| 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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| 06/03/2009 | CN101446190A Steam injection apparatus for steam assisted gravity drainage techniques |
| 06/03/2009 | CN101446189A Supercritical carbon dioxide drive physical analogue device |
| 06/03/2009 | CN101446188A Single upper seal sand blasting perforation fracturing technology |
| 06/03/2009 | CN101446187A Twin packer hydro-jet fracturing technology |
| 06/03/2009 | CN101446186A An phase-change type energy saving and environment protective oil pumping machine converting carbonic anhydride by using heat energy |
| 06/03/2009 | CN101446185A Direct balance energy-saving beam-pumping unit |
| 06/03/2009 | CN100494624C Hydraulic fracturing process for generating multiple fractures |
| 06/03/2009 | CN100493901C Particulate material having multiple curable coatings and methods for making and using same |
| 06/02/2009 | US7541318 Placing discrete amounts of resin mixture into a well bore comprising a treatment fluid and allowing the resin mixture to substantially cure and form proppant particles while inside the treatment fluid |
| 06/02/2009 | US7541316 Comprising at least one polysaccharide and an effective amount of at least one polyacrylamide to maintain stability at temperature greater than 250 degrees F; formate compound is not required to achieve high-temperature stability, thus, fluid is less expensive than conventional polymer-containing fluids |
| 06/02/2009 | US7541315 Reduces hydrocarbon deposits; mixture of fluid and crystal growth inhibitors prepared by mixing polymer having characteristic of inhibiting paraffin crystalline growth in formation fluid from oil and gas wells with weak to moderate wax solvent and strong wax solvent; synergistic |
| 06/02/2009 | US7540329 Casing coupler liner hanger mechanism |
| 06/02/2009 | US7540328 Injecting a slurry that generates hydrofluoric acid downhole to etch the sandstone fracture faces created; water free; solid additive that is added to an aqueous fluid to provide an approximately neutral pH fracturing fluid (HF) |
| 06/02/2009 | US7540324 Heating hydrocarbon containing formations in a checkerboard pattern staged process |
| 06/02/2009 | US7540323 Well pumping system with pump rod trash cups |
| 06/02/2009 | US7540308 Method of supplying a powdered chemical composition to a wellsite |
| 06/02/2009 | CA2565589C Methods of completing a subterranean well and associated apparatus |
| 06/02/2009 | CA2555646C Apparatus for changing wellbore fluid temperature |
| 06/02/2009 | CA2541870C Methods of fracturing a subterranean formation using a ph dependent foamed fracturing fluid |
| 06/02/2009 | CA2535239C Energy controlling device |
| 06/02/2009 | CA2530584C Composition and method for diversion agents for acid stimulation of subterranean formations |
| 06/02/2009 | CA2528593C Compositions and methods for improving proppant pack permeability and fracture conductivity in a subterranean well |
| 06/02/2009 | CA2517919C Polished rod rotator |
| 06/02/2009 | CA2489589C Expandable centralizer for downhole tubulars |
| 06/02/2009 | CA2484623C Installation of downhole electrical power cable and safety valve assembly |
| 06/02/2009 | CA2405256C Viscosity reduction of viscoelastic surfactant based fluids |
| 06/02/2009 | CA2399130C A method and apparatus for the optimal predistortion of an electromagnetic signal in a downhole communication system |
| 06/02/2009 | CA2357719C Method for creating secondary sidetracks in a well system |
| 05/30/2009 | CA2707147A1 Methods and equipment to improve reliability of pinpoint stimulation operations |
| 05/30/2009 | CA2707143A1 Methods and equipment to improve reliability of pinpoint stimulation operations |
| 05/30/2009 | CA2707140A1 Methods and equipment to improve reliability of pinpoint stimulation operations |
| 05/28/2009 | WO2009067423A1 Producing oil and/or gas with emulsion comprising miscible solvent |
| 05/28/2009 | WO2009067420A1 Systems and methods for producing oil and/or gas |
| 05/28/2009 | WO2009067418A1 Systems and methods for producing oil and/or gas |
| 05/28/2009 | WO2009066097A1 Completion arrangement |
| 05/28/2009 | WO2009066034A2 Hydrocarbon production plant and process |
| 05/28/2009 | WO2009065890A1 Method of radially expanding a tubular element |
| 05/28/2009 | WO2009065844A1 Method of drilling a wellbore |
| 05/28/2009 | WO2009065578A1 Formation of flow conduits under pressure |
| 05/28/2009 | WO2009065316A1 A downhole geothermal steam driving device and a genrating electricity and pumping liquid method thereof |
| 05/28/2009 | WO2009048823A3 A method and apparatus for determining a parameter at an inflow control device in a well |
| 05/28/2009 | WO2009048822A3 Flow restriction device |
| 05/28/2009 | WO2009048821A3 Downhole optical communication system and method |
| 05/28/2009 | WO2009045870A3 System and method for performing oilfield operations |
| 05/28/2009 | WO2009027305A3 Apparatus for in situ extraction of bitumen or very heavy oil |
| 05/28/2009 | US20090133882 Method and apparatus for downhole artificial lift system protection |
| 05/28/2009 | US20090133878 Controlling the Pressure Within an Annular Volume of a Wellbore |
| 05/28/2009 | US20090133875 Gravel packing apparatus utilizing diverter valves |
| 05/28/2009 | US20090133874 Wellbore Apparatus and Method for Completion, Production and Injection |
| 05/28/2009 | US20090133872 Flow back separators |
| 05/28/2009 | US20090133871 Drilling, perforating and formation analysis |
| 05/28/2009 | US20090133869 Water Sensitive Adaptive Inflow Control Using Couette Flow To Actuate A Valve |
| 05/28/2009 | CA2706712A1 Completion arrangement |
| 05/28/2009 | CA2706083A1 Systems and methods for producing oil and/or gas |
| 05/28/2009 | CA2705199A1 Producing oil and/or gas with emulsion comprising miscible solvent |
| 05/28/2009 | CA2705198A1 Systems and methods for producing oil and/or gas |
| 05/28/2009 | CA2702870A1 Method of radially expanding a tubular element |
| 05/28/2009 | CA2702869A1 Method of drilling a wellbore |
| 05/28/2009 | CA2699203A1 Hydrocarbon production plant and process |
| 05/27/2009 | EP2063123A2 Method and apparatus for transporting fluid in a conduit |
| 05/27/2009 | CN201246381Y Oil pumping machine horse head pin with adjusting sleeve |
| 05/27/2009 | CN201246159Y Semi-seal device of horizontal well continuous tube simulator |
| 05/27/2009 | CN201246158Y Pipeline magnetic steel type impeller clip-proof protection device |
| 05/27/2009 | CN201246155Y Hollow rod water-doped viscosity reduction apparatus |
| 05/27/2009 | CN201246154Y Thermal extraction seal plug |
| 05/27/2009 | CN201246153Y Combustion heater for thick oil heat extraction |
| 05/27/2009 | CN201246152Y Steam injecting tube column apparatus and system for injecting steam into wellbore and steam auxiliary gravity oil drainage system |
| 05/27/2009 | CN201246151Y Novel eccentric water distributing apparatus |
| 05/27/2009 | CN201246150Y Oil extraction well head water adding process flow combined device |
| 05/27/2009 | CN201246149Y Simple oil gas mining platform control device on sea |
| 05/27/2009 | CN201246148Y Oil well yield increasing oil extraction apparatus |
| 05/27/2009 | CN201246147Y Vertical oil pumping center of star type wheel system |
| 05/27/2009 | CN201246146Y Adjusting arm of annular allocator |
| 05/27/2009 | CN201246145Y Double-well linkage type oil pumping machine |
| 05/27/2009 | CN201246144Y 油井变频控制系统和数据采集控制终端 Well inverter control system and data acquisition and control terminal |
| 05/27/2009 | CN201246143Y Reel drum type lower drive electric control oil pumping machine frame |
| 05/27/2009 | CN201246142Y Top rotary abdicating mechanism of chain type oil pumping machine |
| 05/27/2009 | CN201246141Y Guard rail of oil pumping machine |
| 05/27/2009 | CN201246140Y Speed twisting automatic regulating device of oil pumping machine |
| 05/27/2009 | CN201246139Y Automatic rope pulling apparatus of oil salvaging vehicle |
| 05/27/2009 | CN201246135Y Throwing-free dead nozzle plugging machine |
| 05/27/2009 | CN101443269A A process for the manufacture of carbon disulphide |
| 05/27/2009 | CN101443268A A process for the manufacture of carbon disulphide |
| 05/27/2009 | CN101440704A Ground-dipping ore bed continuous high-energy gas fracturing seepage increasing method and specific high-energy gas generator |
| 05/27/2009 | CN101440703A Method and apparatus for pipeline exploding early warning and operation control of oil extraction steam-filling boiler |
| 05/27/2009 | CN101440702A Sieve tube well completion method under insufficient balance condition and temporary blocking type sieve tube |
| 05/27/2009 | CN101440701A Temporary blocking type sieve tube of insufficient balance well completion |
| 05/27/2009 | CN101440277A Selective water blockoff agent and preparation thereof |
| 05/27/2009 | CN101439238A Polyphase flow separator |
| 05/27/2009 | CN100491692C Compound perforator without body |
| 05/26/2009 | US7539548 Smart-control PLC based touch screen driven remote control panel for BOP control unit |
| 05/26/2009 | US7537706 Microporous diffusion apparatus |
| 05/26/2009 | US7537696 Method and apparatus for treatment of wastewater employing membrane bioreactors |
| 05/26/2009 | US7537058 Method for gas production from gas hydrate reservoirs |
| 05/26/2009 | US7537055 Method and apparatus for forming a window in a casing using a biasing arm |
| 05/26/2009 | US7537051 Downhole power generation assembly |
| 05/26/2009 | US7536942 Explosive pipe severing tool |
| 05/26/2009 | CA2438807C Mono-diameter wellbore casing |
| 05/26/2009 | CA2356184C Tubing anchor |
| 05/23/2009 | CA2609090A1 Method and apparatus for removing production limiting liquid volumes from natural gas wells |