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)
11/2012
11/22/2012WO2012158145A1 Method for electrokinetic prevention of scale deposition in oil producing well bores
11/22/2012WO2012156495A2 Method for injecting low salinity water
11/22/2012WO2012156434A2 Method and system for protecting a conduit in an annular space around a well casing
11/22/2012WO2012156320A1 Device for attaching a first element to a retaining flange of a second element, associated installation and method
11/22/2012WO2012155248A1 Pressure assisted oil recovery
11/22/2012WO2012129029A3 Multiple liner hanger assembly
11/22/2012WO2012106640A3 Connection cartridge for downhole string
11/22/2012WO2012096738A3 Gravel packing in lateral wellbore
11/22/2012WO2012078705A3 Apparatus and methods for enhanced well control in slim completions
11/22/2012WO2011137892A3 Collecting tank, system comprising collecting tank and multi-phase pumps, and method for separating and dividing up a multi-phase mixture
11/22/2012WO2011120959A3 An actuator device
11/22/2012WO2011089405A3 Multi-phase conductor shoe for use with electrical submersible pump
11/22/2012US20120294114 Acoustic telemetry of subsea measurements from an offshore well
11/22/2012US20120292116 Vortex Controlled Variable Flow Resistance Device and Related Tools and Methods
11/22/2012US20120292055 Pressure assisted oil recovery
11/22/2012US20120292051 Seal around braided cable
11/22/2012US20120292043 Downhole tools
11/22/2012US20120292037 Adjustment and restraint system for subsea flex joint
11/22/2012US20120292032 Wellbore treatment apparatus and method
11/22/2012US20120292031 Hydraulic fracturing methods and well casing plugs
11/22/2012US20120292030 System and method for pinpoint fracturing initiation using acids in open hole wellbores
11/22/2012US20120292029 Linear pressure reducer for regulating injection pressure in an enhanced oil recovery system
11/22/2012US20120292026 Systems and methods for producing oil and/or gas
11/22/2012US20120292025 Systems and methods for producing oil and/or gas
11/22/2012US20120292022 Composition for improving oil recovery including n-lauroyl amino acid-based compounds and microbes
11/22/2012US20120292020 Vortex Controlled Variable Flow Resistance Device and Related Tools and Methods
11/22/2012US20120292019 Vortex Controlled Variable Flow Resistance Device and Related Tools and Methods
11/22/2012US20120292018 Vortex Controlled Variable Flow Resistance Device and Related Tools and Methods
11/22/2012US20120292012 Desalination subsurface feedwater supply and brine disposal
11/22/2012US20120292011 Crude oil production equipment
11/22/2012US20120292009 Method and Apparatus for Joining Members for Downhole and High Temperature Applications
11/22/2012CA2841688A1 Pressure assisted oil recovery
11/22/2012CA2836064A1 Enhanced foam stability applications and methods
11/22/2012CA2835980A1 Altering a composition at a location accessed through an elongate conduit
11/22/2012CA2835638A1 Seal around braided cable
11/22/2012CA2835507A1 Method for injecting low salinity water
11/22/2012CA2835352A1 Surfactants for enhanced oil recovery
11/22/2012CA2835228A1 Method and system for protecting a conduit in an annular space around a well casing
11/22/2012CA2834727A1 Diffuser bump vane profile
11/22/2012CA2834059A1 Tubular cutting with debris filtration
11/22/2012CA2819664A1 Pressure assisted oil recovery
11/22/2012CA2800746A1 Pressure assisted oil recovery
11/21/2012CN202548598U High-accuracy energy-saving pumping unit control system
11/21/2012CN202545691U Low-noise oil pumping speed reducer
11/21/2012CN202545210U Shutdown safety protective device and anti-reversion mechanism mating with same for use
11/21/2012CN202544832U Oil and sand separation device for sand sweeping type wellhead
11/21/2012CN202544831U Oil-water two-phase simulation experimental device
11/21/2012CN202544830U Fracturing blender truck for oil field or coal bed gas mining
11/21/2012CN202544829U Drivepipe sliding sleeve
11/21/2012CN202544828U Multi-section sliding sleeve type abrasive perforating and fracturing tool
11/21/2012CN202544827U Thermal recovery furnace for heavy oil wells
11/21/2012CN202544826U Movable methyl alcohol filling device
11/21/2012CN202544825U Flow control device for ceramic water faucet
11/21/2012CN202544824U Concentric double-pipe hierarchical injection pipe column
11/21/2012CN202544823U Well field leaching solution control device
11/21/2012CN202544822U Novel welding-free clamping device
11/21/2012CN202544821U Return water filter of metering station
11/21/2012CN202544820U Pulling device for mule-head pin of mechanical oil pumping machine
11/21/2012CN202544819U Lift platform type oil pumping device
11/21/2012CN202544818U Safe and energy-saving transmission of oil field diesel engine or motor driven oil pumping machine
11/21/2012CN202544817U Crude oil dissolved gas underground collection device
11/21/2012CN202544816U Twin-well parallel four-connecting-rod oil pumping unit
11/21/2012CN202544815U Exhaust string for deep-drawing process well
11/21/2012CN202544808U Anti-theft emission-reducing sleeve placement device
11/21/2012CN202544805U Intelligent micro steady-flow water distribution valve group
11/21/2012CN202544799U Blowout prevention device for safety drilling in coal bed
11/21/2012CN202544795U Underground well opening back connecting device
11/21/2012CN202544752U High pressure jet device
11/21/2012CN102791957A Apparatus and method for controlling fluid flow between formations and wellbores
11/21/2012CN102789183A Control circuit of electric control fracturing switch and method for controlling electric control fracturing switch
11/21/2012CN102787836A Liquid reinjection system for oil-gas mixed transportation
11/21/2012CN102787835A Gas well underground spiral gas-liquid separation liquid drainage and gas production device
11/21/2012CN102787834A Electric control fracturing switch with secondary driving device and control method of electric control fracturing switch
11/21/2012CN102787833A Hydraulic fracturing surging method for bedrock well and system device thereof
11/21/2012CN102787832A Intelligent profile control infection system
11/21/2012CN102787831A Three-phase longitudinal support diversion wing-type centralizing rod
11/21/2012CN102787830A Method and device for exploiting deep sea combustible ice
11/21/2012CN102787829A Fracturing and pump-free oil production integral process pipe column and operating method thereof
11/21/2012CN102787828A Method for integrating segregated completion and acid cleaning inflated packing of horizontal well
11/21/2012CN102787824A Tool and method for injecting cement into top of horizontal well screen pipe without drilling and plugging
11/21/2012CN101881149B Heat injection drilling and sealing method of heating coalbed
11/21/2012CN101818637B Method for improving recovery rate of thick massive viscous oil reservoir by controlling burning gas injection speed
11/21/2012CN101806201B Self balance energy storage oil extractor
11/21/2012CN101769271B Deep-well oil-extraction external flow-channel direct and reverse circulation freely-throwing jet injector oil production method and device
11/21/2012CN101748996B Energy-saving oil pumping mechanism used for oil field
11/21/2012CN101539002B Flexible automatic reverse intelligent oil pumping machine
11/21/2012CN101509366B Weight dropper machine controlled door case type petroleum pumping unit
11/21/2012CN101403289B Gravel pre-filling sand prevention pipe
11/20/2012US8313152 Recovery of bitumen by hydraulic excavation
11/20/2012US8312931 Flow restriction device
11/20/2012US8312929 Method for single-stage treatment of siliceous subterranean formations
11/20/2012US8312928 Apparatus and methods for the recovery of hydrocarbonaceous and additional products from oil shale and oil sands
11/20/2012US8312927 Apparatus and methods for adjusting operational parameters to recover hydrocarbonaceous and additional products from oil shale and sands
11/20/2012US8312926 Method for reducing thermal loss in a formation
11/20/2012US8312924 Method and apparatus to treat a well with high energy density fluid
11/20/2012US8312923 Measuring a characteristic of a well proximate a region to be gravel packed
11/20/2012US8312922 Metal-to-metal seal with travel seal bands
11/20/2012CA2778135A1 Solvent assisted startup techniques for in situ bitumen recovery with sagd well pairs, infill wells or step-out wells
11/20/2012CA2740941A1 Process for solvent assisted in situ bitumen recovery startup
11/20/2012CA2735427C Remote actuation of downhole well tools
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