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)
10/2012
10/24/2012CN202500533U Double-bellows gas lift valve with set pressure range valves
10/24/2012CN202500526U Surface valve used for oil and gas exploitation fracturing
10/24/2012CN1932237B Method for exploiting heavy oil, gas or pitch
10/24/2012CN102753784A Method and apparatus for autonomous downhole fluid selection with pathway dependent resistance system
10/24/2012CN102753658A Additive and method for removal of impurities formed due to sulfur compounds in crude oils containing calcium naphthenate
10/24/2012CN102749930A Calibration positioning instrument and positioning method for oilfield wellhead
10/24/2012CN102748065A Method for extracting gas of blank zone of working face with large mining length
10/24/2012CN102748017A Self-support fracture testing and analyzing device and method for oil-gas field development
10/24/2012CN102748007A Well testing analytical method and device
10/24/2012CN102748003A Monitoring and automatic control of operating parameters for a downhole oil/water separation system
10/24/2012CN102748002A Method for extinguishing underground gasification furnace of coal
10/24/2012CN102748001A Hydraulic sand-blasting, perforating, sand-filling, layering and fracturing technology for continuous oil pipe
10/24/2012CN102748000A Pneumatic charging and sealing device
10/24/2012CN102747999A Method for developing coal bed gas by deeply penetrating radial horizontal well by hydraulic power
10/24/2012CN102747998A Shale gas production increasing method and shale gas production increasing equipment
10/24/2012CN102747997A Fire-flooding exploitation method used in later period of steam assisted gravity drainage (SAGD) of heavy oil reservoir
10/24/2012CN102747996A Carbon dioxide foam injecting device of oil well
10/24/2012CN102747995A Separation type electric-control continuously-adjustable filling device of polymer injection well
10/24/2012CN102747994A Liquid passing type electric-control layered polymer filling device
10/24/2012CN102747993A Liquid foaming agent injection method
10/24/2012CN102747992A Airtight no-tank electric control valve double-control water injection device and water injection method thereof
10/24/2012CN102747991A Method for determining single-layer output of commingled producing well
10/24/2012CN102747990A Movable type casing gas collection device
10/24/2012CN102747989A Oil well casing gas collecting device
10/24/2012CN102747988A Half-beam type oil pumping unit
10/24/2012CN102747987A Sleeve gas collection device and method
10/24/2012CN102747986A Bended end column inertialess load oil pumping machine
10/24/2012CN102747967A Multi-stage segmented release water exploration pipe column and method for casing well completion multi-stage fractured horizontal well
10/24/2012CN102743898A Ducted two-stage flow deflector type oil-water separator and its application method
10/24/2012CN101775974B Method for exploiting coal bed methane (CBM) by water transportation and pressure relief in butted well
10/24/2012CN101718190B Completed well body structure with temporary plugging function screen pipe and well completion method for suspending screen pipe at tail pipe
10/24/2012CN101718189B Completed well body structure with temporary plugging function screen pipe and well completion method for injecting cement on top
10/24/2012CN101421487B Gravel pack crossover tool with single position multi-function capability
10/24/2012CN101382064B Underground forced oxidation and ignition technology for coal
10/24/2012CN101372889B Novel horizontal well sand preventing well completion structure
10/23/2012US8293687 Compositions and processes for fracturing subterranean formations
10/23/2012US8291987 High capacity running tool and method of setting a packoff seal
10/23/2012US8291983 Intake for shrouded electric submersible pump assembly
10/23/2012US8291979 Controlling flows in a well
10/23/2012US8291978 Methods of limiting leak off and damage in hydraulic fractures
10/23/2012US8291976 Fluid flow control device
10/23/2012US8291974 Method and system for accessing subterranean deposits from the surface and tools therefor
10/23/2012US8291972 Sand control screen assembly and method for use of same
10/23/2012US8291971 Crimped end wrapped on pipe well screen
10/23/2012CA2698898C Accelerated start-up using solvent injection
10/23/2012CA2672852C Real-time automated heterogeneous proppant placement
10/23/2012CA2650199C Method of heating sub sea esp pumping systems
10/23/2012CA2646466C Method for reducing diameter reduction near ends of expanded tubulars
10/23/2012CA2646448C Method for reducing diameter reduction near ends of expanded tubulars
10/23/2012CA2523092C Systems and methods using a continuously variable transmission to control one or more system components
10/18/2012WO2012142259A2 Self-propelled simultaneous platform
10/18/2012WO2012141983A2 Above ground fluid storage system
10/18/2012WO2012141685A1 Opening a conduit cemented in a well
10/18/2012WO2012140092A1 Device for measuring and controlling on-line viscosity at high pressure
10/18/2012WO2012139151A1 Method for production of proppants
10/18/2012WO2012106017A3 Apparatus and methods for tracking the location of fracturing fluid in a subterranean formation
10/18/2012WO2012091926A3 Method and apparatus for completing a multi-stage well
10/18/2012US20120261249 Subterranean Well Production Saltwater Evaporation Station
10/18/2012US20120261142 Method of creating carbonic acid within an oil matrix
10/18/2012US20120261141 Method and apparatus for utilizing a catalyst occurring naturally in an oil field
10/18/2012US20120261135 Shape-Based Metrics In Reservoir Characterization
10/18/2012US20120261130 Method and apparatus for multilateral construction and intervention of a well
10/18/2012US20120261129 Electromagnetic Wave Treatment Method And Promoter
10/18/2012US20120261128 Oil Shale Processing
10/18/2012US20120261126 Methods and Compositions for Controlling Formation Fines and Reducing Proppant Flow-Back
10/18/2012US20120261125 Horizontal In-Well Treatment System and Source Area Bypass System and Method For Groundwater Remediation
10/18/2012US20120261124 Recovery of oil
10/18/2012US20120261123 Method and apparatus for controlling a volume of hydrogen input and the amount of oil taken out of a naturally occurring oil filed
10/18/2012US20120261122 Method and apparatus for removing low viscosity oil from an oil field
10/18/2012US20120261121 Method of reducing oil beneath the ground
10/18/2012US20120261120 Process for the recovery of heavy oil from an underground reservoir
10/18/2012US20120261119 Method and apparatus for utilizing carbon dioxide in situ
10/18/2012US20120261118 Method and apparatus to transport subterranean oil to the surface
10/18/2012US20120261117 Systems and Methods of Microbial Enhanced Oil Recovery
10/18/2012US20120261116 Expandable Liner Hanger with Helically Shaped Slips
10/18/2012US20120261111 Down-hole Liquid Level Control for Hydrocarbon Wells
10/18/2012DE102011001987A1 Verfahren und Vorrichtung zum Einschließen eines Bohrlochs Method and apparatus for enclosing a borehole
10/18/2012CA2833628A1 Method for production of proppants
10/18/2012CA2833247A1 Above ground fluid storage system
10/18/2012CA2833012A1 Method of recovering oil or gas and treating the resulting produced water
10/18/2012CA2831862A1 Device for measuring and controlling on-line viscosity at high pressure
10/18/2012CA2831251A1 Systems and methods for hydraulic fracture characterization using microseismic event data
10/18/2012CA2831077A1 Self-propelled simultaneous platform
10/18/2012CA2830927A1 Opening a conduit cemented in a well
10/18/2012CA2774541A1 Method and apparatus for controlling a volume of hydrogen input and the amount of oil taken out of a naturally occuring oil field
10/18/2012CA2774539A1 Method and apparatus for utilizing carbon dioxide in situ
10/18/2012CA2774538A1 Method and apparatus for removing low viscosity oil from an oil field
10/18/2012CA2774531A1 Method of reducing oil beneath the ground
10/18/2012CA2774528A1 System for reducing oil beneath the ground
10/17/2012EP2510238A1 Pump system
10/17/2012EP2510190A2 Wirelessly actuated hydrostatic set module
10/17/2012EP2510188A2 Device and method for the recovery, in particular in situ recovery, of a carbonaceous substance from subterranean formations
10/17/2012EP2510187A2 Fluid flow control device
10/17/2012EP2510070A1 A biodegradable set retarder for a cement composition
10/17/2012CN202494133U Oil-field electrical heating igniter
10/17/2012CN202493250U Layer-changing sandblasting device with retainable drift diameter
10/17/2012CN202493249U Double-hole crushing ball seat
10/17/2012CN202493248U Water distributor for oil field oil well ground water injection
10/17/2012CN202493247U Longitudinal vibration damper reducing impact vibratory force in perforation moment
10/17/2012CN202493246U Control device for multi-stage perforator of oil-gas well
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