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 43 - Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
Patents for E21B 43 - Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells (64,186)
05/2003
05/22/2003WO2003042488A2 Deepwater slim hole well construction
05/22/2003WO2003042487A2 Mono diameter wellbore casing
05/22/2003WO2003042486A2 Collapsible expansion cone
05/22/2003WO2003041838A1 Method and apparatus for collecting and then disposing sand contained in production fluid
05/22/2003WO2003008755A3 Wear resistant tubular connection
05/22/2003WO2003004819A3 Liner hanger
05/22/2003WO2002086277A3 Method for enhancing production allocation in an integrated reservoir and surface flow system
05/22/2003WO2002077124A3 Integrated bitumen production and gas conversion
05/22/2003WO2001083940A9 Electrical well heating system and method
05/22/2003US20030094284 Internal connection of tree to wellhead housing
05/22/2003US20030094283 Device for flow and liftgas production of oil-wells (versions)
05/22/2003US20030094279 Method of selecting tubular members
05/22/2003US20030094278 Expansion cone for radially expanding tubular members
05/22/2003US20030094277 Expansion cone for radially expanding tubular members
05/22/2003CA2467381A1 Mono diameter wellbore casing
05/21/2003EP1312750A2 Method and apparatus for selective horizontal well re-entry using retrievable diverter oriented by logging means
05/21/2003EP1311741A1 Method and well tool for gravel packing a well using low viscosity fluids
05/21/2003CN2551766Y Constant voltage triggering pulse unblocking device
05/21/2003CN2551765Y Pressure operator for water injection well
05/21/2003CN2551764Y Filtering complement screen pipe
05/21/2003CN2551763Y Sea water injection pipeline compensator
05/21/2003CN1419677A Integrated reservoir optimization
05/21/2003CN1419052A Method for making environment protection type stainless steel oil pump
05/21/2003CN1419037A Mine gasified furnace
05/21/2003CN1419036A Coal layer loosening technology for underground gasified furnace
05/21/2003CN1419035A Microbe oil extraction method
05/20/2003US6567013 Digital hydraulic well control system
05/20/2003US6564876 Packer
05/20/2003US6564875 Protective device for threaded portion of tubular member
05/20/2003US6564874 Technique for facilitating the pumping of fluids by lowering fluid viscosity
05/20/2003US6564870 Method and apparatus for completing wells with expanding packers for casing annulus formation isolation
05/20/2003US6564868 Cutting tool and method for cutting tubular member
05/20/2003US6564867 Method and apparatus for cementing branch wells from a parent well
05/20/2003US6564866 Method and apparatus for a tubing conveyed perforating guns fire identification system using enhanced marker material
05/20/2003US6564865 Oil and gas production with downhole separation and reinjection of gas
05/20/2003US6564619 Multiphase flow measurement system
05/16/2003CA2363183A1 Production tool
05/15/2003WO2003040531A1 Gas turbine system comprising closed system between fuel and combustion gas using underground coal layer
05/15/2003WO2003040519A1 Well screen assembly
05/15/2003WO2003040518A1 Method of gravel packing a branch wellbore
05/15/2003WO2003040513A2 In situ thermal processing of a hydrocarbon containing formation
05/15/2003WO2003039705A1 Flow conditioning apparatus and separation systems and methods for using the same
05/15/2003US20030089505 Downhole surge pressure reduction and filtering apparatus
05/15/2003US20030089504 Gun brake device
05/15/2003US20030089503 Wellscreen having helical support surface
05/15/2003US20030089498 Controlling transient underbalance in a wellbore
05/15/2003US20030089496 Expandable completion system and method
05/15/2003US20030089495 Sand screen
05/15/2003CA2804805A1 Well screen assembly
05/15/2003CA2663866A1 Well screen assembly
05/14/2003EP1309771A1 Method for secondary oil recovery
05/14/2003CN2550502Y Self sealing type liquid blending stirrer for viscous crude well
05/14/2003CN2550501Y Mixed gas injection device for petroleum thermal recovery
05/14/2003CN2550500Y Three hole liquid drain device
05/14/2003CN2550499Y Double layer double trapezoid spacer seam screen pipe for oil well
05/14/2003CN2550498Y Self balance electromechanical integrated intelligent oil pump unit of driven well rope wheel interactive
05/14/2003CN2550497Y Curved walking beam oil pump unit driven by pulley unit
05/14/2003CN2550496Y Oil pipe transport jet hole and production on-line operation pipe string
05/14/2003CN2550493Y Hydraulic impact deblocking device for water injection well
05/14/2003CN1418317A Mthod and system for performing operations and for improving production in wells
05/14/2003CN1418283A Filter cake cleanup and gravel pack methods for oil based or water based drilling fluids
05/14/2003CN1417914A Automatic control protector for motor of pumping unit in intermittent work mode
05/14/2003CN1417473A Plunger protecting jacket for pipe-type oil pump
05/13/2003US6564011 Self-regulating heat source for subsea equipment
05/13/2003US6562764 Invert well service fluid and method
05/13/2003US6561735 Well riser lateral restraint and installation system for offshore platform
05/13/2003US6561288 Method and system for accessing subterranean deposits from the surface
05/13/2003US6561279 Method and apparatus for completing a wellbore
05/13/2003US6561277 Flow control in multilateral wells
05/13/2003US6561274 Combustible fuel cell can be placed in the tubular member below the fluid and ignited to generate gas
05/13/2003US6561272 Technique for deploying a liner into a subterranean wellbore
05/13/2003US6561271 Hanging liners by pipe expansion
05/13/2003US6561227 Wellbore casing
05/13/2003CA2156977C Improved methods and systems for subterranean multilateral well drilling and completion
05/13/2003CA2149812C Treatment of contaminated water in clays etc.
05/09/2003CA2408266A1 Sand screen
05/08/2003WO2003038287A1 Well jet device for testing and studying formations and the operating method thereof
05/08/2003WO2003038237A1 Expandable tubular having improved polished bore receptacle protection
05/08/2003WO2003038234A1 Completion device for an installation that is used to exploit underground fluids
05/08/2003WO2003038233A1 An entry well with slanted well bores and method
05/08/2003WO2003038230A2 Electrochemical process for effecting redox-enhanced oil recovery
05/08/2003WO2003038227A2 Filter train for underground collecting mains and method for introducing said filter train into predetermined layers of soil
05/08/2003US20030085185 Flow conditioning apparatus and separation systems and methods for using the same
05/08/2003US20030085041 Expandable tubular having improved polished bore receptacle protection
05/08/2003US20030085038 Sand screen with integrated sensors
05/08/2003US20030085037 Multilateral open hole gravel pack completion
05/08/2003US20030085036 Combination well kick off and gas lift booster unit
05/08/2003US20030085034 In situ thermal processing of a coal formation to produce pyrolsis products
05/08/2003CA2464105A1 An entry well with slanted well bores and method
05/07/2003EP1307271A2 Separating a stream containing a multi-phase mixture of lighter and heavier density liquuids and particles
05/07/2003CN2549252Y Bush bearing for walking beam oil sucker
05/07/2003CN2549213Y Surface drive unloading spindle of mono-screw rod pump
05/07/2003CN2549212Y Oil producing device of electric oil immersed screw rod pump
05/07/2003CN2549209Y Sand-proof device of oil-pump
05/07/2003CN2549206Y Soft plunger pump against sand deposit
05/07/2003CN2549205Y 抽油泵 Pump
05/07/2003CN2549204Y Deep well oil pump
05/07/2003CN2549178Y Device for preventing injection well from oil invasion
05/07/2003CN2549177Y Energy-saving automatic controller of oil well
05/07/2003CN2549176Y Signal-feedback pumping unit
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