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
10/04/2012WO2011160801A3 Method and apparatus for closing or securing a well
10/04/2012US20120250208 Electronic Switch and Circuit for Select-Fire Perforating Guns
10/04/2012US20120247785 Hydraulically operated wellbore liquid lift using casing gas as energy source
10/04/2012US20120247781 Subsea hydrocarbon recovery
10/04/2012US20120247779 Inhibiting liquid loading, corrosion and/or scaling in oilfield tubulars
10/04/2012US20120247778 Completion Fluid with Friction Reduction
10/04/2012US20120247777 Methods for supplying a chemical within a subterranean formation
10/04/2012US20120247776 Hydrocarbon-Based Fracturing Fluid Compositions, Methods Of Preparation And Methods Of Use
10/04/2012US20120247775 Downhole tool with pumpable section
10/04/2012US20120247774 Slow release breaker treatment fluids and their associated methods of use
10/04/2012US20120247773 Method for managing channeling in geothermal recovery of hydrocarbon reservoirs
10/04/2012US20120247772 Method for Isolating and Completing Multi-Zone Gravel Packs
10/04/2012US20120247771 Perforating gun and arming method
10/04/2012US20120247769 Selectable, internally oriented and/or integrally transportable explosive assemblies
10/04/2012US20120247765 High Permeability Frac Proppant
10/04/2012US20120247764 Proppant pillar placement in a fracture with high solid content fluid
10/04/2012US20120247763 Biomass-based oil field chemicals
10/04/2012US20120247762 Anti-Channeling Pack-Off Particles Used in a Production Section of an Oil-Gas Well, and Completion Method and Production Method Using Such Particles
10/04/2012US20120247761 Apparatus and Method for Completing Wells Using Slurry Containing a Shape-Memory Material Particles
10/04/2012US20120247760 Dual injection points in sagd
10/04/2012US20120247759 Formulation and method of use for exploitation of heavy and extra heavy oil wells
10/04/2012US20120247758 Method and apparatus to treat well stimulation fluids in-situ
10/04/2012US20120247757 Downhole Oscillator
10/04/2012DE102011007617B3 Verfahren zum Fördern von Kohlenwasserstoffverbindungen, insbesondere Erdöl, aus unterirdischen Ölsand-Lagerstätten A method for conveying hydrocarbon compounds, especially oil from subterranean oil sand deposits
10/04/2012DE102010008779B4 Vorrichtung und Verfahren zur Gewinnung, insbesondere In-Situ-Gewinnung, einer kohlenstoffhaltigen Substanz aus einer unterirdischen Lagerstätte Apparatus and method for acquisition, especially in-situ extraction, a carbonaceous substance from a subterranean formation
10/04/2012CA2831939A1 Biomass-based oil field chemicals
10/04/2012CA2831902A1 Biomass-enhanced natural gas from coal formations
10/04/2012CA2831718A1 Downhole pressure compensating device
10/04/2012CA2831555A1 System for protecting against undersea oil spills
10/04/2012CA2831451A1 Apparatus and method for completing wells using slurry containing a shape-memory material particles
10/04/2012CA2831228A1 Esp with offset laterally loaded bearings
10/04/2012CA2830409A1 High permeability frac proppant
10/04/2012CA2828623A1 Subsea hydrocarbon recovery
10/04/2012CA2827772A1 Dual injection points in sagd
10/03/2012EP2505971A2 Pump controller with multiphase measurement
10/03/2012EP2505773A1 Downhole pressure compensating device
10/03/2012EP2504526A2 Simulating subterranean fracture propagation
10/03/2012EP2504525A2 Refining information on subterranean fractures
10/03/2012EP2504524A2 Probabilistic earth model for subterranean fracture simulation
10/03/2012EP2504523A2 Probabilistic simulation of subterranean fracture propagation
10/03/2012EP2504522A2 Simulating injection treatments from multiple wells
10/03/2012CN202472289U Energy-saving oil production controller
10/03/2012CN202471674U Flexibly-loaded water-sac system for three-dimensional simulated experimental table
10/03/2012CN202469440U Beam pumping unit crank balancing piece safety shielding case
10/03/2012CN202469427U Shoulder-carrying hand-pressing-type maintenance device for beam hanger steel wire rope of pumping unit
10/03/2012CN202468925U A speed reducer provided with double projecting shafts on the same side and used for a framed oil pumping unit
10/03/2012CN202468881U Forward and reverse direction-changing speed reducer of oil pumping unit
10/03/2012CN202468803U Electromagnetic drum type brake for oil pumping machine
10/03/2012CN202468774U External holding type dead brake device of beam pumping unit
10/03/2012CN202468761U Electromagnetic power loss clutch of oil pumping unit
10/03/2012CN202468273U Boosting pump capable of preventing oil leakage of connecting rod
10/03/2012CN202468256U Computer-control-based intermittent starter of oil pumping unit
10/03/2012CN202467827U Underground stratification direct reading tester
10/03/2012CN202467804U On-site water shearing and re-injecting device for producing well
10/03/2012CN202467803U Assembling-type metering separator
10/03/2012CN202467802U Helical blade type ground anchor
10/03/2012CN202467801U Pipe manifold system for sand blender
10/03/2012CN202467800U Injection and extraction integrated lifting system
10/03/2012CN202467799U Profile control and water shutoff combination device for thick oil horizontal well of screen pipe completion
10/03/2012CN202467798U Automatic foam rod adding and discharging device of natural gas well foam water pumping gas production
10/03/2012CN202467797U Multifunctional dosing tank for ground oil well
10/03/2012CN202467796U Sub-divisional water injection ball-launching profile control integrated pipe post for oil field water injection well
10/03/2012CN202467795U Water distributor special for separated injection, ball injection and profile control of water injection well
10/03/2012CN202467794U Hollow water distributor preventing scaling blockage
10/03/2012CN202467793U Multifunctional sand prevention choke device
10/03/2012CN202467792U Pressure generating device
10/03/2012CN202467791U Powder charge structure of multistage compound perforation device
10/03/2012CN202467790U Detachable wellhead sand taking device for oil well
10/03/2012CN202467789U Horizontal double-chain pulley guide long constant-speed balancing oil pumping machine
10/03/2012CN202467788U Combined lifting system of oil well
10/03/2012CN202467787U Walking-beam type bivariant energy-saving oil pumping unit
10/03/2012CN202467786U Wheel axle type pumping unit
10/03/2012CN202467785U Oil pumping system
10/03/2012CN202467784U Oil recovery device of pumping well
10/03/2012CN202467783U Lateral jacking type balancing weight adjusting device of pumping unit
10/03/2012CN202467782U Electromagnetic anti-wax oil production device
10/03/2012CN202467781U Oil production device
10/03/2012CN202467780U Multistage automatic negative-pressure oil exploitation tool
10/03/2012CN202467779U Crude oil lifting system
10/03/2012CN202467778U Equalizing-beam mobile counter weight type energy-saving oil pumping unit
10/03/2012CN202467777U Hydraulic energy-saving beam-pumping unit
10/03/2012CN202467776U Portal type hydraulic energy-saving oil pumping machine
10/03/2012CN202467775U Intelligent supercharging one-way fixed displacement device of oil field sleeve machine
10/03/2012CN202467774U Beam pumping unit capable of assisting crank in multi-speed dynamic balance
10/03/2012CN202467773U Long-force-arm numerical control energy-saving pumping unit
10/03/2012CN202467772U Double-level planet speed reducing oil pumping unit with built-in winding drum
10/03/2012CN202467771U Oil pumping machine having changeable pulley and starting booster
10/03/2012CN202467770U A power underneath-type main frame of a tower-type twin-well oil pumping unit
10/03/2012CN202467769U Electric push rod bilateral well avoiding device for tower-type oil pumping unit
10/03/2012CN202467751U Layered water injection blanking plug
10/03/2012CN202467685U Connection pipe for high-pressure water injection flow meter
10/03/2012CN1882760B Wellbore gravel packing apparatus and method
10/03/2012CN102713382A Hydraulic unloading valve
10/03/2012CN102713139A Hydrocarbons
10/03/2012CN102713137A Chemical diversion technique
10/03/2012CN102713134A Device for applying an expandable skirt having application diameter control upon advance
10/03/2012CN102713091A Deep-well pump system
10/03/2012CN102705168A Method for mining shale gas energy in hydrofracturing mode for power supply and irrigation of wind power generation system
10/03/2012CN102704924A Effective dry layer determining method and device
10/03/2012CN102704923A Underground physical simulation test device for horizontal well
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