| 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) |
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| 04/27/2004 | US6725923 Method and device for exciting transversal oscillations of a pipe string in a borehole |
| 04/27/2004 | US6725922 Ramping well bores |
| 04/27/2004 | US6725921 In situ thermal processing of a coal formation by controlling a pressure of the formation |
| 04/27/2004 | US6725920 In situ thermal processing of a hydrocarbon containing formation to convert a selected amount of total organic carbon into hydrocarbon products |
| 04/27/2004 | US6725919 Forming a wellbore casing while simultaneously drilling a wellbore |
| 04/27/2004 | US6725918 Expandable liner and associated methods of regulating fluid flow in a well |
| 04/27/2004 | US6725917 Downhole apparatus |
| 04/27/2004 | US6725916 Plunger with flow passage and improved stopper |
| 04/27/2004 | CA2311256C Wellhead platform for the operation of arctic oil fields |
| 04/27/2004 | CA2098269C Device method for pumping viscous liquid from horizontal wells, including by injecting a liquefying product |
| 04/22/2004 | WO2004034089A2 Borehole conductivity profiler |
| 04/22/2004 | WO2004033851A1 Method and system for removing fluid from a subterranean zone using an enlarged cavity |
| 04/22/2004 | WO2004033850A1 Methods and apparatus for a subsea tie back |
| 04/22/2004 | WO2004033849A1 Hydraulic stepping valve actuated sliding sleeve |
| 04/22/2004 | WO2004022911A3 Wellbore device for selective transfer of fluid |
| 04/22/2004 | WO2003016671A3 High power umbilicals for subterranean electric drilling machines and remotely operated vehicles |
| 04/22/2004 | US20040074838 Desanding apparatus and system |
| 04/22/2004 | US20040074649 Method of drilling and operating a subsea well |
| 04/22/2004 | US20040074642 Expandable completion system and method |
| 04/22/2004 | US20040074641 Gravel packing apparatus having an integrated joint connection and method for use of same |
| 04/22/2004 | US20040074640 Method and apparatus |
| 04/22/2004 | US20040074638 Electromagnetic coal seam gas recovery system |
| 04/22/2004 | US20040074636 Flow completion system |
| 04/22/2004 | US20040074635 Central circulation completion system |
| 04/22/2004 | US20040074390 A downhole liquid and gas separator system has a pump, a separator and a motor, and a shroud around the pump, separator and motor. The shroud has a lower impermeable portion with a closed lower end and an upper porous portion. The upper end of |
| 04/22/2004 | CA2501315A1 Methods and apparatus for a subsea tie back |
| 04/21/2004 | EP1409840A1 Discharging sand from a vessel at elevated pressure |
| 04/21/2004 | EP1409839A1 Method and apparatus for detonating an explosive charge |
| 04/21/2004 | EP1409834A2 Slugging control |
| 04/21/2004 | CN2612821Y Oil-well pump seizure proof faner apparatus |
| 04/21/2004 | CN2612820Y Sand-resistant oil-well pump |
| 04/21/2004 | CN2612794Y Double acting throwing casting and dragging equipment |
| 04/21/2004 | CN1491315A Modelling method of reservoir stimulation treatment |
| 04/21/2004 | CN1491314A Method for controlling fluid flow into oil and/or gas production well |
| 04/21/2004 | CN1491313A Seashore and seabed connecting apparatus for laying underwater pipelines in great depth |
| 04/20/2004 | US6723158 Gas separator improvements |
| 04/20/2004 | US6722451 Casing while drilling |
| 04/20/2004 | US6722443 Connector for expandable well screen |
| 04/20/2004 | US6722441 Threaded apparatus for selectively translating rotary expander tool downhole |
| 04/20/2004 | US6722440 Multi-zone completion strings and methods for multi-zone completions |
| 04/20/2004 | US6722438 Method and apparatus for formation damage removal |
| 04/20/2004 | US6722437 Technique for fracturing subterranean formations |
| 04/20/2004 | US6722433 Methods of sealing expandable pipe in well bores and sealing compositions |
| 04/20/2004 | US6722431 In situ thermal processing of hydrocarbons within a relatively permeable formation |
| 04/20/2004 | US6722430 In situ thermal processing of a coal formation with a selected oxygen content and/or selected O/C ratio |
| 04/20/2004 | US6722429 In situ thermal processing of a hydrocarbon containing formation leaving one or more selected unprocessed areas |
| 04/20/2004 | US6722428 Apparatus for suspending a pipe within a well casing |
| 04/20/2004 | US6722427 Wear-resistant, variable diameter expansion tool and expansion methods |
| 04/20/2004 | US6722424 Hydraulic firing head |
| 04/20/2004 | CA2280079C Enhanced oil recovery method |
| 04/16/2004 | CA2406305A1 Variable sized slotted pipe insert for screening of sedimentary waste in collection of hydrocarbons and water |
| 04/15/2004 | WO2004031532A1 Mono-trip well completion |
| 04/15/2004 | WO2004031529A2 Cementing through a side pocket mandrel |
| 04/15/2004 | WO2004031527A2 Appartus and methods for installing casing in a borehole |
| 04/15/2004 | WO2004020895A3 Method of manufacturing an insulated pipeline |
| 04/15/2004 | WO2004007892A3 Expansion method |
| 04/15/2004 | WO2003029609A9 Tubular expansion apparatus and method |
| 04/15/2004 | US20040071557 Well jet device |
| 04/15/2004 | US20040069499 Mono-diameter wellbore casing |
| 04/15/2004 | US20040069498 Method of jointing and running expandable tubulars |
| 04/15/2004 | US20040069497 Actuator control system for hydraulic devices |
| 04/15/2004 | US20040069495 Annulus pressure control system for subsea wells |
| 04/15/2004 | US20040069494 Method and arrangement for treatment of fluid |
| 04/15/2004 | US20040069491 Hydraulic stepping valve actuated sliding sleeve |
| 04/15/2004 | US20040069489 Gravel pack crossover tool with check valve in the evacuation port |
| 04/15/2004 | US20040069486 In situ thermal processing of a coal formation and tuning production |
| 04/15/2004 | CA2499727A1 Appartus and methods for installing casing in a borehole |
| 04/15/2004 | CA2445126A1 Expandable systems that facilitate desired fluid flow |
| 04/14/2004 | EP1407806A1 Screen with controlled pressure drop |
| 04/14/2004 | EP1407113A1 Wellbore system with annular seal member |
| 04/14/2004 | EP1149225B1 Method for creating secondary sidetracks in a well system |
| 04/14/2004 | CN2611633Y Breaking-proof upper oil output valve |
| 04/14/2004 | CN2611629Y Standing valve salvagable oil-well pump |
| 04/14/2004 | CN2611601Y Layering quantitative steam injection pipe string |
| 04/14/2004 | CN2611600Y Downhole polymer injection distributer |
| 04/14/2004 | CN2611599Y Gas/liquid matcher |
| 04/14/2004 | CN2611598Y Insertion sealed water injection allocator |
| 04/14/2004 | CN2611597Y Auto-controlled multi-layer water injection wellhead |
| 04/14/2004 | CN2611596Y Well pipe string guide diverter |
| 04/14/2004 | CN2611595Y Layering pumping unit |
| 04/14/2004 | CN2611594Y Electric/gas double-controlled safety cut-off device for high pressure hydrocarbon wellhead |
| 04/14/2004 | CN2611593Y Composite perforation sand proof device of oil well |
| 04/14/2004 | CN2611592Y Energy saving hydraulic mixed transferring appts. for production station |
| 04/14/2004 | CN2611591Y Protector for preventing pumping unit from overturning |
| 04/14/2004 | CN2611590Y Time rate monitor of pumping unit |
| 04/14/2004 | CN2611589Y Vertical nano aboveground pumping unit |
| 04/14/2004 | CN2611588Y Tail balancer of pumping unit |
| 04/14/2004 | CN2611587Y Self-cleaning wellbore and proof device for submersible pump |
| 04/14/2004 | CN1488837A Wax-bearing low-seepage oil deposit steam injection heating recovery method |
| 04/14/2004 | CN1145741C Technology for removing stratum blocking of oil well or water injection well |
| 04/14/2004 | CN1145684C Cleaning compositions for oil and gas well, lines, casings, formations and equipment and its methods of use |
| 04/14/2004 | CN1145520C Apparatus and method for reducing oxygen-content in waste gas of boiler |
| 04/13/2004 | US6719064 Expandable completion system and method |
| 04/13/2004 | US6719060 Plunger lift separation and cycling |
| 04/13/2004 | US6719056 Sand removal method |
| 04/13/2004 | US6719054 Pumping acid and gas to generate foam |
| 04/13/2004 | US6719051 Sand control screen assembly and treatment method using the same |
| 04/13/2004 | US6719048 Separation of oil-well fluid mixtures |
| 04/13/2004 | US6719047 In situ thermal processing of a hydrocarbon containing formation in a hydrogen-rich environment |
| 04/13/2004 | CA2241027C Method and apparatus to isolate a formation zone |