Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells › E21B 43 - Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
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)
04/2014
04/10/2014US20140096966 Method and Apparatus for Completion of Heavy Oil Unconsolidated Sand Reservoirs
04/10/2014US20140096965 Methods of Fracturing a Well Using Venturi Section
04/10/2014US20140096962 Steam assisted gravity drainage with added oxygen ("sagdox") in deep reservoirs
04/10/2014US20140096961 Thermal mobilization of heavy hydrocarbon deposits
04/10/2014US20140096960 Use of steam assisted gravity drainage with oxygen ("sagdox") in the recovery of bitumen in thin pay zones
04/10/2014US20140096959 Enhanced hydrocarbon recovery from multiple wells by steam injection of oil sand formations
04/10/2014US20140096958 Method, apparatus and composition to increase recovery of hydrocarbons by reaction of selective oxidizers and fuels in the subterranean environment
04/10/2014US20140096957 Fluid control in reservoir fluid samplilng tools
04/10/2014US20140096954 Method of developing subsurface barriers
04/10/2014US20140096953 Enhanced hydrocarbon recovery from multiple wells by electrical resistive heating of oil sand formations
04/10/2014US20140096952 Enhanced hydrocarbon recovery from a single well by electrical resistive heating of a single inclusion in an oil sand formation
04/10/2014US20140096951 Enhanced hydrocarbon recovery from a single well by electrical resistive heating of multiple inclusions in an oil sand formation
04/10/2014US20140096950 Hydraulic Fracturing Process for Deviated Wellbores
04/10/2014US20140096836 Method and automated system for control of oil well production and modular skid for use in said method
04/10/2014US20140096832 Dual Tank Structure Integrally Supported on a Portable Base Frame
04/10/2014US20140096670 Perforating gun drop sub
04/10/2014DE102012019825A1 Flow medium e.g. low-viscous flow medium for fluttering oil in reservoir, has foam comprising liquid phase and nitrogen carbon dioxide, natural gas and/or associated gas, where volume of foam and nitrogen in medium is specific value
04/10/2014DE102012019824A1 Flow medium used for promotion of liquid medium e.g. oil, comprises specified amount of foam comprising liquid phase and carbon dioxide comprising specified amount of oxygen
04/10/2014DE102012019822A1 Method for conveying liquid or gaseous medium, particularly mineral oil, from its reservoir, involves separating carbon dioxide from flue gas stream, where carbon dioxide is generated by combustion of starting material
04/10/2014DE102012019784A1 Method for hydraulic crack formation in reservoir containing oil and gas, involves pumping fluid for forming cracks by system and producing nitrogen by cryogenic air separation, or by absorption, particularly by pressure swing absorption
04/10/2014DE102012019783A1 Method for conveying highly viscous petroleum into reservoir, involves producing nitrogen in floating body, ship or platform by cryogenic liquid air separation and/or adsorption preferably by pressure change adsorption
04/09/2014EP2716862A1 Method and apparatus for producing hydrocarbons from a multilayer system
04/09/2014EP2716861A1 Method and apparatus for enhanced oil recovery
04/09/2014EP2716731A1 Method for the recovery of hydrocarbons from an oil reservoir
04/09/2014EP2716730A1 Method and device for the recovery of hydrocarbons from an oil reservoir
04/09/2014EP2715062A1 Apparatus and method for operating a subsea compression system
04/09/2014EP2715061A1 A formation penetrating tool
04/09/2014EP2715060A2 Compositions, methods, apparatus, and systems for incorporating bio-derived materials in drilling and hydraulic fracturing
04/09/2014EP2715059A2 Pump system
04/09/2014EP2715058A2 Enzyme enhanced oil recovery
04/09/2014EP2715057A2 Window joint for lateral wellbore construction and method for opening same
04/09/2014EP2714836A2 An enzyme enhanced oil recovery system and a method for operating an underground oil reservoir
04/09/2014CN203535796U Directional remote starter for oil well
04/09/2014CN203535446U Oil pumping unit intelligent control complete equipment
04/09/2014CN203533154U Automatic lubricator for bearing of pumping unit
04/09/2014CN203532652U Special reduction gearbox for walking beam type oil pumping unit
04/09/2014CN203532646U Crank stroke adjusting device
04/09/2014CN203531887U Flow debugging device of water injection well
04/09/2014CN203531885U Movable multi-well single-measurement device
04/09/2014CN203531879U Flying stopping device for carbon dioxide extraction device
04/09/2014CN203531878U Fracturing fluid ignition device
04/09/2014CN203531877U Underground coal mine fracturing connecting device
04/09/2014CN203531876U Fracturing manifold
04/09/2014CN203531875U Ball seat and ball throwing sliding sleeve type segmented fracturing device
04/09/2014CN203531874U Thermal expansion compensator
04/09/2014CN203531873U Anti-corrosion water injection well mouth
04/09/2014CN203531872U Skid-mounted wellhead injection device for oil-gas field development
04/09/2014CN203531871U Device for automatically and remotely controlling multipoint injection of defoaming agents at ground wellheads
04/09/2014CN203531870U Downhole operation tubular column capable of realizing ground control
04/09/2014CN203531869U Water injection pipe column with anti-corrosion inner liner and outer coating
04/09/2014CN203531868U Underground sand-prevention and erosion-prevention composite device
04/09/2014CN203531867U Primary sand prevention letting-in tool and secondary resanding extruding and filling tool of primary sand prevention letting-in tool
04/09/2014CN203531866U Oil pumping unit
04/09/2014CN203531865U Liquid lifting instrument
04/09/2014CN203531864U Controllable hydraulic pumping unit
04/09/2014CN203531863U Digital beam-pumping unit
04/09/2014CN203531862U Double horsehead pumping unit maintaining auxiliary device
04/09/2014CN203531861U Double-gear meshing pumping unit
04/09/2014CN203531860U Auxiliary maintaining device for oil pumping unit horse head part
04/09/2014CN203531859U Beam pumping unit shutdown position adjusting device
04/09/2014CN203531858U Beam pumping unit hair braid length adjusting device
04/09/2014CN203531857U Self-carrying balance block of belt pumping unit
04/09/2014CN203531856U Digital automatic oil extraction equipment
04/09/2014CN203531855U Gas-lift working barrel
04/09/2014CN203531854U Waterpower piston pump easily entering well
04/09/2014CN203531853U Automatic unloader
04/09/2014CN203531852U Novel worm wheel oil pumping unit
04/09/2014CN203531846U Mortise type switching system
04/09/2014CN203531809U High pressure airflow sand adding device
04/09/2014CN203525508U Filter cartridge separator for coal-bed gas, sand, water and oil
04/09/2014CN103717968A Steam generation
04/09/2014CN103711473A Double-circulation relay type method for drilling and completing coal seam composite well
04/09/2014CN103711472A Underground gasification method of hydrocarbon-bearing ore bed
04/09/2014CN103711471A Start-up method for underground gasifier and ground matched system
04/09/2014CN103711470A Well fracturing acidification technique pipe and taking out method thereof
04/09/2014CN103711469A Horizontal well switchable type well cementation staged fracturing oil production technology
04/09/2014CN103711468A Three-phase foam generator used for fracturing and application thereof
04/09/2014CN103711467A Formula for improving recovery ratio of authigenic CO2
04/09/2014CN103711466A Individual main pipe and individual well water distribution system and water distribution process thereof during oilfield water injection process
04/09/2014CN103711465A Single branch tube multiple well water distribution system of oil wells and water distribution process thereof
04/09/2014CN103711464A Single branch tube single well water distribution system used for well water injection process
04/09/2014CN103711463A Single-main-pipe multiple-well water distribution process
04/09/2014CN103711462A Leaching experimental facility for in-situ leaching uranium mining
04/09/2014CN103711461A Method for downhole screen manufacturing
04/09/2014CN103711460A Deep water pipeline multi-circuit bridging system and testing and installing method thereof
04/09/2014CN103711459A Basement-type water surface connecting cylinder type underwater dry oil production device
04/09/2014CN103711458A Linear motor driving device
04/09/2014CN103711457A Design method of six-spud-in wellbore structure
04/09/2014CN103710011A Modified polyacrylamide profile control system as well as preparation and use method thereof
04/09/2014CN102705168B Method for mining shale gas energy in hydrofracturing mode for power supply and irrigation of wind power generation system
04/09/2014CN102505930B Water base fracturing and blocking-removing composite process
04/09/2014CN102434129B Ultra-deepwater offshore oil-gas engineering developing system and mounting method thereof
04/09/2014CN102257241B Well liner segments for in situ petroleum upgrading and recovery, and method of in situ upgrading and recovery
04/09/2014CN102140908B Device and method for evaluating sand prevention performance of sand prevention sieve pipe
04/09/2014CN101864938B Underground ignition technology of combustion drive oil layer by injecting steam
04/09/2014CN101806208B Optimization method for plane well pattern of horizontal well
04/09/2014CN101476454B Double-well sharing oil pumping machine
04/08/2014US8691736 Swellable polymer with cationic sites
04/08/2014US8691734 Method of fracturing with phenothiazine stabilizer
04/08/2014US8691732 Water-based fluid for preventing the formation of W/O emulsions or for resolving W/O emulsions already formed in porous matrices
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