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)
09/2012
09/19/2012CN202441349U Automatic back pressure and overflow-releasing device of water injection well during power failure
09/19/2012CN202441348U Self-feedback water injection well regulating device
09/19/2012CN202441347U Constant-flow water distributor
09/19/2012CN202441346U Novel watering throttler
09/19/2012CN202441345U Sand prevention perforator
09/19/2012CN202441344U Perforation automatic salvo device
09/19/2012CN202441343U Penetration type underwater manifold base structure
09/19/2012CN202441342U Derrick frame type oil pumping unit
09/19/2012CN202441341U Oil well shaft lifting device
09/19/2012CN202441340U Wound type direct drive motor oil pumping unit
09/19/2012CN202441339U Direct drive motor twin-well pumping unit
09/19/2012CN202441338U Multi-frequency overlying balance energy-saving pumping unit
09/19/2012CN202441337U Double-decelerating and double-balancing energy saving oil pumper with positive torque
09/19/2012CN202441336U Twin-well pumping unit returning frame device
09/19/2012CN202441335U Self-cleaning suction device for multi-phase separation
09/19/2012CN202441334U Oil well measuring dosing device
09/19/2012CN202441317U Shock-absorption sealing steam-injection packer
09/19/2012CN202441314U Metal sealing thermal production casing head
09/19/2012CN202441305U Multipurpose wellhead device for stream injection and oil production
09/19/2012CN202441282U polished rod grip for pumping units
09/19/2012CN102686827A Radical trap in oil and gas stimulation operations
09/19/2012CN102686826A Downhole progressive pressurization actuated tool and method of using the same
09/19/2012CN102686708A Method of partially upgrading heavy oil at well-site
09/19/2012CN102684567A Double-power automatic reversible conversion electric dragging device for oil pumping machine and operation method
09/19/2012CN102681461A Automatic switching control system for finding underground water blockage based on RF (Radio Frequency) wireless communication
09/19/2012CN102679529A Device for combusting and heating crude oil by using oilfield casing associated gas
09/19/2012CN102678794A Brake device of pumping unit
09/19/2012CN102678104A Flow-adjustable single-channel storage type plug water-distributing pressure gauge
09/19/2012CN102678098A Lamellar water logging exhausted oil well blocking and dredging combined tapping potential production increase method
09/19/2012CN102678097A Supercritical water oxidation fluid injection production system using nitrogen as protective film and process using same
09/19/2012CN102678096A Hot water assisted gravity drainage method for mining high pour-point oil deposit
09/19/2012CN102678095A Arbitrary reducing sand filtering pipe for special stainless steel net
09/19/2012CN102678094A Vertical type throttling kill manifold for offshore oil production
09/19/2012CN102678093A Vertical cementing manifold for offshore oil production
09/19/2012CN102678092A Method for commonly extracting coal and coal bed gas by up-hole and down-hole joint construction
09/19/2012CN102678091A Experimental simulation method for hydrate production and confining pressure loading and thermal insulation integrated system
09/19/2012CN102678090A Three-dimensional synthesizing and mining simulation device for natural gas hydrate
09/19/2012CN102678089A Mobile counterweight type pumping unit
09/19/2012CN102678082A Drilling riser adapter (11) connecting member possessing submarine operation
09/19/2012CN102676149A Viscoelastic fluid, preparation method thereof and method for treating subsurface formation
09/19/2012CN102676145A High-temperature foaming agent and preparation method thereof
09/19/2012CN102676144A Composition for penetration-driving oil recovery agent and penetration-driving oil recovery agent
09/19/2012CN102671503A Gas and residue separating device
09/19/2012CN102121395B Method for integrated comprehensive management of gas in low-permeability single coal bed
09/19/2012CN102071913B Intelligent online closed-loop pumping unit balance adjustment system
09/19/2012CN101748990B Releasing packer well-washing device
09/19/2012CN101649733B Concentric type integrated test modification water injection technology and device
09/19/2012CN101575965B Perforating explosion-proof gun device
09/18/2012US8267199 Perforating and jet drilling method and apparatus
09/18/2012US8267185 Circulated heated transfer fluid systems used to treat a subsurface formation
09/18/2012US8267179 Connection tool with indexing system
09/18/2012US8267173 Open hole completion apparatus and method for use of same
09/18/2012US8267172 System and method for determining position within a wellbore
09/18/2012US8267171 Apparatus and method of monitoring an alternating current component of a downhole electrical imbalance voltage
09/18/2012US8267170 Offset barrier wells in subsurface formations
09/18/2012US8267169 Methods and apparatus for attaching accessories to sand screen assemblies
09/18/2012CA2692651C Pressure equalizer in thrust chamber electrical submersible pump assembly having dual pressure barriers
09/18/2012CA2667017C Frac-pack casing saver
09/18/2012CA2629384C Flow divider and separation system
09/18/2012CA2603764C Stimulation tool having a sealed ignition system
09/18/2012CA2595686C Soluble diverting agents
09/16/2012CA2771741A1 Downhole system and apparatus incorporating valve assembly with resilient deformable engaging element
09/16/2012CA2771732A1 Multistage production system incorporating valve assembly with collapsible or expandable c-ring
09/15/2012CA2734170A1 Method of injecting solvent into an underground reservoir to aid recovery of hydrocarbons
09/13/2012WO2012122486A1 Methods and apparatus for enhanced recovery of underground resources
09/13/2012WO2012122470A1 Method for charcterizing subsurface formations using fluid pressure response during drilling operations
09/13/2012WO2012122026A2 In situ catalytic upgrading
09/13/2012WO2012121857A1 Expansion cone assembly for setting a liner hanger in a wellbore casing
09/13/2012WO2012121731A1 Systems and methods for monitoring operations data for multiple wells in real-time
09/13/2012WO2012121711A1 A method for accelerating start-up for steam-assisted gravity drainage (sagd) operations
09/13/2012WO2012120278A1 Treatment method for a hydrocarbon- containing system using a biocide
09/13/2012WO2012119283A1 Crown-shaped separation device for separating oil and water in well
09/13/2012WO2012119183A1 Method and apparatus for treating a raw ucg product stream
09/13/2012WO2012099344A3 Apparatus for separating and storing subsea well fluid
09/13/2012WO2012082468A3 Well screens having enhanced well treatment capabilities
09/13/2012WO2012058574A3 Method and apparatus for evacuating hydrocarbons from a distressed well
09/13/2012US20120231978 Permeability-Modifying Drilling Fluids and Methods of Use
09/13/2012US20120227984 Expandable liner tieback connection
09/13/2012US20120227979 Flow restrictor device
09/13/2012US20120227975 Water injection systems and methods
09/13/2012US20120227971 Sulfates and Phosphates as Allosteric Effectors in Mannanohydrolase Enzyme Breakers
09/13/2012US20120227968 Proppant Particles Formed From Slurry Droplets and Method of Use
09/13/2012US20120227967 Coated proppants
09/13/2012US20120227966 In situ catalytic upgrading
09/13/2012US20120227965 Method for accelerating start-up for steam-assisted gravity drainage (sagd) operations
09/13/2012US20120227964 Carbon dioxide gas mixture processing with steam assisted oil recovery
09/13/2012US20120227962 Non-intrusive flow indicator
09/13/2012CA2829802A1 Systems and methods for monitoring operations data for multiple wells in real-time
09/13/2012CA2829378A1 Method for charcterizing subsurface formations using fluid pressure response during drilling operations
09/13/2012CA2829066A1 In situ catalytic upgrading
09/13/2012CA2828993A1 A downhole crown-shaped separating device for separating oil and water
09/13/2012CA2828827A1 Treatment method for a hydrocarbon- containing system using a biocide
09/13/2012CA2828808A1 Screen panel with improved screening area
09/13/2012CA2828250A1 Method and apparatus for treating a raw ucg product stream
09/13/2012CA2827888A1 Check valve assembly for well stimulation operations
09/13/2012CA2827878A1 Expansion cone assembly for setting a liner hanger in a wellbore casing
09/13/2012CA2827656A1 Heat recovery method for wellpad sagd steam generation
09/13/2012CA2819707A1 A method for accelerating start-up for steam-assisted gravity drainage (sagd) operations
09/12/2012EP2497900A2 Modeling hydraulic fractures
09/12/2012EP2497556A1 Water removing device for extremly high water content three-phase flow, and measurement device and method for exrtremly hign water content three-phase flow
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