| 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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| 09/12/2002 | US20020125009 Intelligent well system and method |
| 09/12/2002 | US20020125008 Intelligent well system and method |
| 09/12/2002 | US20020125007 Apparatus and method for gravel packing an interval of a wellbore |
| 09/12/2002 | US20020125006 Apparatus and method for gravel packing an interval of a wellbore |
| 09/12/2002 | US20020125005 Tubing conveyed fracturing tool and method |
| 09/11/2002 | CN2510623Y Quantitative water choke |
| 09/11/2002 | CN2510622Y Electric pump sand-catching apparatus |
| 09/11/2002 | CN1369032A Drilling and completion system for multilateral wells |
| 09/11/2002 | CN1368593A Multifunctional oil increasing controller |
| 09/10/2002 | US6447021 Locking telescoping joint for use in a conduit connected to a wellhead |
| 09/10/2002 | US6446946 Polish rod spring II |
| 09/10/2002 | US6446736 Non-rotating sensor assembly for measurement-while-drilling applications |
| 09/10/2002 | US6446729 Sand control method and apparatus |
| 09/10/2002 | US6446727 Process for hydraulically fracturing oil and gas wells |
| 09/10/2002 | US6446726 Wellbore and formation heating system and method |
| 09/10/2002 | US6446724 Hanging liners by pipe expansion |
| 09/10/2002 | US6446722 Methods for completing wells in unconsolidated subterranean zones |
| 09/10/2002 | US6446720 Methods of downhole testing subterranean formations and associated apparatus therefor |
| 09/10/2002 | US6446719 Methods of downhole testing subterranean formations and associated apparatus therefor |
| 09/10/2002 | US6446323 Profile formation |
| 09/06/2002 | WO2002068794A1 Downhole pump |
| 09/06/2002 | WO2002068792A1 Mono-diameter wellbore casing |
| 09/06/2002 | WO2002068788A2 Well pumping unit driven by linear motor |
| 09/06/2002 | WO2002046577B1 Method, computer program prodcut and use of a computer program for stabilizing a multiphase flow |
| 09/06/2002 | WO2002035061A3 Method and pumping out means for improving the supply of water to a source or a water procurement well |
| 09/06/2002 | WO2002010546A3 Method and apparatus for formation damage removal |
| 09/05/2002 | US20020121376 Well completion with cable inside a tubing and gas venting through the tubing |
| 09/05/2002 | US20020121375 Apparatus and method for completing a junction of plural wellbores |
| 09/05/2002 | US20020121374 Method for heating subterranean formation, particularly for heating reservoir fluids in near well bore zone |
| 09/05/2002 | US20020121372 Isolation of subterranean zones |
| 09/05/2002 | US20020121371 Fluid property sensors and associated methods of calibrating sensors in a subterranean well |
| 09/05/2002 | US20020121367 Well tubing rotator |
| 09/05/2002 | US20020121366 Induction choke for power distribution in piping structure |
| 09/04/2002 | EP1235973A1 Wellbore system having non-return valve |
| 09/04/2002 | EP1235972A1 Pipe expansion device |
| 09/04/2002 | EP1109974A4 Well riser lateral restraint and installation system for offshore platform |
| 09/04/2002 | CN2509320Y Special sand filter |
| 09/04/2002 | CN1367306A Solid propping agent and its preparation method |
| 09/04/2002 | CN1367305A Intelligent driving device for well pumping unit |
| 09/04/2002 | CN1367304A Method for testing balance of well pumping unit and its equipment |
| 09/03/2002 | US6446014 Method and apparatus for measuring and controlling the flow of fluids from coal seam gas wells |
| 09/03/2002 | US6443245 Non-cryogenic nitrogen for on-site downhole drilling and post drilling operations |
| 09/03/2002 | US6443240 Dual riser assembly, deep water drilling method and apparatus |
| 09/03/2002 | US6443229 Method and system for extraction of liquid hydraulics from subterranean wells |
| 09/03/2002 | US6443227 Azimuth control of hydraulic vertical fractures in unconsolidated and weakly cemented soils and sediments |
| 09/03/2002 | CA2179951C Fracturing and propping a formation using a downhole slurry splitter |
| 09/03/2002 | CA2074022C Sand control with resin and explosive |
| 08/29/2002 | WO2002066814A2 Regenerative combustion device |
| 08/29/2002 | WO2002066789A1 Modeling of reservoir stimulation treatment |
| 08/29/2002 | WO2002066788A1 Fluid flow control apparatus |
| 08/29/2002 | WO2002066787A1 Method for controlling fluid flow into an oil and/or gas production well |
| 08/29/2002 | WO2002066786A1 Seafloor-surface connecting installation of a submarine pipeline installed at great depth |
| 08/29/2002 | WO2002066783A1 Mono-diameter wellbore casing |
| 08/29/2002 | WO2000014378A9 Gas impulse device and method of use thereof |
| 08/29/2002 | US20020117304 Well screen cover |
| 08/29/2002 | US20020117303 Production of synthesis gas from a hydrocarbon containing formation |
| 08/29/2002 | US20020117302 Method for consolidation of sand formations using nanoparticles |
| 08/29/2002 | US20020117301 Single trip, multiple zone isolation, well fracturing system |
| 08/29/2002 | US20020117297 Method and system for accessing subterranean zones from a limited surface area |
| 08/28/2002 | EP1234100A2 Production valve |
| 08/28/2002 | EP1234099A1 Downhole pulser |
| 08/28/2002 | EP1234094A1 Creating multiple fractures in an earth formation |
| 08/28/2002 | EP1234092A2 Ceramic components for high pressure oil wells |
| 08/28/2002 | EP1234090A2 Pipe connecting method |
| 08/28/2002 | EP1069957B1 Separator inlet |
| 08/28/2002 | CN2508058Y Speed controlling motor-hydraulic-gear combined drive device for pumping unit |
| 08/28/2002 | CN2508021Y Secondary suction load-reducing oil pump |
| 08/28/2002 | CN2507997Y Automatic dosing apparatus for oil well |
| 08/28/2002 | CN2507996Y Water nozzle of water injection separate injection device |
| 08/28/2002 | CN2507995Y Integral microcomputerized oil well monitoring device |
| 08/28/2002 | CN2507994Y Drum type pumping unit |
| 08/28/2002 | CN1366137A Energy-saving efficient petroleum recovering for automatic digital petroleum recovering machine |
| 08/28/2002 | CN1366128A Gas-water separation method for geothermal water |
| 08/28/2002 | CN1089846C Solid phase stable emulsion, process for producing hydrocarbon from emulsion and its preparing process |
| 08/27/2002 | US6442105 Acoustic transmission system |
| 08/27/2002 | US6440033 Gearbox assembly for deep oil well pumps |
| 08/27/2002 | US6439320 Wellbore pattern for uniform access to subterranean deposits |
| 08/27/2002 | US6439313 Downhole machining of well completion equipment |
| 08/27/2002 | US6439312 Apparatus and methods for isolating a wellbore junction |
| 08/27/2002 | US6439311 Method of retarding sand build up in heavy oil wells |
| 08/27/2002 | US6439310 Real-time reservoir fracturing process |
| 08/27/2002 | US6439121 Perforating charge carrier and method of assembly for same |
| 08/22/2002 | WO2002064944A1 Crossover housing for gas lift valve |
| 08/22/2002 | WO2002064943A1 Transducers, and methods of producing transducers, with cryogenically treated transducer members |
| 08/22/2002 | US20020112338 Profile formation |
| 08/21/2002 | EP1232330A1 Method and apparatus for seismic stimulation of fluid-bearing formations |
| 08/21/2002 | CN2506770Y Shell pipe conveying gas press cracking pipe column |
| 08/21/2002 | CN2506769Y Screen casing type ceramic sand filtering pipe |
| 08/21/2002 | CN2506768Y Moving balance walking beam sucking machine |
| 08/21/2002 | CN1089399C Efficient gas pressure-cracking method |
| 08/20/2002 | US6435838 Fluid well pump |
| 08/20/2002 | US6435771 Method for attaching subsea manifold to pipeline tee |
| 08/20/2002 | US6435281 Invisible liner |
| 08/20/2002 | US6435278 Firing head/perforating gun latching system and associated methods |
| 08/20/2002 | US6435216 Choke restrictor devices and methods |
| 08/20/2002 | US6435096 Method and apparatus for controlled small-charge blasting by decoupled explosive |
| 08/20/2002 | CA2372287A1 Method and apparatus for connecting a main well bore and a lateral branch |
| 08/20/2002 | CA2234920C Safety coupling for rotary pump |
| 08/15/2002 | WO2002063135A1 A method and a sea-based installation for hydrocarbon processing |
| 08/15/2002 | WO2002063134A1 Oil well perforator |