Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells › E21B 33 - Sealing or packing boreholes or wells
Patents for E21B 33 - Sealing or packing boreholes or wells (33,564)
10/2012
10/10/2012CN202483536U Preset working barrel of water injection well
10/10/2012CN202483507U High-pressure sealing rubber barrel assembly
10/10/2012CN202483506U High-pressure self-sealing rubber cup assembly enabling repeated sitting for packer
10/10/2012CN202483505U Self-test sealing high-pressure water injection packer
10/10/2012CN202483504U Packer capable of preventing packer rubber barrel from being damaged
10/10/2012CN202483503U Rubber barrel shoulder protector anti-channeling anchor ring
10/10/2012CN202483502U Steam injection glide packer
10/10/2012CN202483501U Top blanking plug of underwater Christmas tree
10/10/2012CN202483500U Combined type mandrel hanger
10/10/2012CN202483499U Wellhead device of production platform
10/10/2012CN202483498U Packing case enabling quick replacement of packing
10/10/2012CN202483497U Ring sealing assembly of bothway metallic sealing strcuture
10/10/2012CN202483496U Multifunctional totally-closed anti-theft well head device
10/10/2012CN202483495U Copper gasket composite metallic sealing ring
10/10/2012CN202480952U Well-cementation medicinal-liquid water distribution car
10/10/2012CN102720462A Construction process of through-tubing cable bridge plug
10/10/2012CN102720461A Grout stopping method and grout stopping device for hydraulic drill jumbo
10/10/2012CN102720460A Float collar structure in spherical and conical sealing fit
10/10/2012CN102720459A Wedge-type compression packer
10/10/2012CN102720458A Novel sucker rod sealing ring
10/10/2012CN102720457A Adjustable sucker rod sealing assembly
10/10/2012CN102720456A Low-friction wellhead polished rod sealer
10/10/2012CN102720455A High-performance sucker rod sealing ring
10/10/2012CN101929317B Undersize-hole oil pipe plugging device
10/10/2012CN101769129B Integral layering gas recovery technology tubular column and application method thereof
10/10/2012CN101586455B Anchoring expansion type packer
10/10/2012CN101575954B Connecting device between side gate and shell of ram blowout preventer
10/10/2012CN101111660B Gate device for blowout preventer and method for locking gate block in the blowout preventer
10/09/2012US8283402 Downhole seal element formed from a nanocomposite material
10/09/2012US8281878 Method of drilling and running casing in large diameter wellbore
10/09/2012US8281864 Apparatus and method for recovering fluids from a well and/or injecting fluids into a well
10/09/2012US8281859 Methods and compositions comprising cement kiln dust having an altered particle size
10/09/2012US8281858 Shot perforator device and method for water well bore decommissioning
10/09/2012CA2710944C Snubbing tubulars from a sagd well
10/09/2012CA2659010C Metal to metal seal for downhole tools
10/09/2012CA2630167C Packer cups for use inside a wellbore
10/04/2012WO2012135292A2 Apparatus and method for completing wells using slurry containing a shape-memory material particles
10/04/2012WO2012134639A2 Esp with offset laterally loaded bearings
10/04/2012WO2012134514A1 Methods of releasing at least one tubing string below a blow-out preventer
10/04/2012WO2012129685A1 Method for managing channeling in geothermal recovery of hydrocarbon reservoirs
10/04/2012WO2012103243A3 Setting tool
10/04/2012WO2012074404A3 Method and device for drilling a pit or passage, and flexible tube therefor
10/04/2012US20120250208 Electronic Switch and Circuit for Select-Fire Perforating Guns
10/04/2012US20120248703 Multi-elastomer seal
10/04/2012US20120247789 A fluid composition for use in inflatable bag plugging of an earth bore hole
10/04/2012US20120247788 Seal with bellows style nose ring
10/04/2012US20120247775 Downhole tool with pumpable section
10/04/2012US20120247768 Crosslinking agents for producing gels and polymer beads for oilfield applications
10/04/2012US20120247767 Stage tool for wellbore cementing
10/04/2012US20120247766 Geothermal grout, methods of making geothermal grout, and methods of use
10/04/2012US20120247754 Stuffing box assembly
10/04/2012CA2831451A1 Apparatus and method for completing wells using slurry containing a shape-memory material particles
10/04/2012CA2831228A1 Esp with offset laterally loaded bearings
10/03/2012EP2504520A2 Breech lock mechanisms for blowout preventer and method
10/03/2012CN202468981U Blowout preventer side door seal ring
10/03/2012CN202467893U Gas, water, slag separation integrated apparatus
10/03/2012CN202467829U Integrated mechanical water detection, water plugging and channeling detection tubular column
10/03/2012CN202467799U Profile control and water shutoff combination device for thick oil horizontal well of screen pipe completion
10/03/2012CN202467795U Water distributor special for separated injection, ball injection and profile control of water injection well
10/03/2012CN202467775U Intelligent supercharging one-way fixed displacement device of oil field sleeve machine
10/03/2012CN202467760U Suspended type touch pressure rubber plug
10/03/2012CN202467759U Double-injection device for profile control
10/03/2012CN202467758U Novel linear cement head stop pin moving device
10/03/2012CN202467757U Novel cement head stop pin quick assembly device
10/03/2012CN202467756U Automatic oil well anti-withdrawal grouting float hoop
10/03/2012CN202467755U Double-purpose hydraulic grouting pump
10/03/2012CN202467754U Suspended cement head
10/03/2012CN202467753U Blanking plug for tail tube of oil and water well
10/03/2012CN202467752U Stepwise deblocking packer
10/03/2012CN202467751U Layered water injection blanking plug
10/03/2012CN202467750U Downhole anti-loss device
10/03/2012CN202467749U Side door blowout preventer with air damping buffer hydraulic switch
10/03/2012CN202467748U Automatic centering semi-sealed gate with floating seal
10/03/2012CN202467747U Anti-spraying device of continuous oil pipe working wellhead
10/03/2012CN202467746U Wedge disc positioning device for blowout preventer
10/03/2012CN202467745U Lubricating and sealing device for polished rod of pumping well
10/03/2012CN202467744U Working double-layer self-sealing device
10/03/2012CN202467743U High-temperature high-pressure multi-stage sealing adjustable deviated wellhead
10/03/2012CN202467742U Anti-theft and anti-dripping drilling sleeve cap
10/03/2012CN202467741U Burglar alarm of oil well sleeve
10/03/2012CN202467740U Rod parting blowout preventer
10/03/2012CN202467739U Snubbing work-over rig
10/03/2012CN202467738U Anti-deviation wellhead sealing device
10/03/2012CN202467737U Wellhead apparatus for annulus logging
10/03/2012CN202467736U Titanium alloy injection-prevention pipe
10/03/2012CN202467729U Packing filling device for pumping well
10/03/2012CN102713137A Chemical diversion technique
10/03/2012CN102713136A Breech lock mechanisms for blowout preventer and method
10/03/2012CN102713135A Dual barrier plug system for a wellhead
10/03/2012CN102713133A Subsea cap
10/03/2012CN102709904A Electric control and supply system
10/03/2012CN102704986A Pressure-controlled hole sealing method for gas drainage hole
10/03/2012CN102704890A Controllable blanking plug
10/03/2012CN102704888A Novel underwater manifold sledge
10/03/2012CN102704887A Positionless expanding lock ring for subsea annulus seals for lockdown
10/03/2012CN102704886A Sealing assembly for oil pumping rod
10/03/2012CN102704885A Multipurpose well shutting device
10/03/2012CN102704884A Intelligentized multi-functional well head device
10/03/2012CN101691834B Inner tube-free drillable-retrievable grading cementing well completion technology
10/03/2012CN101666218B Double-sealing packing box for oil field wellhead and wellhead double-sealing method
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