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