | CA2804558A1 Wellhead connector and method of using same |
08/01/2013 | WO2013112267A1 Tubular anchoring system and a seat for use in the same |
08/01/2013 | WO2013112266A1 Tubular anchoring system and method |
08/01/2013 | WO2013112054A1 Method and device for extending at least the lifetime of a christmas tree or an umbilical |
08/01/2013 | WO2013110619A1 Communication in a subsea well control system |
08/01/2013 | WO2013080078A3 An apparatus, module, device and method for shearing objects |
08/01/2013 | WO2012122159A3 Subsea actuation system |
08/01/2013 | WO2012118611A3 Well plug and abandonment choke insert |
08/01/2013 | US20130192896 Method for colling a rotating control device |
08/01/2013 | US20130192853 Wellbore packer back-up ring assembly, packer and method |
08/01/2013 | US20130192847 Seal assemblies in subsea rotating control devices |
08/01/2013 | US20130192843 Method and system for rapid containment and intervention of a subsea well blowout |