| 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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| 07/28/2011 | CA2787282A1 Connector for mounting screen to base pipe without welding or swaging |
| 07/28/2011 | CA2787132A1 Compositions and methods for enhancing fluid recovery for hydraulic fracturing treatments |
| 07/28/2011 | CA2787045A1 Systems and methods for producing oil and/or gas |
| 07/27/2011 | EP2347095A1 Systems and methods for dynamically developing wellbore plans with a reservoir simulator |
| 07/27/2011 | EP2347094A1 Method for recovering heavy/viscous oils from a subterranean formation |
| 07/27/2011 | EP2347093A1 Multi-point chemical injection system |
| 07/27/2011 | EP2347092A1 Separator for separating sand and rock particles |
| 07/27/2011 | EP2347084A2 Methods and apparatus for wellbore enhancement |
| 07/27/2011 | EP2347083A2 Methods and apparatus for thermal drilling |
| 07/27/2011 | CN201909022U Waterwheel type lubricating device for pumping unit speed reducer |
| 07/27/2011 | CN201908652U Heterogeneous multilayered core holder |
| 07/27/2011 | CN201908649U Dynamic pressure testing device of downward-hanging type composite bullet perforator unit |
| 07/27/2011 | CN201908643U 12-passage oil-gas separating head |
| 07/27/2011 | CN201908642U Vortex desanding device of oil gas wellhead |
| 07/27/2011 | CN201908641U Hydraulic impact compression fracture plug removing device |
| 07/27/2011 | CN201908640U Anti-buried horizontal well staged fracturing tubular column |
| 07/27/2011 | CN201908639U Valving claw locking ball injection type sand blasting sliding sleeve for horizontal well fracturing |
| 07/27/2011 | CN201908638U High-pressure small-displacement skid-mounted additive feeding device |
| 07/27/2011 | CN201908637U Multimedia eccentric separated injection device |
| 07/27/2011 | CN201908636U Multi-functional eccentric separated-injection packing water distributor |
| 07/27/2011 | CN201908635U Multifunctional borehole operation auxiliary device |
| 07/27/2011 | CN201908634U Targeting device for perforating bullet ground perforation tests |
| 07/27/2011 | CN201908633U Supercharging gunpowder mechanism |
| 07/27/2011 | CN201908632U Offshore self-blowout and artificial lifting integrated well completion tubular column |
| 07/27/2011 | CN201908631U Pumping well ground negative pressure oil collecting device |
| 07/27/2011 | CN201908630U Second-order balanced beam pumping unit |
| 07/27/2011 | CN201908629U Combined type brake control device for oil extractor |
| 07/27/2011 | CN201908628U Walking beam balance short walking beam oil pumping unit |
| 07/27/2011 | CN201908627U Balance wheel type balance pumping unit |
| 07/27/2011 | CN201908623U Ball injection opening self-locking sliding sleeve |
| 07/27/2011 | CN201908612U Blanking plug of eccentric water distributor |
| 07/27/2011 | CN201908605U Insulated tubing self-sealing blowout preventer |
| 07/27/2011 | CN201908596U Anti-reverse rotation device for screw pump |
| 07/27/2011 | CN102137986A A modified process for hydrocarbon recovery using in situ combustion |
| 07/27/2011 | CN102137985A Method for optimizing in-situ bioconversion of carbon-bearing formations |
| 07/27/2011 | CN102137984A Sand control screen assembly and method for use of same |
| 07/27/2011 | CN102137983A Sand control screen assembly and method for use of same |
| 07/27/2011 | CN102135011A Device for pumping coal bed gas through underground radial drilling |
| 07/27/2011 | CN102134988A Method for measuring dryness of downhole steam in thermal recovery horizontal well |
| 07/27/2011 | CN102134986A Production-increasing method by water-plugging and fracturing |
| 07/27/2011 | CN102134985A Injection process of polymer or ternary fluid proportion adjusting pump |
| 07/27/2011 | CN102134984A Aligning device for tests of penetrating ground with perforating bullets |
| 07/27/2011 | CN102134983A Rack-type planet driving linear pumping unit |
| 07/27/2011 | CN101769143B Skid-mounted device for switching and monitoring process flows of water dissolving method mining |
| 07/27/2011 | CN101407777B Potsdam Bacillus brevis and use thereof |
| 07/26/2011 | US7985718 Use of surfactant mixtures for tertiary mineral oil extraction |
| 07/26/2011 | US7984766 System, method and apparatus for gas extraction device for down hole oilfield applications |
| 07/26/2011 | US7984763 Full bore lined wellbores |
| 07/26/2011 | US7984762 Pressure relieving transition joint |
| 07/26/2011 | US7984761 Openhole perforating |
| 07/26/2011 | US7984760 Wellbore method and apparatus for sand and inflow control during well operations |
| 07/26/2011 | US7984759 Diluent-enhanced in-situ combustion hydrocarbon recovery process |
| 07/26/2011 | US7984756 Overpressure protection in gas well dewatering systems |
| 07/26/2011 | CA2678841C Process for enhanced production of heavy oil using microwaves |
| 07/26/2011 | CA2641059C Method and system for centralized well treatment |
| 07/26/2011 | CA2640180C A connection apparatus and method |
| 07/26/2011 | CA2627996C Sealed esp motor system |
| 07/26/2011 | CA2616553C Aluminum silicate proppants, proppant production and application methods |
| 07/26/2011 | CA2587594C Flow separator and flow separation method |
| 07/26/2011 | CA2561920C Gelled oil with surfactant |
| 07/26/2011 | CA2545226C An abrasion resistant frac head with a quick-change wear sleeve and method of refurbishing same |
| 07/26/2011 | CA2541304C A system for precisely controlling a discharge rate of a product from a feeder bin |
| 07/26/2011 | CA2435580C Gas lift valve with central body venturi for controlling the flow of injection gas in oil wells producing by continuous gas lift |
| 07/21/2011 | WO2011087843A1 Producing hydrocarbons from oil shale based on conditions under which production of oil and bitumen are optimized |
| 07/21/2011 | WO2011087608A1 Downhole-adjustable flow control device for controlling flow of a fluid into a wellbore |
| 07/21/2011 | WO2011085753A1 Deep-well pump system |
| 07/21/2011 | WO2011062799A3 Heat generation process for treating oilfield deposits |
| 07/21/2011 | WO2011062797A3 Compensator assembly for submersible pump system |
| 07/21/2011 | WO2011062751A3 Apparatus and method for providing a controllable supply of fluid to subsea well equipment |
| 07/21/2011 | WO2011056409A3 Method of controlling water production through treating proppants with rpms |
| 07/21/2011 | WO2011050083A3 Steam distribution apparatus and method for enhanced oil recovery of viscous oil |
| 07/21/2011 | WO2011046747A3 Coaxial electric submersible pump flow meter |
| 07/21/2011 | WO2011044227A3 Apparatuses and methods of manufacturing oilfield machines |
| 07/21/2011 | WO2011041674A3 Flow control device that substantially decreases flow of a fluid when a property of the fluid is in a selected range |
| 07/21/2011 | WO2011038247A3 A system and apparatus for well screening including a foam layer |
| 07/21/2011 | WO2011038125A3 Method for handling viscous liquid crude hydrocarbons |
| 07/21/2011 | WO2011028930A3 Di-functional surfactants for enhanced oil recovery |
| 07/21/2011 | WO2008058015A3 Methods to enhance the pneumatic handling characteristics of weighting agents |
| 07/21/2011 | US20110177984 Tagged Propping Agents and Related Methods |
| 07/21/2011 | US20110176937 Venturi-type liquid pump |
| 07/21/2011 | US20110175428 Solution Mining and a Crystallizer for Use Therein |
| 07/21/2011 | US20110174507 Carbon sequestration in depleted oil shale deposits |
| 07/21/2011 | US20110174498 Hydrocarbon recovery process for fractured reservoirs |
| 07/21/2011 | US20110174497 Method and system for monitoring waterbottom subsidence |
| 07/21/2011 | US20110174496 In situ method and system for extraction of oil from shale |
| 07/21/2011 | US20110174492 Surfactants and Friction Reducing Polymers for the Reduction of Water Blocks and Gas Condensates and Associated Methods |
| 07/21/2011 | US20110174491 Bottom hole assembly with ported completion and methods of fracturing therewith |
| 07/21/2011 | US20110174490 System and method for performing a fracture operation on a subterranean formation |
| 07/21/2011 | US20110174489 Fracturing/gravel packing tool system with dual flow capabilities |
| 07/21/2011 | US20110174488 Accelerated start-up in sagd operations |
| 07/21/2011 | US20110174487 Optimizing wellbore perforations using underbalance pulsations |
| 07/21/2011 | US20110174486 Wellbore Perforation Tool |
| 07/21/2011 | US20110174485 Treatment Fluids for Wetting Control of Multiple Rock Types and Associated Methods |
| 07/21/2011 | US20110174478 Apparatus for continuous downhole fluid release and well evaluation |
| 07/21/2011 | CA2786572A1 Steam generator |
| 07/21/2011 | CA2690768A1 Compositions and methods for enhancing fluid recovery for hydraulic fracturing treatments |
| 07/20/2011 | EP2344796A2 Method for installing an operating rig for a fluid in a body of water with a traction unit |
| 07/20/2011 | EP1776198B1 Process for stimulating production of methane from petroleum in subterranean formations |
| 07/20/2011 | EP1765529B1 Process for stimulating production of hydrogen from petroleum in subterranean formations |
| 07/20/2011 | CN201902202U Staged fracturing string of oil-gas horizontal well |