| 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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| 03/26/2009 | WO2006014166A3 Linear drive assembly with rotary union for wellheads |
| 03/26/2009 | US20090079255 Harvesting hydrocarbons from coal, shale, peat and landfill seams |
| 03/26/2009 | US20090078466 Apparatus and Method for Driving Casing or Conductor Pipe |
| 03/26/2009 | US20090078430 Contraction joint system |
| 03/26/2009 | US20090078427 system for completing water injector wells |
| 03/26/2009 | US20090078426 Insertable Progressive Cavity Pump |
| 03/26/2009 | US20090078424 Subsea lateral drilling |
| 03/26/2009 | US20090078422 Enclosed circulation tool for a well |
| 03/26/2009 | US20090078417 Emulsion System for Sand Consolidation |
| 03/26/2009 | US20090078416 Water Treatment Method for Heavy Oil Production Using Calcium Sulfate Seed Slurry Evaporation |
| 03/26/2009 | US20090078415 In situ extraction of hydrocarbons from hydrocarbon-containing materials |
| 03/26/2009 | US20090078414 Chemically enhanced thermal recovery of heavy oil |
| 03/26/2009 | US20090078412 Circulation pump for circulating downhole fluids, and characterization apparatus of downhole fluids |
| 03/26/2009 | US20090078409 Method and Means for Providing Time Delay in Downhole Well Operations |
| 03/26/2009 | US20090078408 Apparatus for Providing a Temporary Degradable Barrier in a Flow Pathway |
| 03/26/2009 | US20090078405 Pressure Containment Devices and Methods of Using Same |
| 03/26/2009 | US20090078403 Well screen |
| 03/26/2009 | US20090078036 Method of downhole characterization of formation fluids, measurement controller for downhole characterization of formation fluids, and apparatus for downhole characterization of formation fluids |
| 03/26/2009 | CA2700135A1 Heavy oil recovery with fluid water and carbon dioxide |
| 03/26/2009 | CA2699112A1 Shear open valve |
| 03/25/2009 | EP2039879A2 Apparatus and methods for running liners |
| 03/25/2009 | EP2039877A2 Shutdown system for an underwater hydrocarbon production facility |
| 03/25/2009 | EP2038809A2 Method for comparing and back allocating production |
| 03/25/2009 | EP2038512A1 Method and system for treating a subterraean formation using diversion |
| 03/25/2009 | EP1738057B1 Subsurface electrical heaters using nitride insulation |
| 03/25/2009 | EP1721058B1 Connection system for subsea flow interface equipment |
| 03/25/2009 | EP1576253A4 Method using particulate chelates to stimulate production of petroleum in carbonate formations |
| 03/25/2009 | CN201212468Y Brake fixer for pumping unit |
| 03/25/2009 | CN201212467Y Remote numerical control oil production machine |
| 03/25/2009 | CN201212466Y Oil-submersible and oil production pump driven by DC step permanent magnet linear electric motor |
| 03/25/2009 | CN201212391Y High-pressure desander plant |
| 03/25/2009 | CN201212390Y High-efficiency combination electrode electric dehydration apparatus |
| 03/25/2009 | CN201212389Y ASP Flooding Produced Liquid and water removal device |
| 03/25/2009 | CN201212388Y Single-well oil-gas separating, heating and treating device |
| 03/25/2009 | CN201212387Y Gas injection, gas production and brine discharge integration process pipe column for underground gas storage |
| 03/25/2009 | CN201212386Y Downhole high-efficiency mixer for reducing viscosity of thick oil |
| 03/25/2009 | CN201212385Y High-pressure high flow rate oil, gas and water desander filtration apparatus |
| 03/25/2009 | CN201212384Y Inner cover type anti-sand device for oil well pump |
| 03/25/2009 | CN201212383Y Balance type hydraulic pumping unit |
| 03/25/2009 | CN201212382Y Pin commutation chain long stroke beam-pumping unit |
| 03/25/2009 | CN201212381Y Automatic stop protection arrangement for pumping unit while pigtail breaking and releasing |
| 03/25/2009 | CN201212380Y Paraffin control pumping-assisting booster |
| 03/25/2009 | CN201212374Y Oil sleeve zonal injection packer |
| 03/25/2009 | CN201212373Y Elastic tube-type casting head |
| 03/25/2009 | CN201212372Y Piston tube-type casting head |
| 03/25/2009 | CN101395340A Liquified petroleum gas fracturing system |
| 03/25/2009 | CN101395339A Method and apparatus to cement a perforated casing |
| 03/25/2009 | CN101395338A System and method for producing fluids from a subterranean formation |
| 03/25/2009 | CN101395337A Method and apparatus for selective treatment of a perforated casing |
| 03/25/2009 | CN101393267A System and method for combined microseismic and tiltmeter analysis |
| 03/25/2009 | CN101393000A Shaped charge liner and perforating gun |
| 03/25/2009 | CN101392641A Method for real-time observing mother oil displacement process of true core |
| 03/25/2009 | CN101392640A True core real time observing oil-driving model |
| 03/25/2009 | CN101392639A Dynamic balance pumping system |
| 03/25/2009 | CN101392638A Simulating device for solid-state mining experiment of gas hydrate |
| 03/25/2009 | CN101392633A Mechanical and hydraulic double-acting expansion sieve tube hanger |
| 03/25/2009 | CN100472113C Method of producing a hermetic tubular joint comprising local and initial added thickness(es), by means of plastic expansion |
| 03/25/2009 | CN100472031C System and method for transmitting electric power into a bore |
| 03/25/2009 | CN100472030C Pneumatic deep-penetrating composite block-removing method for oil layer |
| 03/25/2009 | CN100472029C Annular rack type pumping machine |
| 03/24/2009 | US7509245 Method system and program storage device for simulating a multilayer reservoir and partially active elements in a hydraulic fracturing simulator |
| 03/24/2009 | US7507694 Drilling or fructuring fluid containing an oleaginous fluid ( diesel oil, cude oil, paraffin oil, olefin etc.) a fluid ( water, fresh or brine, glycerol, polyetheramine) that is partially immiscible with the oleaginous fluid, and emulsion facilitating particles; treating the subterranean formation |
| 03/24/2009 | US7507693 shortening the shear recovery time and increase viscosities by injecting a mixture comprising surfactant selected from cationic, anionic, zwitterionic, and amphoteric surfactants, and a rheology enhancer lignosulfonates derived from wood pulping |
| 03/24/2009 | US7507692 Methods for reducing circulation loss during drilling operations |
| 03/24/2009 | US7506690 Enhanced liquid hydrocarbon recovery by miscible gas injection water drive |
| 03/24/2009 | US7506689 Fracturing fluids comprising degradable diverting agents and methods of use in subterranean formations |
| 03/24/2009 | US7506687 System for radially expanding a tubular member |
| 03/24/2009 | US7506686 Diverter plugs for use in well bores and associated methods of use |
| 03/24/2009 | US7506685 Apparatus and method for extracting petroleum from underground sites using reformed gases |
| 03/24/2009 | CA2639805A1 Viscosity reduction |
| 03/24/2009 | CA2490054C Closed loop multiphase underbalanced drilling process |
| 03/24/2009 | CA2437052C Apparatus and method to mechanically orient perforating systems in a well |
| 03/24/2009 | CA2416680C Methods of forming permeable sand screens in well bores |
| 03/24/2009 | CA2398289C Choke inductor for wireless communication and control in a well |
| 03/24/2009 | CA2383764C Method for modelling fluid displacement in a porous environment taking into account hysteresis effects |
| 03/21/2009 | CA2639661A1 Aggregate delivery unit |
| 03/19/2009 | WO2009036034A1 Hermetically sealed motor lead tube |
| 03/19/2009 | WO2009035923A2 Multi-function indicating tool |
| 03/19/2009 | WO2009035922A1 Multi-function indicating tool |
| 03/19/2009 | WO2009035897A1 Methods for performing simulation of surfactant flooding of a hydrocarbon reservoir |
| 03/19/2009 | WO2009035896A1 Method for gas production from gas hydrate reservoirs |
| 03/19/2009 | WO2009035884A1 Method of using pressure signatures to predict injection well anomalies |
| 03/19/2009 | WO2009035837A1 Downhole valve for preventing zonal cross-flow |
| 03/19/2009 | WO2009035455A1 Pressure compensator for drill bit |
| 03/19/2009 | WO2009018019A3 Drainage of heavy oil reservoir via horizontal wellbore |
| 03/19/2009 | WO2009014821A3 Method for recovering crude oil from a subterranean formation |
| 03/19/2009 | WO2009009196A3 System and method for monitoring physical condition of production well equipment and controlling well production |
| 03/19/2009 | WO2009005876A3 System and method for monitoring and controlling production from wells |
| 03/19/2009 | WO2008154555A3 Method and apparatus for lengthening a pipe string and installing a pipe string in a borehole |
| 03/19/2009 | WO2008148613A4 Power transmission system for use with downhole equipment |
| 03/19/2009 | WO2008135858A3 Oil well completion tool having severable tubings string barrier disc |
| 03/19/2009 | US20090071658 Valve |
| 03/19/2009 | US20090071656 Method of running a tubing hanger and internal tree cap simultaneously |
| 03/19/2009 | US20090071652 In situ heat treatment from multiple layers of a tar sands formation |
| 03/19/2009 | US20090071651 system for completing water injector wells |
| 03/19/2009 | US20090071650 Foamed cement compositions comprising oil-swellable particles and methods of use |
| 03/19/2009 | US20090071648 Heavy oil recovery with fluid water and carbon dioxide |
| 03/19/2009 | US20090071647 Thermal processes for subsurface formations |
| 03/19/2009 | US20090071646 Apparatus for treating fluid streams |
| 03/19/2009 | US20090071640 Device for cutting a vertical slot-like unloading opening |