| 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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| 05/11/2006 | US20060096755 Method and system for accessing subterranean deposits from the surface |
| 05/11/2006 | US20060096752 Electroacoustic method and device for stimulation of mass transfer processes for enhanced well recovery |
| 05/11/2006 | CA2586192A1 Safety valve |
| 05/10/2006 | EP1654438A2 Method for natural gas production |
| 05/10/2006 | EP1495209B1 Slotted expandable centraliser |
| 05/10/2006 | CN2779111Y Loose-proof device of crank-pin |
| 05/10/2006 | CN2779110Y Spray-proof device of oil-well pump |
| 05/10/2006 | CN2779109Y Linear engine oil extraction pump |
| 05/10/2006 | CN2779108Y Solid plunger rod type oil-well pump |
| 05/10/2006 | CN2779107Y Motor top arranged type rod-less oil-well pump |
| 05/10/2006 | CN2779062Y Oil-sand separator |
| 05/10/2006 | CN2779061Y Energy-saving gas dewatering device |
| 05/10/2006 | CN2779060Y Direct-reading adjustable stratified water-flood device |
| 05/10/2006 | CN2779059Y Energy gathered bullet composite blast perforation apparatus |
| 05/10/2006 | CN2779058Y Pump combined operation pressure explosion transmission device under underbalanced perforation |
| 05/10/2006 | CN2779057Y Hydraulic link rod transmission well pumping unit |
| 05/10/2006 | CN2779056Y Linear electromagnetic well pumping unit |
| 05/10/2006 | CN2779053Y Continuous chemically water blocking and acidifying matched sealing equipment |
| 05/09/2006 | US7041707 Polyesterether copolymer, where in anionic diacid monomer or diester monomer selected from dimethyl 5-sulfoisophthalate, sulfosuccinic acid, 4-sulfophthalic acid, sulfonaphthalic acid, salts and anhydrides; applied to crude oil processes |
| 05/09/2006 | US7040841 Shallow water riser support |
| 05/09/2006 | US7040405 Permeable cement composition and method for preparing the same |
| 05/09/2006 | US7040404 Using polymer; well completion |
| 05/09/2006 | US7040403 Methods for controlling migration of particulates in a subterranean formation |
| 05/09/2006 | US7040402 Instrumented packer |
| 05/09/2006 | US7040401 Automated plunger catcher and releaser and chemical launcher for a well tubing method and apparatus |
| 05/09/2006 | US7040400 In situ thermal processing of a relatively impermeable formation using an open wellbore |
| 05/09/2006 | US7040399 In situ thermal processing of an oil shale formation using a controlled heating rate |
| 05/09/2006 | US7040398 In situ thermal processing of a relatively permeable formation in a reducing environment |
| 05/09/2006 | US7040397 Thermal processing of an oil shale formation to increase permeability of the formation |
| 05/09/2006 | US7040396 Apparatus for releasably coupling two elements |
| 05/09/2006 | US7040392 Bearing assembly for a progressive cavity pump and system for liquid lower zone disposal |
| 05/09/2006 | US7040391 Low harmonic diode clamped converter/inverter |
| 05/09/2006 | US7040390 Wellbores utilizing fiber optic-based sensors and operating devices |
| 05/09/2006 | US7040018 Radially expandable tubular with supported end portion |
| 05/09/2006 | CA2526054A1 Subsea pumping system |
| 05/09/2006 | CA2425418C Expandable lockout for a subsurface safety valve |
| 05/09/2006 | CA2382686C A hybrid riser configuration |
| 05/09/2006 | CA2350453C Method and apparatus for removing water from well-bore of gas wells to permit efficient production of gas |
| 05/04/2006 | WO2006045248A1 A high-energy gas fracture tool for through-tubing operation |
| 05/04/2006 | WO2005112580A3 System stabilizers and performance enhancers for aqueous fluids gelled with viscoelastic surfactants |
| 05/04/2006 | WO2005098199A3 Clay stabilization in sub-surface formations |
| 05/04/2006 | WO2005024171B1 Expandable tubular |
| 05/04/2006 | US20060094604 Method and biodegradable super absorbent composition for preventing or treating lost circulation |
| 05/04/2006 | US20060090906 Apparatus and method for wellbore isolation |
| 05/04/2006 | US20060090902 Protective sleeve for threaded connections for expandable liner hanger |
| 05/04/2006 | US20060090898 Subsea junction plate assembly running tool and method of installation |
| 05/04/2006 | US20060090896 introducing a completion fluid: water; lts selected from ammonium chloride, sodium chloride/bromide/formate, potassium chloride/formate, calcium chloride/bromide, zinc bromide, and cesium formate; oxygen or nitrogen gas; capryl/capramidopropylbetaine surfactant foaming agent to a subterranean zone |
| 05/04/2006 | US20060090895 Foamed treatment fluids, foaming additives and associated methods |
| 05/04/2006 | US20060090893 Plunger Lift Apparatus That Includes One or More Sensors |
| 05/03/2006 | EP1440220B8 An entry well with slanted well bores and method |
| 05/03/2006 | CN2777243Y Anti eccentrically wear device for oil pumping unit plunger |
| 05/03/2006 | CN2777197Y Completion well sliding casing sand blower |
| 05/03/2006 | CN2777196Y Sealing offset water injection allocator |
| 05/03/2006 | CN2777195Y Perforating bullet sleeve |
| 05/03/2006 | CN2777194Y Oil drainage apparatus used specially for oil-field deep well |
| 05/03/2006 | CN2777193Y Hydraulic seat sealing slip-free heat-resistant packer |
| 05/03/2006 | CN1768191A A wellbore apparatus and method for completion, production and injection |
| 05/03/2006 | CN1768190A Surface flow controlled valve and screen |
| 05/03/2006 | CN1766335A Repair method for improving pumping rod strength |
| 05/03/2006 | CN1766283A Fracturing process in oil and water well by means of biological enzyme preparation |
| 05/03/2006 | CN1766282A Sand-proof hydraulic vibrating apparatus for high density filling |
| 05/03/2006 | CN1766281A Automatic switching three-way circulation joint for oil well |
| 05/03/2006 | CN1765557A Production method of sand-prevention tube and welding equipment |
| 05/03/2006 | CN1254629C Steam production system for oil extraction process and production method thereof |
| 05/02/2006 | US7037105 Heating apparatus for wells |
| 05/02/2006 | US7036600 Technique for deploying expandables |
| 05/02/2006 | US7036597 Placing an uncrosslinked first fluid of carbon dioxide, i nto a subterranean formation at a pressure sufficient to create and extend a fracture therein, placing gravel and crosslinked guars as second fluid, depressurization causes remixing of both fluids, lowers pH of 2nd fluid causing lower viscosity |
| 05/02/2006 | US7036594 Controlling a pressure transient in a well |
| 05/02/2006 | US7036592 High strength particles and methods of their use in subterranean operations |
| 05/02/2006 | US7036591 Low density proppant |
| 05/02/2006 | US7036590 Two stage subterranean zone fracturing fluids and methods |
| 05/02/2006 | US7036589 Methods for fracturing stimulation |
| 05/02/2006 | US7036587 Methods of diverting treating fluids in subterranean zones and degradable diverting materials |
| 05/02/2006 | US7036586 Methods of cementing in subterranean formations using crack resistant cement compositions |
| 05/02/2006 | US7036585 Aqueous viscoelastic fluid |
| 05/02/2006 | US7036584 Method and system for accessing a subterranean zone from a limited surface area |
| 05/02/2006 | US7036583 In situ thermal processing of a hydrocarbon containing formation to increase a porosity of the formation |
| 05/02/2006 | US7036582 Expansion cone for radially expanding tubular members |
| 05/02/2006 | US7036577 Underground water pumping device |
| 05/02/2006 | CA2403860C Tubing head seal assembly |
| 05/02/2006 | CA2381772C Components and methods for use with explosives |
| 05/02/2006 | CA2198689C Method and apparatus for establishing branch wells at a node of a parent well |
| 04/27/2006 | WO2006044763A2 Subsea junction plate assembly running tool and method of installation |
| 04/27/2006 | WO2006044567A2 A method and apparatus for storing energy and multiplying force to pressurize a downhole fluid sample |
| 04/27/2006 | WO2006043829A1 A method and a device for setting a casing |
| 04/27/2006 | WO2006043823A1 A well pump device |
| 04/27/2006 | WO2005121501A3 Aqueous tackifier and methods of controlling particulates |
| 04/27/2006 | US20060089266 Methods of stabilizing surfaces of subterranean formations |
| 04/27/2006 | US20060086507 Wellbore cleanout tool and method |
| 04/27/2006 | US20060086506 Downhole cooling system |
| 04/27/2006 | US20060086504 Method and system for increasing well rate using well-capital-string perforation |
| 04/27/2006 | US20060086501 Methods of using a swelling agent in a wellbore |
| 04/27/2006 | US20060086500 Fuel cell system with a hydrous fluid flow |
| 04/27/2006 | US20060086498 Harvesting Vibration for Downhole Power Generation |
| 04/27/2006 | US20060086497 Wireless Communications Associated With A Wellbore |
| 04/27/2006 | CA2585004A1 Apparatus and method for processing fluids from oil wells |
| 04/27/2006 | CA2583936A1 A well pump device |
| 04/26/2006 | EP1649139A1 A pipe separator with improved separation |
| 04/26/2006 | EP1649138A1 A method and device for separation of a fluid, in particular oil, gas and water |
| 04/26/2006 | EP1649137A1 Expanding a tubular element to different inner diameters |