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)
08/2012
08/15/2012CN102639205A Separation apparatus for tubular flow-through apparatuses
08/15/2012CN102637004A Intelligent energy-saving device of pumping unit
08/15/2012CN102635846A Gradual vapouration type high-energy-efficiency direct-flow steam injection boiler and method
08/15/2012CN102635655A Oil pumping unit brake locking device
08/15/2012CN102635394A Gas, water and coal separation device of coal-mine gas spray hole
08/15/2012CN102635388A Interaction permeability-increasing method of pre-splitting blasting and hydraulic cracking of coal seam
08/15/2012CN102635351A Method for determining fracture pressure of hydraulic fracturing on basis of geological strength index
08/15/2012CN102635349A Method for measuring water in oil-water separation and device for same
08/15/2012CN102635346A Movable ignition system for UCG (underground coal gasification)
08/15/2012CN102635345A Underground gasification visualized ignition and monitoring device of coal
08/15/2012CN102635344A Composite blocking-removal method for improving flow conductivity of triple-low sandstone reservoir
08/15/2012CN102635343A Method for lifting heavy oil through shaft in heavy oil cold production
08/15/2012CN102635342A Thermo-chemical oil extraction method of offshore thickened oil
08/15/2012CN102635341A Circular and automatic water replenishing and drainage and production equipment for coal-bed gas well
08/15/2012CN102635340A Novel high-efficient testing and regulating process utilizing optical fiber cable
08/15/2012CN102635339A Immovable pumping unit
08/15/2012CN102635338A Safety protection device for bailing device in flexible bar of intelligent intermittent bailing type oil pumping unit
08/15/2012CN102635337A Rapid gas production method implemented after coiled tubing is put in gas well
08/15/2012CN102635336A Pumping unit with concrete-precast load-bearing frame
08/15/2012CN102635335A Well structure for delaying casing damage on fault
08/15/2012CN102635334A Wind-power hydraulic oil pumping machine
08/15/2012CN102635333A Single-wheel beam-pumping unit capable of adjusting balance through steel wire rope
08/15/2012CN102634332A Blockage remover for decompression and steam injection in high clay content sandstone oil reservoir
08/15/2012CN101915073B In situ leaching injection process
08/15/2012CN101514620B Wheel type oil pumping unit
08/14/2012US8242312 Urethane and urea fluorosurfactants
08/14/2012US8242060 Stable solutions of zirconium hydroxyalkylethylene diamine complex and use in oil field applications
08/14/2012US8242059 Wellbore fluid
08/14/2012US8240774 Solution mining and in situ treatment of nahcolite beds
08/14/2012US8240386 Method for treating well bore with polyurethane composition
08/14/2012US8240383 Methods for making and using UV/EB cured precured particles for use as proppants
08/14/2012US8240382 Constant pressure open hole water packing system
08/14/2012US8240381 Draining a reservoir with an interbedded layer
08/14/2012US8240380 Polymers and nanoparticles formulations with shear-thickening and shear-gelling properties for oilfield applications
08/14/2012US8240379 Shear-activated viscoelastic surfactant fluid and method
08/14/2012US8240374 Apparatus and methods for limiting debris flow back into an underground base pipe of an injection well
08/14/2012US8240370 Integrated hydrogen production and hydrocarbon extraction
08/14/2012US8240369 Slot-perforating system for oil, gas and hydro-geological wells
08/14/2012CA2720489C Hydraulically set liner hanger
08/14/2012CA2684230C Water flooding method for secondary hydrocarbon recovery
08/14/2012CA2668389C In situ recovery from a tar sands formation
08/11/2012CA2761321A1 Selective displacement of water in pressure communication with a hydrocarbon reservoir
08/11/2012CA2739953A1 Method for displacement of water from a porous and permeable formation
08/09/2012WO2012106640A2 Connection cartridge for downhole string
08/09/2012WO2012106636A2 Device for verifying detonator connection
08/09/2012WO2012106623A2 Method of corrosion mitigation using nanoparticle additives
08/09/2012WO2012106039A2 Disconnect devices for downhole strings
08/09/2012WO2012106017A2 Apparatus and methods for tracking the location of fracturing fluid in a subterranean formation
08/09/2012WO2012105852A1 Tool and method to plug and abandon a well
08/09/2012WO2012104257A1 System for lining a wellbore
08/09/2012WO2012104256A1 Method and wellbore system
08/09/2012WO2012103623A1 Subsea crude oil and/or gas containment and recovery system and method
08/09/2012WO2012071156A8 Enhanced oil recovery in low permeability reservoirs
08/09/2012WO2012064946A3 Magnetically coupled actuation apparatus and method
08/09/2012WO2012037301A3 Return fluid separator
08/09/2012WO2012033621A4 Method and apparatus for selective acid diversion in matrix acidizing operations
08/09/2012WO2011154984A3 Process for creating artifical permeable layers in substrate for exploitation of geothermal energy
08/09/2012WO2011013056A8 Methods and apparatus for multilateral multistage stimulation of a well
08/09/2012US20120199362 Methods of maintaining sufficient hydrostatic pressure in multiple intervals of a wellbore in a soft formation
08/09/2012US20120199361 System and method for controlling liquid removal operations in a gas-producing well
08/09/2012US20120199359 Pumping module and system
08/09/2012US20120199357 Method of corrosion mitigation using nanoparticle additives
08/09/2012US20120199356 Equipment For Quick Dispersion Of Polyacrylamide Powder For Fracturing Operations
08/09/2012US20120199355 Water flooding method for secondary hydrocarbon recovery
08/09/2012US20120199354 System and Method For Producing Geothermal Energy
08/09/2012US20120199353 Wellbore injection system
08/09/2012US20120199352 Connection cartridge for downhole string
08/09/2012US20120199347 Thermoset particles with enhanced crosslinking, processing for their production, and their use in oil and natural gas drilling applications
08/09/2012US20120199346 Completion assembly
08/09/2012US20120199343 Multistage process for producing mineral oil using microorganisms
08/09/2012US20120199342 Wellbore method and apparatus for completion, production and injection
08/09/2012US20120199031 Device for verifying detonator connection
08/09/2012US20120198988 Perforating gun having self-closing penetration holes
08/09/2012CA2826175A1 Subsea crude oil and/or gas containment and recovery system and method
08/09/2012CA2824839A1 Apparatus and methods for tracking the location of fracturing fluid in a subterranean formation
08/09/2012CA2823816A1 Tool and method to plug and abandon a well
08/08/2012EP2484864A2 Downhole apparatus and method
08/08/2012EP1866519B1 Method of recycling fracturing fluids using a self-degrading foaming composition
08/08/2012CN202370513U Self-operated exhaust device for oil-gas-water three-phase flow logging instrument
08/08/2012CN202370504U Automatic perforating depth correcting device
08/08/2012CN202370498U 多功能计量罐 Multifunctional measuring tank
08/08/2012CN202370495U Sand blasting perforation annular mechanical packing multilayer fracturing tool tubular column for oil-gas well
08/08/2012CN202370494U Pressure relief type guide mechanism for underground testing and controlling meter
08/08/2012CN202370493U Pipe column sand filter cylinder
08/08/2012CN202370492U Gas lift exploitation device for submarine natural gas hydrates
08/08/2012CN202370491U Multi-stage reduction and multi-stage balance oil pumping unit
08/08/2012CN202370490U Fully hydraulic variable stroke energy-saving pumping unit
08/08/2012CN202370489U Parallel double-pipe gas-lift production process pipe column
08/08/2012CN202370488U Full-balance gearwheel oil pumping unit with wireless remote monitoring function
08/08/2012CN202370487U Coalbed methane downhole ultrasonic production increasing and extraction device
08/08/2012CN202370451U Beam hanger
08/08/2012CN202370447U Sliding sleeve-type casting ball multistage acidification technical pipe column
08/08/2012CN102629779A Uninterrupted motive power system for oil pumping machine in oil field
08/08/2012CN102628354A Pore micron-sized oil water distribution recognition and quantification method
08/08/2012CN102628353A Well pattern adjustment and well pattern encryption method applied to on-sea hypotonic oil deposit exploitation
08/08/2012CN102628352A Multi-section fixed point hydraulic fracturing method
08/08/2012CN102628351A Experimental device and method for thick oil water thermal-catalytic cracking under effect of low frequency vibration waves
08/08/2012CN102628350A Propane-injecting shallow heavy oil reservoir exploitation method
08/08/2012CN102628349A Lifting platform type pumping unit
08/08/2012CN102199346B Polysiloxane modified polyurethane for drillable sand screen and preparation method and application thereof
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