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)
05/2005
05/24/2005US6896051 Anti-rotation method and apparatus for limiting rotation of cementing plugs
05/24/2005US6896049 Deformable member
05/24/2005CA2379864C Extrusion resistant inflatable tool
05/24/2005CA2370172C Ribbed sealing element and method of use
05/24/2005CA2318528C Method for drilling and completing oil wells with small intermediate diameters
05/24/2005CA2247812C Method of removing wellhead assemblies
05/19/2005WO2005045181A1 A retrievable downhole tool and running tool
05/19/2005US20050107265 Methods For Controlling The Fluid Loss Properties Of Viscoelastic Surfactants Based Fluids
05/19/2005US20050103525 Method and device for liner system
05/19/2005US20050103505 Well stuffing box packing
05/19/2005US20050103504 Compressible darts and methods for using these darts in subterranean wells
05/19/2005US20050103493 Moled foam plugs, plug systems and methods of using same
05/19/2005US20050103492 Plug systems and methods for using plugs in subterranean formations
05/19/2005DE102004047387A1 Unterwasserhydraulikkupplung zur Verwendung mit Verteilerplatten Underwater hydraulic coupling for use with distributor plates
05/18/2005CN2700548Y Non-countercheck inner tube cementing tool
05/18/2005CN2700547Y Grooved packing box
05/18/2005CN2700546Y Combined well mouth theftproof device
05/18/2005CN2700545Y Lost circulation prevention valve seal device
05/18/2005CN1616590A Water glass high temperature blocking agent for oil production
05/17/2005US6892820 Modular retrievable packer
05/17/2005US6892819 Forming a wellbore casing while simultaneously drilling a wellbore
05/17/2005US6892811 Tubing string anchoring tool
05/17/2005CA2366139C Expandable packer isolation system
05/17/2005CA2365710C Method and apparatus for drilling and completing a well
05/17/2005CA2262279C Down hole, hydrodynamic well control, blowout prevention
05/12/2005WO2005042918A1 A method of abandoning a well
05/12/2005WO2005042917A1 Underbalanced well drilling and production
05/12/2005WO2005042914A1 Blow out preventer transfer platform
05/12/2005WO2005042911A2 System for drilling oil and gas wells using oversized drill string to achieve increased annular return velocities
05/12/2005WO2005042906A2 Subsea completion system, and methods of using same
05/12/2005WO2004063607A3 Actuator for well-head valve or other similar applications and system incorporating same
05/12/2005US20050098754 Manual control device
05/12/2005US20050098349 Control systems and methods for active controlled bottomhole pressure systems
05/12/2005US20050098323 Forming a wellbore casing while simultaneously drilling a wellbore
05/12/2005US20050098321 Subsea completion system, and methods of using same
05/12/2005US20050098313 Downhole tool
05/11/2005EP1529151A1 Well abandonment apparatus
05/11/2005EP1529150A2 Electric power control for sickline operations in wellbores
05/11/2005CN2698966Y Hydraulic down-hole casing valve for under balance drilling
05/11/2005CN2698964Y Recycled multi-stage fluke casing anchoring device
05/11/2005CN2698963Y Anti-theft case for oil well
05/11/2005CN2698962Y Hole packer for coal petrography drilling
05/10/2005US6889770 Method for thermally protecting subsea installations, and apparatus for implementing such thermal protection
05/10/2005US6889766 Methods for passing a swelling agent into a reservoir to block undesirable flow paths during oil production
05/10/2005CA2424164C Method and apparatus for injecting packing into stuffing boxes for reciprocating rods
05/10/2005CA2310236C Tubing cleanout spool
05/10/2005CA2280003C Downhole packer
05/10/2005CA2236715C Plug launching device
05/06/2005WO2005041031A1 Method and apparatus for dynamic application management in sub-sea well installations
05/06/2005WO2005040545A2 Tree mounted well flow interface device
05/05/2005US20050092522 Underbalanced well drilling and production
05/05/2005US20050092497 Blow out preventer transfer platform
05/05/2005US20050092496 Wellhead isolation tool and method of fracturing a well
05/05/2005US20050092492 Contacting oil or gas formation in a sequence with an aqueous solution, a hydrocarbon fluid, a glycol ether solvent, an epoxy resin derived from bisphenols, or a poly phenolic resin (novolac resins) in a glycol ether solvent, and then with a polyamine curing agent
05/05/2005US20050092485 Annular isolators for expandable tubulars in wellbores
05/04/2005EP1527253A1 Inflation tool with real-time temperature and pressure probes
05/04/2005EP0996812B1 Deformed multiple well template and process of use
05/04/2005CN2697307Y Hole-cleaning packer
05/04/2005CN2697306Y High-pressure multi-function self-packing packer
05/03/2005US6886631 Inflation tool with real-time temperature and pressure probes
05/03/2005CA2329471C Decentralizing, centralizing, locating and orienting subsystems and methods for subterranean multilateral well drilling and completion
05/03/2005CA2280963C Inflatable downhole seal
05/03/2005CA2260587C Multi-level monitoring well
05/03/2005CA2224505C Tubing rotator
04/2005
04/28/2005WO2005038193A1 Retrievable pacer assembly and system with releaseable body locking ring
04/28/2005WO2005038192A1 Variable size coil tubing gripping elements
04/28/2005US20050087347 Two slip retrievable packer for extreme duty
04/28/2005US20050087342 Method and apparatus for cementing pipe in oil and gas wells
04/28/2005US20050087337 Liner hanger with sliding sleeve valve
04/27/2005EP1295006A4 Pipe handling apparatus and method of landing items at a well location
04/27/2005CN2695622Y Packer capable of flushing and lifting for depacking
04/27/2005CN2695621Y Jump ring lead sealing packer
04/27/2005CN2695620Y Realeasing gadget filling tool
04/27/2005CN2695619Y Quick assembling blow-out preventer
04/27/2005CN2695618Y Blow-out preventer for pumping well
04/27/2005CN2695617Y Casing pump bouble-stage pneumatic anti-blowout box for oil production
04/27/2005CN2695616Y Anti-pollution device of packer
04/27/2005CN2695611Y Peristalsis compensator
04/27/2005CN1610788A Method of expanding a tubular element in a wellbore
04/27/2005CN1609406A Rod sealing packer ring assembly and method for producing the same
04/27/2005CN1199001C Method and equipment for obtaining data from underground rock
04/26/2005US6883610 Straddle packer systems
04/26/2005CA2388664C Well stimulation tool and method of using same
04/26/2005CA2311464C Apparatus for dropping articles downhole
04/21/2005WO2005035633A1 Crosslinked polymer gels for filter cake formation
04/21/2005US20050082832 Seal retainer with metal seal members for undersea hydraulic coupling
04/21/2005US20050082066 Hybrid wellhead system and method of use
04/21/2005US20050081358 Radial expansion of tubular members
04/20/2005EP1019613B1 Downhole packer
04/20/2005CN2693945Y Hydraulic pulse vibrator
04/20/2005CN2693944Y Hydraulic cup packer
04/20/2005CN2693943Y Expanding packer
04/20/2005CN2693942Y Hydraulic compression type packer capable of well cleanup
04/20/2005CN2693941Y Hydraulic compression type hydraulic undet packer capable of well cleanup
04/20/2005CN2693940Y Compression high temperature steam injection packer
04/19/2005US6880642 Well abandonment plug
04/19/2005US6880640 Steel tube flying lead jumper connector
04/19/2005US6880636 Apparatus and method for disconnecting a tail pipe and maintaining fluid inside a workstring
04/19/2005CA2406011C Cup tool for high pressure mandrel
04/19/2005CA2404457C Automatic chemical stick loader for wells and method of loading
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