| 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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| 09/01/2009 | US7581587 Method for in-situ combustion of in-place oils |
| 09/01/2009 | US7581586 Wellbore screen |
| 09/01/2009 | CA2618848C Pulse width modulated downhole flow control |
| 09/01/2009 | CA2557148C Orthoester compositions and methods for reducing the viscosity of viscosified treatment fluids |
| 09/01/2009 | CA2515044C Shoe for expandable liner system |
| 09/01/2009 | CA2511628C Downhole filter |
| 09/01/2009 | CA2469392C Expandable locking thread joint |
| 09/01/2009 | CA2345595C Water treatment process for thermal heavy oil recovery |
| 08/28/2009 | CA2654487A1 Live bottom hole pressure for perforation/fracturing operations |
| 08/28/2009 | CA2627102A1 Fluid and method for agglomerating particles in a well service operation |
| 08/27/2009 | WO2009105469A2 Test procedure to determine concentration and relative distribution of sized particles in a drilling fluid |
| 08/27/2009 | WO2009105306A1 Method of logging a well using a thermal neutron absorbing material |
| 08/27/2009 | WO2009104978A1 A method of differential etching of the subterranean fracture |
| 08/27/2009 | WO2009103629A1 Method and device for casing a bored well portion |
| 08/27/2009 | WO2009085112A3 Nano particle reinforced polymer element for a stator and rotor assembly |
| 08/27/2009 | WO2008053364A3 Gravel packing screen with inflow control device and bypass |
| 08/27/2009 | US20090212969 Underwater Communications Using RF |
| 08/27/2009 | US20090211960 Fluid treatment tank and a well fluid processing system comprising such a tank |
| 08/27/2009 | US20090211770 Elongated Sealing Member for Downhole Tool |
| 08/27/2009 | US20090211765 Method for rapid sealing of boreholes |
| 08/27/2009 | US20090211764 Vertical Annular Separation and Pumping System With Outer Annulus Liquid Discharge Arrangement |
| 08/27/2009 | US20090211763 Vertical Annular Separation and Pumping System with Integrated Pump Shroud and Baffle |
| 08/27/2009 | US20090211762 Detachable Electrical Actuator |
| 08/27/2009 | US20090211761 Oil and gas well completion system and method of installation |
| 08/27/2009 | US20090211759 Methods and Devices for Treating Multiple-Interval Well Bores |
| 08/27/2009 | US20090211758 Method of Oil Recovery Using a Foamy Oil-External Emulsion |
| 08/27/2009 | US20090211755 System and method for injection into a well zone |
| 08/27/2009 | US20090211753 System and method for removing liquid from a gas well |
| 08/27/2009 | US20090211752 Method and apparatus for sampling formation fluids |
| 08/27/2009 | US20090211751 Field-responsive fluids |
| 08/27/2009 | US20090211748 Device for Conducting Cementing Operations and Inflow Regulation |
| 08/27/2009 | US20090211746 High-energy gas fracture apparatus for through-tubing operation |
| 08/27/2009 | US20090211745 Non-explosive tubing perforator |
| 08/27/2009 | CA2715861A1 Improved tubing section |
| 08/27/2009 | CA2715800A1 Test procedure to determine concentration and relative distribution of sized particles in a drilling fluid |
| 08/27/2009 | CA2712229A1 A method of differential etching of the subterranean fracture |
| 08/26/2009 | EP2092161A1 Apparatus and methods for sidewall percussion coring using a voltage activated igniter |
| 08/26/2009 | EP2092160A1 Method for laying a pipeline having an inner corrosion proof cladding |
| 08/26/2009 | EP2092159A2 Electrolytic system and method for enhanced release and deposition of sub-surface and surface components |
| 08/26/2009 | EP0840769B2 Non-toxic, inexpensive synthetic drilling fluid |
| 08/26/2009 | CN201297970Y Device for testing load and acceleration |
| 08/26/2009 | CN201297164Y Energy-saving and viscosity-reducing device for producing oil from viscous oil well with hollow rod using heat carrier for obturating and circulating |
| 08/26/2009 | CN201297163Y Jet apparatus used for chemical water plugging of oil well |
| 08/26/2009 | CN201297162Y Solar device for automatically controlling water injection flux of oil well |
| 08/26/2009 | CN201297161Y Perforating bullet with large aperture and deep penetration |
| 08/26/2009 | CN201297160Y Double-tapered shaped charge cover dedicated to perforating charge |
| 08/26/2009 | CN201297159Y Ultrahigh-temperature perforating charge for oil wells |
| 08/26/2009 | CN201297158Y Telescopic reducing sand filtering tube |
| 08/26/2009 | CN201297157Y Beam thick oil pumping unit |
| 08/26/2009 | CN201297156Y Drum-type energy-saving pumping unit |
| 08/26/2009 | CN101517197A Improved apparatus for the decomposition of hydrogen peroxide |
| 08/26/2009 | CN101517196A Method and assembly for producing oil and/or gas through a well traversing stacked oil and/or gas bearing earth layers |
| 08/26/2009 | CN101517195A Method of expanding a tubular element |
| 08/26/2009 | CN101517194A Gravel pack apparatus that includes a swellable element |
| 08/26/2009 | CN101514623A Production and installation method of perforation simulation target device for laboratory |
| 08/26/2009 | CN101514622A Counterweight isolator |
| 08/26/2009 | CN101514621A Sand prevention in multiple regions without a drill |
| 08/26/2009 | CN101514620A Wheel type oil pumping unit |
| 08/26/2009 | CN100532782C Method for gas liquid separation under oil well and uniform flow gas anchor of multiple sedimentation cups |
| 08/25/2009 | US7579302 Friction reducer performance by complexing multivalent ions in water |
| 08/25/2009 | US7578968 Effecting biocidal activity in aqueous well fluid by blending with the fluid a biocidally-effective amount of a sulfamate stabilized, bromine-based biocide formed from a halogen source which is bromine chloride, bromine and chlorine, a source of sulfamate anions, alkali metal base, and water |
| 08/25/2009 | US7578354 Device and method to seal boreholes |
| 08/25/2009 | US7578346 Method of plugging fractured formation |
| 08/25/2009 | US7578345 Process for recovering heavy oil using multiple effect evaporation |
| 08/25/2009 | US7578344 Unsintered mesh sand control screen |
| 08/25/2009 | US7578343 Viscous oil inflow control device for equalizing screen flow |
| 08/25/2009 | US7578043 Coupling tubulars |
| 08/25/2009 | CA2617489C Auto reversing expanding roller system |
| 08/25/2009 | CA2429734C Coating for preventing erosion of wellbore components |
| 08/20/2009 | WO2009103038A1 Method and apparatus to treat well stimulation fluids in-situ |
| 08/20/2009 | WO2009103036A1 Valve apparatus for inflow control |
| 08/20/2009 | WO2009102809A2 Riser lifecycle management system, program product, and related methods |
| 08/20/2009 | WO2009102804A2 Systems and methods for positioning of pads and orienting slot templates |
| 08/20/2009 | WO2009102696A2 One trip liner running, cementing and setting tool using expansion |
| 08/20/2009 | WO2009101125A1 Method of producing hydrocarbons through a smart well |
| 08/20/2009 | WO2009100695A1 Geothermal circulation system |
| 08/20/2009 | WO2009100518A1 A modified process for hydrocarbon recovery using in situ combustion |
| 08/20/2009 | WO2009050367A3 Horizontal liquid/gas separation device and separation method, intended in particular for the liquid and gas phases of crude oil |
| 08/20/2009 | WO2009002414A3 Methods and systems for generating and using plasma conduits |
| 08/20/2009 | US20090205840 Expandable downhole actuator, method of making and method of actuating |
| 08/20/2009 | US20090205839 Expandable connection |
| 08/20/2009 | US20090205828 Production and Delivery of a Fluid Mixture to an Annular Volume of a Wellbore |
| 08/20/2009 | US20090205826 Method for Increasing the Fluid Productivity of a Hydraulically Fractured Well |
| 08/20/2009 | US20090205825 Method of logging a well using a thermal neutron absorbing material |
| 08/20/2009 | US20090205824 Polymeric Microspheres As Degradable Fluid Loss Additives In Oilfield Applications |
| 08/20/2009 | US20090205823 Process for enhancing the production of oil from depleted, fractured reservoirs using surfactants and gas pressurization |
| 08/20/2009 | US20090205821 Method and apparatus to treat well stimulation fluids In-Situ |
| 08/20/2009 | US20090205819 Well Modeling Associated With Extraction of Hydrocarbons From Subsurface Formations |
| 08/20/2009 | DE102008009499A1 Geothermisches Zirkulationssystem Geothermal circulation system |
| 08/20/2009 | DE102007036832B4 Vorrichtung zur In-Situ-Gewinnung einer kohlenwasserstoffhaltigen Substanz Device for in situ extraction of a hydrocarbonaceous substance |
| 08/20/2009 | CA2717080A1 One trip liner running, cementing and setting tool using expansion |
| 08/20/2009 | CA2715568A1 Valve apparatus for inflow control |
| 08/20/2009 | CA2715094A1 Method of producing hydrocarbons through a smart well |
| 08/20/2009 | CA2714731A1 Systems and methods for improved positioning of pads |
| 08/20/2009 | CA2628368A1 Cut release sub and method |
| 08/19/2009 | EP1792049B8 Screen for controlling inflow of solid particles in a wellbore |
| 08/19/2009 | EP1738056B1 Temperature limited heaters used to heat subsurface formations |
| 08/19/2009 | CN201293186Y Overturning motor bracket capable of rapidly changing belt |
| 08/19/2009 | CN201293036Y Crank-pin anti-releasing device |
| 08/19/2009 | CN201292937Y Speed reducing and changing device for adjusting stroke frequency of pumping unit oil well |