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)
05/2003
05/13/2003US6561521 Metal-to-metal seal with soft metal insert
05/13/2003US6561276 Bore selector
05/13/2003US6561275 Apparatus for controlling fluid flow in a conduit wall
05/13/2003US6561271 Hanging liners by pipe expansion
05/13/2003US6561270 Plug and plug set for use in wellbore
05/13/2003US6561269 Canister, sealing method and composition for sealing a borehole
05/13/2003CA2156977C Improved methods and systems for subterranean multilateral well drilling and completion
05/13/2003CA2063877C Aqueous gellable composition with delayed gelling time
05/13/2003CA2063876C Aqueous gellable composition, useful for modifying the permeability of a petroleum reservoir
05/08/2003WO2003038235A1 Deflation latch system for packers
05/08/2003WO2003038234A1 Completion device for an installation that is used to exploit underground fluids
05/08/2003WO2002027137A9 Well sealing method and apparatus
05/08/2003US20030085040 Mounts for blowout preventer bonnets
05/07/2003CN2549171Y Casing with external adhered sand layer
05/07/2003CN2549170Y 双通道剪销封隔器 Dual shear pin packer
05/07/2003CN2549169Y Dual straightening polishing rod sealer
05/07/2003CN1416499A Method and appts. for stimulation of multiple formation intervals
05/06/2003US6558081 Composite particles and methods for their application and implementation
05/06/2003US6557644 Adjustable tubing hanger assembly
05/06/2003US6557640 Lubrication and self-cleaning system for expansion mandrel
05/06/2003US6557638 Concentric tubing completion system
05/06/2003US6557629 Wellhead isolation tool
05/06/2003CA2055437C Device for protecting wells from corrosion or deposits caused by the nature of the fluid produced or located therein
05/02/2003EP1305501A1 Method for treating multiple wellbore intervals
05/02/2003EP1305500A2 Packer, setting tool for a packer and method for setting a packer
05/02/2003EP0848784B1 Expandable retrievable bridge plug
05/02/2003EP0801704B1 Method for injecting fluid into a wellbore
05/01/2003WO2003036018A2 Downhole actuator and tool
05/01/2003WO2003035793A1 Drilling fluids
05/01/2003US20030080516 Fluid seal and method of using same
05/01/2003US20030080515 Sealing system and method
05/01/2003US20030079887 High pressure sealing apparatus and method
05/01/2003US20030079881 Deepwater intervention system
05/01/2003CA2463610A1 Device for performing a downhole operation
04/2003
04/30/2003CN2547868Y Multifunctional anchored hole-sealing device
04/30/2003CN2547867Y Improved pumping unit aligning packing box leakage-proofing structure
04/30/2003CN2547866Y Long-life energy-saving pumping-well head polish rod sealing apparatus
04/30/2003CN1414209A Oil-water well composite sand prevention method
04/29/2003WO2002037005A1 Manual control device
04/29/2003US6554324 Apparatus and method for connecting tubular members
04/29/2003US6554247 Quick release blowout preventer bonnet
04/29/2003US6554076 Hydraulically activated selective circulating/reverse circulating packer assembly
04/29/2003US6554073 Method and apparatus for removing wellhead assemblies
04/29/2003US6554070 Fluid sealing system comprising a particulate material and a bonding agent comprising an alcohol-acid suspension of nanoparticles
04/29/2003US6554068 Method of downhole fluid separation and displacement and a plug utilized therein
04/29/2003US6554062 Anchor apparatus and method
04/29/2003US6554016 Rotating blowout preventer with independent cooling circuits and thrust bearing
04/29/2003CA2427358A1 Manual control device
04/28/2003WO2002036933A1 Blowout valve assembly
04/28/2003CA2427173A1 Blowout valve assembly
04/24/2003WO2003033868A1 Single well development system
04/24/2003WO2002038343A3 Apparatus and methods for separating and joining tubulars in a wellbore
04/24/2003US20030075699 Wireline valve actuator
04/24/2003US20030075342 Packer, setting tool for a packer and method for setting a packer
04/24/2003US20030075341 Packer and method for fixation thereof in a well
04/23/2003EP1303681A1 Well management system
04/23/2003CN2546624Y Compression expanding water filling packer
04/23/2003CN2546623Y Pressure limiting device for packing in the borehole
04/23/2003CN2546622Y 深井密封减压器 Deep seal Regulator
04/23/2003CN2546621Y Oil pumping unit well head packing mounting device
04/23/2003CN2546620Y Anti bias wearing packing box
04/23/2003CN2546619Y Electronic antitheft box used for oil field well head
04/23/2003CN2546618Y Crude oil antitheft box of beam pumping unit
04/22/2003US6550822 Threaded coupling with water exclusion seal system
04/22/2003US6550542 Fluid profile control in enhanced oil recovery
04/22/2003US6550537 Tension latching system
04/17/2003WO2003031771A1 Contractable and expandable tubular wellbore system
04/17/2003WO2003031769A1 Surface deployed cement separation plug
04/17/2003WO2003031768A1 Borehole stabilisation
04/17/2003WO2002035257A9 Clamping well casings
04/17/2003US20030072208 Automated cement mixing system
04/17/2003US20030070840 Method and apparatus for varying the density of drilling fluids in deep water oil drilling applications
04/17/2003US20030070810 Hanging liners by pipe expansion
04/17/2003US20030070802 Drillpipe sub
04/17/2003CA2462866A1 Surface deployed cement separation plug
04/16/2003EP1301684A1 Resettable downhole packer
04/16/2003EP0858550B1 Sampling device
04/16/2003CN2545361Y Hydraulic driven rotary oil pipe wellhead device
04/16/2003CN2545360Y Electric pump wellhead sealing device
04/16/2003CN2545359Y Theftproof collar clamp for oil production wellhead
04/16/2003CN2545358Y Pressure release type wellhead theftproofing device
04/16/2003CN1410650A Single stage double sealing well cementation method
04/15/2003US6547011 Method and apparatus for controlling fluid flow within wellbore with selectively set and unset packer assembly
04/15/2003US6547009 Low profile static wellhead plug
04/15/2003US6547008 Well operations system
04/15/2003US6547002 High pressure rotating drilling head assembly with hydraulically removable packer
04/10/2003WO2003029607A1 Mono-diameter wellbore casing
04/10/2003WO2003029603A1 Wellbore system for simultaneous drilling and production
04/10/2003WO2003029600A2 Cementing system for wellbores
04/10/2003US20030066687 Annular pressure spool
04/10/2003US20030066656 Concentric casing jack
04/10/2003US20030066655 Apparatus for coupling a tubular member to a preexisting structure
04/10/2003US20030066651 Apparatus and methods for flow control gravel pack
04/10/2003US20030066650 Drilling system and method for controlling equivalent circulating density during drilling of wellbores
04/10/2003US20030066648 Surface deployed cement separation plug
04/10/2003US20030066640 Method and apparatus for injecting one or more fluids into a borehole
04/10/2003CA2462756A1 Mono-diameter wellbore casing
04/09/2003EP1300545A1 Borehole stabilisation
04/09/2003EP1300544A1 Concentric casing jack
04/09/2003EP1299616A1 Deformable member
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