| 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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| 05/01/2002 | CN2489094Y Device separating and collecting reverse flow of well liquid |
| 05/01/2002 | CN2489093Y Sand prevention liner tube made from sintered metal fiber |
| 04/30/2002 | US6378625 Perforating gun |
| 04/30/2002 | US6378611 Procedure and device for treating well perforations |
| 04/30/2002 | US6378610 Communicating with devices positioned outside a liner in a wellbore |
| 04/30/2002 | US6378609 Universal washdown system for gravel packing and fracturing |
| 04/30/2002 | US6378608 Apparatus and method for separating oil, water and solids |
| 04/30/2002 | US6378607 Method and system for oriented perforating in a well with permanent sensors |
| 04/30/2002 | US6378362 In-situ Vadose zone remote sensor |
| 04/30/2002 | CA2049627C Recovering hydrocarbons from hydrocarbon bearing deposits |
| 04/25/2002 | WO2002033218A1 Method and arrangement for treatment of fluid |
| 04/25/2002 | WO2002033217A1 Device for performing hydrodynamic action on wellbore walls |
| 04/25/2002 | WO2002033212A1 Cement shoe assembly for monobore well |
| 04/25/2002 | WO2002032634A2 Fluid cutting tool and method for cutting tubular member with a jet of fluid |
| 04/25/2002 | WO2001081715A3 Method and system for treating a hydrocarbon containing formation |
| 04/25/2002 | US20020049360 In situ thermal processing of a hydrocarbon containing formation to produce a mixture including ammonia |
| 04/25/2002 | US20020049358 Heat sources heat a portion of the coal formation to temperatures that allow pyrolysis of the hydrocarbons; controlling temperature and pressure to yield improved products from the formation |
| 04/25/2002 | US20020048676 Low density composite proppant, filtration media, gravel packing media, and sports field media, and methods for making and using same |
| 04/25/2002 | US20020048518 Method of compressing gaseous hydrocarbon-containing medium |
| 04/25/2002 | US20020048135 Micro-switches for downhole use |
| 04/25/2002 | US20020046883 In situ thermal processing of a coal formation using pressure and/or temperature control |
| 04/25/2002 | US20020046845 Hydraulic actuator |
| 04/25/2002 | US20020046843 Hydraulic actuator |
| 04/25/2002 | US20020046840 Expandanble tubing and method |
| 04/25/2002 | US20020046839 In situ thermal processing of a coal formation to produce hydrocarbon fluids and synthesis gas |
| 04/25/2002 | US20020046838 One or more heat sources used to heat a portion of the hydrocarbon containing formation to temperature that allow pyrolysis of hydrocarbons to yield a mixture of relatively high quality hydrocarbon product such as synthesis gas et. |
| 04/25/2002 | US20020046837 In situ thermal processing of a hydrocarbon containing formation with a selected oxygen content |
| 04/25/2002 | US20020046834 Hydraulic actuator |
| 04/25/2002 | US20020046832 In situ thermal processing of a hydrocarbon containing formation to convert a selected amount of total organic carbon into hydrocarbon products |
| 04/25/2002 | CA2756623A1 Cement shoe assembly for monobore well |
| 04/25/2002 | CA2324319A1 Hydraulic submersible insert rotary pump and drive assembly |
| 04/24/2002 | EP1198659A1 System for improving coalbed gas production |
| 04/24/2002 | EP1198275A1 Breaking of oil/water emulsion |
| 04/24/2002 | CN2487888Y Separate loading oil-well pump |
| 04/24/2002 | CN2487868Y Integrated device for distributing metering and regulating in thickened oil filling steam process |
| 04/24/2002 | CN2487867Y In well flow regulator for filling water of oil field by layer |
| 04/24/2002 | CN1346422A Method for annalar sealing |
| 04/24/2002 | CN1346421A Well screen having an internal alternate flowpath |
| 04/24/2002 | CN1346018A Self-starting type oil pumping machine |
| 04/24/2002 | CN1346012A Visco-elastic low tension chemical oil displacement method for raising crude oil productivity |
| 04/24/2002 | CN1345668A Downhole hydraulic gearing oil production and apparatus thereof |
| 04/24/2002 | CN1083524C Automatic controlling instrument for mechanical oil well |
| 04/23/2002 | US6375389 Method for fitting drainage devices into the soil, and drainage pipes for carrying out said method |
| 04/23/2002 | US6374918 In-tubing wellbore sidetracking operations |
| 04/23/2002 | CA2153255C Method for installing a gravel pack completion adjacent a formation in a well |
| 04/18/2002 | WO2002031315A1 Expandable lockout for a subsurface safety valve |
| 04/18/2002 | WO2002031314A1 Drain element comprising a liner consisting of hollow rods for collecting in particular hydrocarbons |
| 04/18/2002 | WO2002031311A2 Gas operated pump for use in a wellbore |
| 04/18/2002 | WO2002031310A2 Apparatus and method for controlling a fluid flow in a wellbore |
| 04/18/2002 | WO2002031309A2 Methods and apparatus for separating fluids |
| 04/18/2002 | WO2002030611A1 A method for interconnecting adjacent expandable pipes |
| 04/18/2002 | WO2001087453A3 Separating a stream containing a multi-phase mixture of lighter and heavier density liquids and particles |
| 04/18/2002 | US20020045553 In situ thermal processing of a hycrocarbon containing formation using heat transfer from a heat transfer fluid to heat the formation |
| 04/18/2002 | US20020043507 Removing solids from a hydrocarbon production stream |
| 04/18/2002 | US20020043405 In situ thermal processing of a coal formation to produce hydrocarbons having a selected carbon number range |
| 04/18/2002 | US20020043370 Evaluation of reservoir and hydraulic fracture properties in multilayer commingled reservoirs using commingled reservoir production data and production logging information |
| 04/18/2002 | US20020043369 Petroleum well having downhole sensors, communication and power |
| 04/18/2002 | US20020043367 In situ thermal processing of a hydrocarbon containing formation to increase a permeability of the formation |
| 04/18/2002 | US20020043366 In situ thermal processing of a coal formation and ammonia production |
| 04/18/2002 | US20020043365 In situ thermal processing of a coal formation with a selected ratio of heat sources to production wells |
| 04/17/2002 | EP1197663A1 Method for compressing a hydrocarbon-containing gaseous medium |
| 04/17/2002 | EP1197633A1 Open-hole test method and apparatus for subterranean wells |
| 04/17/2002 | EP1078022A4 Injection molded degradable casing perforation ball sealers |
| 04/17/2002 | EP0865562B1 Tubing connector |
| 04/17/2002 | CN2486738Y High viscosity oil hot water circulation pipe string |
| 04/17/2002 | CN2486737Y Ball cock gas lift downhole gas and liquid mixer |
| 04/17/2002 | CN2486736Y Specific bullet for sandwich gun |
| 04/17/2002 | CN2486735Y Centering adjuster of well pumping unit |
| 04/17/2002 | CN1344858A Anti-pollution protecting method and device for sandwiched perforating gun |
| 04/16/2002 | US6372135 Polyetherurethane copolymer binder containing an organotin catalyst and a mixture of highly dispersed silica and/or bentonites with a thickened aluminosilicate modifier; production of drinking water from ground water in surface |
| 04/16/2002 | US6371487 Gimbal and seal for the drivehead of a downhole rotary pump |
| 04/16/2002 | US6371219 Oilwell perforator having metal loaded polymer matrix molded liner and case |
| 04/16/2002 | US6371210 Flow control apparatus for use in a wellbore |
| 04/16/2002 | US6371208 Variable downhole choke |
| 04/16/2002 | US6371206 Prevention of sand plugging of oil well pumps |
| 04/16/2002 | US6371203 Method of creating a wellbore in an underground formation |
| 04/11/2002 | WO2002029210A1 Draining network for producing oil |
| 04/11/2002 | WO2002029209A1 Method and device to stabilise the production of oil wells |
| 04/11/2002 | WO2002029208A1 Method and system for increasing tubing resistance to pressure |
| 04/11/2002 | WO2002029207A1 Method and system for tubing a borehole in single diameter |
| 04/11/2002 | WO2002029206A1 Gimbaled table riser support system |
| 04/11/2002 | WO2002029199A1 Method and apparatus for casing expansion |
| 04/11/2002 | WO2002029197A2 Auto adjusting well control system |
| 04/11/2002 | WO2002029195A2 Production optimization for multilayer commingled reservoirs |
| 04/11/2002 | WO2002028560A2 Method and apparatus for expansion sealing concentric tubular structures |
| 04/11/2002 | US20020041807 Carbon dioxide pump, pumping system, and method of controlling the same |
| 04/11/2002 | US20020040788 Expandable lockout apparatus for a subsurface safety valve and method of use |
| 04/11/2002 | US20020040787 Forming a wellbore casing while simultaneously drilling a wellbore |
| 04/11/2002 | US20020040785 Gas operated pump for use in a wellbore |
| 04/11/2002 | US20020040784 Method and device to stabilize the production of oil wells |
| 04/11/2002 | US20020040782 Subsea intervention |
| 04/11/2002 | US20020040781 In situ thermal processing of a hydrocarbon containing formation using substantially parallel wellbores |
| 04/11/2002 | US20020040780 In situ thermal processing of a hydrocarbon containing formation to produce a selected mixture |
| 04/11/2002 | US20020040779 In situ thermal processing of a hydrocarbon containing formation to produce a mixture containing olefins, oxygenated hydrocarbons, and/or aromatic hydrocarbons |
| 04/11/2002 | US20020040778 In situ thermal processing of a hydrocarbon containing formation with a selected hydrogen content |
| 04/11/2002 | CA2595540A1 Method and apparatus for casing expansion |
| 04/11/2002 | CA2430243A1 Method and system for increasing tubing resistance to pressure |
| 04/11/2002 | CA2430240A1 Method and system for tubing a borehole in single diameter |
| 04/11/2002 | CA2419806A1 Method and apparatus for casing expansion |
| 04/10/2002 | EP1194679A1 Method and system for testing a borehole by the use of a movable plug |