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)
12/2012
12/26/2012EP2536917A2 Valve system
12/26/2012EP2536915A1 Magnets-based tool for pulsing injected liquid
12/26/2012CN202630357U Device for burning and heating associated gases of oilfield casing
12/26/2012CN202628494U Electrical submersible pump exhaust pipe column for oil extraction process
12/26/2012CN202628163U Soft coal seam gas pressure relief pumping extraction device for ground well drilling
12/26/2012CN202628067U Self-cleaning oil-sand separator
12/26/2012CN202628066U Gas well spiral-flow type booster
12/26/2012CN202628065U 油分离器 An oil separator
12/26/2012CN202628064U Pressure relieving device for segmented hydrofracture on coal seam
12/26/2012CN202628063U Automatic multiple ball injector
12/26/2012CN202628062U Large-hole oil extraction system for land
12/26/2012CN202628061U Heating device with double hollow rods
12/26/2012CN202628060U High-shearing injection allocation device for polymer
12/26/2012CN202628059U Concentric double-pipe polymer injection pipe column
12/26/2012CN202628058U Polymer low-shear injection allocator
12/26/2012CN202628057U Device for respectively carrying out pressure regulating and polymer injection on wells one by one
12/26/2012CN202628056U Full-automatic dosing device for well mouth
12/26/2012CN202628055U Vertical type wellhead automatic control foam draining agent injection device
12/26/2012CN202628054U Remote control automatic foam discharging agent injection device for well head
12/26/2012CN202628053U Integrated oil recovery and water injection pipe
12/26/2012CN202628052U Differential-pressure decomposition throttling water distributor
12/26/2012CN202628051U Physical simulation device for substitution of coal bed methane by carbon dioxide
12/26/2012CN202628050U Automatic sump oil and sewage recovery device
12/26/2012CN202628049U High-temperature-resistant delaying electronic igniter
12/26/2012CN202628048U Perforation gun with inner blind hole and outer blind hole
12/26/2012CN202628047U Encoding type classification perforation instrument
12/26/2012CN202628046U Sectional sand blasting perforation sleeve fracturing string of continuous oil tube
12/26/2012CN202628045U Oil well filling sand prevention valve switch
12/26/2012CN202628044U Oil pumping unit for ocean platform
12/26/2012CN202628043U Anti-theft device for press lever of oil pumping unit
12/26/2012CN202628042U Floating balance pumping unit
12/26/2012CN202628041U Oil pumping or water pumping device with cyclone desander
12/26/2012CN202628040U Dual-pipe column electric pump oil production device
12/26/2012CN202628039U Laminated spiral lifting equipment
12/26/2012CN202628021U Controllable blanking plug
12/26/2012CN202628002U Vacuum degasser
12/26/2012CN202620963U Gas-residue separating device
12/26/2012CN1840904B Ultra-low speed big torsional moment special-shape motor dragging and tower type high-efficiency low-consumption intelligent pumping unit
12/26/2012CN102844521A Prevention, actuation and control of deployment of memory-shape polymer foam-based expandables
12/26/2012CN102844519A Jacking units and bellows for down hole intervention tools
12/26/2012CN102840316A Reduction gearbox with low output rotating speed for pumping unit
12/26/2012CN102840130A High-water-content sucker-rod pump well self-help separation lubrication eccentric wear prevention device and method
12/26/2012CN102839960A Oil well metering and separating device
12/26/2012CN102839959A Longitudinally superposed developing two-strata oil reservoir well pattern, and arrangement method of two-strata oil reservoir well pattern
12/26/2012CN102839958A Longitudinally superposed developing three-strata oil reservoir well pattern and deployment method thereof
12/26/2012CN102839957A Pulse detonation fracturing device for ultra high-temperature high-pressure well
12/26/2012CN102839956A Sliding sleeve type crushing assembly, device using assembly and using method of device
12/26/2012CN102839955A Hierarchical metering and filling device for steam injection well
12/26/2012CN102839954A Method for achieving separated layer water distribution by pressure pulse
12/26/2012CN102839953A Method for controlling injection flow through pressure test
12/26/2012CN102839952A Device and method for data transmission during underground integrated communication
12/26/2012CN102839951A Production tubular column for rhythm oil layer gravity gas drive and method thereof
12/26/2012CN102839950A Tubular column for process of oil production by layer of oil well
12/26/2012CN102839949A Intelligent type oil pumping machine
12/26/2012CN102839948A Spiral flow drainage gas recovery device for natural gas extraction
12/26/2012CN102839947A Subsurface electric control stepless position adjusting structure
12/26/2012CN102839946A Novel oil pump
12/26/2012CN102839945A Movable oil fishing vehicle
12/26/2012CN102839944A Sliding sleeve type fracturing module, device including the module and method of using the device
12/26/2012CN102839942A Swabbing tool of oil-water well sleeve
12/26/2012CN102839920A Multi-segment transforming tubular column for horizontal well and use method for same
12/26/2012CN102838060A Tower type oil pumping unit relocation device
12/26/2012CN102836580A Impeller type fiber ball filter
12/26/2012CN102400664B Well completion process method for increasing gas production of ground horizontally butted well of soft coal stratum
12/26/2012CN102242625B Method for improving recovery ratio of crude oil of oil deposit after polymer flooding
12/26/2012CN102172490B Foam flooding high-pressure gas quantitative injector
12/26/2012CN101922287B Method for making natural gas by underground coal bed microorganism
12/26/2012CN101881151B Rapid solution construction method for rock salt cavity
12/26/2012CN101845947B High-temperature high-pressure perforation-flow efficiency detecting system
12/26/2012CN101832122B Three-pressure state perforation experiment target
12/26/2012CN101824978B High accuracy oriented perforator
12/26/2012CN101705809B Segmented current controlling method of current controlling filter pipe column of oil-gas well having sand control pipe
12/26/2012CN101498199B Controllable liquid injection pipe and controllable liquid injection method convenient for downhole and uplifting
12/26/2012CN101463719B Flow control device of high-efficiency flow control screen pipe
12/26/2012CN101382066B Water-bearing coal seam water control igniter
12/26/2012CN101187303B Novel pumping machine
12/25/2012US8338341 Process for the production of a granule of a coated oxidizing compound such granule and uses of the granule
12/25/2012US8336632 System and method for direct drive pump
12/25/2012US8336631 Split stream oilfield pumping systems
12/25/2012US8336625 Fracturing/gravel packing tool with variable direction and exposure exit ports
12/25/2012US8336624 Squeeze process for reactivation of well treatment fluids containing a water-insoluble adsorbent
12/25/2012US8336623 Process for dispersing nanocatalysts into petroleum-bearing formations
12/25/2012US8336621 Energy efficient, low emissions shale oil recovery process
12/25/2012US8336619 Downhole apparatus with a swellable mantle
12/25/2012US8336618 Method and apparatus for isolating tubing with a swellable seal
12/25/2012US8336613 Back pressured hydraulic pump for sucker rod
12/25/2012US8336437 Perforating gun assembly and method for controlling wellbore pressure regimes during perforating
12/23/2012CA2779968A1 Oil containment system
12/23/2012CA2779121A1 Recompaction of sand reservoirs
12/22/2012CA2781179A1 Process for obtaining viscous mineral oil from an underground deposit
12/22/2012CA2780570A1 Monitoring and control of unit operations for generating steam from produced water
12/20/2012WO2012174255A1 Enhanced crude oil recovery using metal silicides
12/20/2012WO2012174118A1 Proppants for removal of contaminants from fluid streams and methods of using same
12/20/2012WO2012174065A1 Heterogeneous proppant placement in a fracture with removable extrametrical material fill
12/20/2012WO2012174050A1 Methods and apparatus for determining fluid parameters
12/20/2012WO2012173948A2 Additives for improving hydrocarbon recovery
12/20/2012WO2012173921A2 Electromagnetic heat treatment providing enhanced oil recovery
12/20/2012WO2012173918A1 Apparatus for the sublimation or pyrolysis of hydrocarbons using rf energy
12/20/2012WO2012173860A2 Time-delay fluids for wellbore cleanup
12/20/2012WO2012173834A2 Temperature resistant downhole elastomeric device
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