| 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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| 04/08/2009 | CN100476668C Efficiency estimating method of ground equipment of oil pumping system with lever |
| 04/08/2009 | CN100476217C Normal and reverse circulating jet pump with hydraulically-driven multiple switching sliding sleeve |
| 04/08/2009 | CA2638855A1 System, method and apparatus for hydrogen-oxygen burner in downhole steam generator |
| 04/07/2009 | US7513313 Bottom plug for forming a mono diameter wellbore casing |
| 04/07/2009 | US7513308 Tubing running equipment for offshore rig with surface blowout preventer |
| 04/07/2009 | US7513307 Pumping system for injecting a mixture of liquids via a well into a subterranean formation |
| 04/07/2009 | US7513306 Oxygen and carbon dioxide are mixed to form an oxidizer fluid, fuel is combusted downhole by reacting it with oxidizer fluid to provide hot combustion products; combustion products are placed in contact with diluent fluid; cooled product fluid is injected into methane hydrate deposit decomposing hydrate |
| 04/07/2009 | US7513305 Apparatus and methods for operating a tool in a wellbore |
| 04/07/2009 | US7513304 Method for drilling with improved fluid collection pattern |
| 04/07/2009 | CA2525090C Aluminosilicate mixture for fabrication of fireproof, high-strength granules, fireproof high-strength spherical granules and the method of their manufacture |
| 04/07/2009 | CA2495916C Cup seal expansion tool |
| 04/07/2009 | CA2452238C Wire lock expandable connection |
| 04/07/2009 | CA2433363C Progressive cavity wellbore pump for use in artificial lift systems |
| 04/07/2009 | CA2414691C Sealed esp motor system |
| 04/07/2009 | CA2353982C Recovery of hydrocarbons in oil wells by injection of treated inert gases obtained from the industrial effluence |
| 04/05/2009 | CA2817943A1 Hydraulic actuated pump system |
| 04/04/2009 | CA2640448A1 Methods for enhancing efficiency of bitumen extraction from oil sands using lipids and lipid by-products as process additives |
| 04/04/2009 | CA2639869A1 Wellhead isolation sleeve assembly |
| 04/02/2009 | WO2009043055A2 System and method for extraction of hydrocarbons by in-situ radio frequency heating of carbon bearing geological formations |
| 04/02/2009 | WO2009042830A2 Insertable progressive cavity pump |
| 04/02/2009 | WO2009042479A1 Providing dynamic transient pressure conditions to improve perforation characteristics |
| 04/02/2009 | WO2009042333A1 Application of reservoir conditioning in petroleum reservoirs |
| 04/02/2009 | WO2009042320A1 Intelligent underwater leak detection system |
| 04/02/2009 | WO2009042307A1 Method and apparatus for flow assurance management in subsea single production flowline |
| 04/02/2009 | WO2009042284A1 Methods for producing fuels and solvents |
| 04/02/2009 | WO2009041894A1 Method and device for producing a gaseous medium comprising steam |
| 04/02/2009 | WO2009041891A1 Method and device for producing a gaseous medium comprising steam |
| 04/02/2009 | WO2009040561A2 Choke assembly |
| 04/02/2009 | WO2009040442A1 Method for enhancing recovery of a hydrocarbon fluid |
| 04/02/2009 | WO2009039776A1 An exploitation system and method for displacing coal bed gas by mixed gas through a pumping drainage way which is under a well |
| 04/02/2009 | WO2009039602A1 Artificial lift mechanisms |
| 04/02/2009 | WO2009023665A3 Insulated bearings for downhole motors |
| 04/02/2009 | WO2009023542A3 Combined seal head and pump intake for electrical submersible pump |
| 04/02/2009 | WO2008100362A3 Tractor communication/control and select fire perforating switch |
| 04/02/2009 | WO2007109318A3 Method and apparatus for recovering and transporting methane gas |
| 04/02/2009 | WO2007100370A3 Method of extracting hydrocarbons |
| 04/02/2009 | WO2007011986A3 Method of increasing reservoir permeability |
| 04/02/2009 | WO2006116868A8 Method for making transportable aqueous slurries by particulate hydrophobicization |
| 04/02/2009 | WO2005040545A3 Tree mounted well flow interface device |
| 04/02/2009 | US20090088347 Treatment Fluid with Non-Symmetrical Peroxide Breaker and Method |
| 04/02/2009 | US20090084557 Fluid flow conduit, method and use |
| 04/02/2009 | US20090084554 Drilling and Fracturing Fluid |
| 04/02/2009 | US20090084553 Sliding sleeve valve assembly with sand screen |
| 04/02/2009 | US20090084552 Providing dynamic transient pressure conditions to improve perforation characteristics |
| 04/02/2009 | US20090084549 Downhole tools having screens for insertion into gravel disposed in wellbores and methods of installing same |
| 04/02/2009 | US20090084548 Recovery of hydrocarbons |
| 04/02/2009 | US20090084547 Downhole burner systems and methods for heating subsurface formations |
| 04/02/2009 | US20090084545 Method for managing production from a hydrocarbon producing reservoir in real-time |
| 04/02/2009 | US20090084540 Method of expanding a tubular element in a wellbore |
| 04/02/2009 | US20090084534 Method and system for accessing subterranean deposits from the surface and tools therefor |
| 04/02/2009 | CA2700212A1 Insertable progressive cavity pump |
| 04/02/2009 | CA2698757A1 Application of reservoir conditioning in petroleum reservoirs |
| 04/02/2009 | CA2697984A1 Artificial lift mechanisms |
| 04/01/2009 | EP2042685A1 Choke assembly |
| 04/01/2009 | EP2042684A1 Choke assembly |
| 04/01/2009 | EP2042683A1 A logging while producing apparatus and method |
| 04/01/2009 | EP2041508A1 Method for selective extraction of natural gas liquids from rich natural gas |
| 04/01/2009 | EP2041505A2 Apparatus and methods for natural gas transportation and processing |
| 04/01/2009 | EP2041477A1 Pipe string device for conveying a fluid from a well head to a vessel |
| 04/01/2009 | EP2041394A2 Method and system of diagnosing production changes |
| 04/01/2009 | EP2041393A1 Method of radially expanding a tubular element |
| 04/01/2009 | EP2041237A2 Rheology controlled heterogeneous particle placement in hydraulic fracturing |
| 04/01/2009 | EP1871987B1 In situ conversion process systems utilizing wellbores in at least two regions of a formation |
| 04/01/2009 | EP1851500B1 Shaped charge assembly and method of damaging a target |
| 04/01/2009 | CN201215886Y Blow out preventing device for sealing oil-submersible electric pump well head cable |
| 04/01/2009 | CN201215009Y Double detection probe metering and adjusting apparatus |
| 04/01/2009 | CN201215008Y Continuous tube liquid carrying and eyelet shunt simulating device in horizontal well bore |
| 04/01/2009 | CN201215007Y Re-entering guide device for injection string |
| 04/01/2009 | CN201215006Y Single layer shunt detection electrodynamic water distribution detecting and adjusting instrument |
| 04/01/2009 | CN201215005Y Welded straight-line joint type sieve tube |
| 04/01/2009 | CN201215004Y Novel gas-tight sand prevention pumping unit |
| 04/01/2009 | CN201215003Y Sucker rod controlled three-layer wheel pumping water finding switch |
| 04/01/2009 | CN201214986Y Anti-pollution well washing oil extraction device |
| 04/01/2009 | CN101400872A An improved screening device |
| 04/01/2009 | CN101397900A Perforator charge with a case containing a reactive material |
| 04/01/2009 | CN101397899A Providing dynamic transient pressure conditions to improve perforation characteristics |
| 04/01/2009 | CN101397898A Eccentric wear prevention method for pumping well with pole |
| 04/01/2009 | CN101397890A Apparatus string for use in a wellbore |
| 04/01/2009 | CN100473803C Method and system for accessing subterranean zones from limited surface area |
| 03/31/2009 | US7510017 Sealing and communicating in wells |
| 03/31/2009 | US7510012 Bubble breaker assembly |
| 03/31/2009 | US7510011 Well servicing methods and systems employing a triggerable filter medium sealing composition |
| 03/31/2009 | US7510009 Method of acidizing a subterranean formation with diverting foam or fluid |
| 03/31/2009 | US7510005 Acrylate, methylacrylate polymerizable monomer; ammonium persulfate/N,N,N',N'-tetramethylethylene diamine redox initiator; dioctadecyldimethylammonium chloride antistatic agent; heat fluid system to decrease the risk of sparking and fire |
| 03/31/2009 | US7510000 Reducing viscosity of oil for production from a hydrocarbon containing formation |
| 03/31/2009 | CA2552525C Method of reducing water influx into gas wells |
| 03/31/2009 | CA2543886C Multiple azimuth control of vertical hydraulic fractures in unconsolidated and weakly cemented sediments |
| 03/31/2009 | CA2536763C Simultaneous development of underground caverns and deposition of materials |
| 03/31/2009 | CA2530325C Matrix treatment of damaged sandstone formations using buffered hf-acidizing solutions |
| 03/26/2009 | WO2009039389A1 Pre-verification of perforation alignment |
| 03/26/2009 | WO2009038999A1 Annular pressure monitoring during hydraulic fracturing |
| 03/26/2009 | WO2009038997A2 Tubing retrievable injection valve |
| 03/26/2009 | WO2009038777A1 Heavy oil recovery with fluid water and carbon dioxide |
| 03/26/2009 | WO2009038491A1 Proppant, a method for the production thereof and a formation hydraulic fracturing method using the thus produced proppant |
| 03/26/2009 | WO2009038467A2 Shear open valve |
| 03/26/2009 | WO2009037593A2 High gain rfid tag antennas |
| 03/26/2009 | WO2009037591A2 Subsea intervention riser system |
| 03/26/2009 | WO2009006253A3 Degradable gels in zonal isolation applications |
| 03/26/2009 | WO2008156775A4 Downhole jet pump |
| 03/26/2009 | WO2008112837A9 Hydraulic fracture initiation and propagation control in unconsolidated and weakly cemented sediments |