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)
11/2012
11/28/2012CN202560190U A petroleum oil separated-zone water injection system
11/28/2012CN202560189U High strength water distributor
11/28/2012CN202560188U High-inclination well layered water injection technical tubular column
11/28/2012CN202560187U Rolling type power supply rod
11/28/2012CN202560186U Finite jet flow punching bomb
11/28/2012CN202560185U Self-cleaning screen pipe for oil field work
11/28/2012CN202560184U Streamlined slit sand control sieve tube
11/28/2012CN202560183U Gravel filling tool for horizontal wells
11/28/2012CN202560182U Gas and sand anchor for oilfield well
11/28/2012CN202560181U Pipe-column sand setting device
11/28/2012CN202560180U A buried type gas-lift working barrel
11/28/2012CN202560179U Shifting device of belt pumping unit
11/28/2012CN202560178U Pumping unit device of driving movement of chains and well rod along fan-shaped edge
11/28/2012CN202560177U Tower-type double-chain belt pumping unit
11/28/2012CN202560176U Screw pump direct driving device with leaking liquid overflow system
11/28/2012CN202560175U High-transmission-ratio beam-pumping unit with hardened faces
11/28/2012CN202560174U Pumping unit operation maintenance device
11/28/2012CN202560173U Walking beam walkways of pumping unit
11/28/2012CN202560172U Novel screw pump oil production string apparatus
11/28/2012CN202560171U Linear-transmission pumping unit
11/28/2012CN202560170U Fast balance-adjusting device for beam pumping unit
11/28/2012CN202560169U Dual traction pumping unit
11/28/2012CN202560153U Bullet-shaped explosion device for solving brine seepage for salt well
11/28/2012CN202560115U Selective injection and water plugging integrated pipe column for thickened oil well
11/28/2012CN102803807A Expansible threaded joint and method for making same
11/28/2012CN102803651A Method of producing a combined gaseous hydrocarbon component stream and liquid hydrocarbon component streams, and an apparatus therefor
11/28/2012CN102803650A System and method for fracturing rock in tight reservoirs
11/28/2012CN102803649A Water Injection Systems And Methods
11/28/2012CN102803648A Systems and methods for producing oil and/or gas
11/28/2012CN102803647A Stimulation technique for open hole well
11/28/2012CN102803646A System and methods for removing fluids from a subterranean well
11/28/2012CN102803432A Metal-mediated viscosity reduction of fluids gelled with viscoelastic surfactants
11/28/2012CN102803430A Viscoelastic surfactants and methods of making and using same
11/28/2012CN102797454A Tester for oilfield eccentric separate injection well and long-time real-time working condition monitoring method
11/28/2012CN102797449A Method for reducing hydraulic jet fracturing and bursting pressures of compact reservoir
11/28/2012CN102797448A Retreating sectional type hydraulic cracking method
11/28/2012CN102797447A Extracting method of land combustible ice and extracting device adopted for same
11/28/2012CN102797446A Method and equipment for suppressing generation of hydrogen sulfide in oil layer of steam-driven injection well
11/28/2012CN102797445A Automatic charging device of foam discharging ball
11/28/2012CN102797444A Automatic charging device of foam discharging rod on wellhead
11/28/2012CN102797443A Method for exploiting residual crude oil in low-permeability oilfield by using polymer micro/nanoparticle
11/28/2012CN102797442A Deep fluid diversion method
11/28/2012CN102797441A Method and device for exploiting seabed combustible ice
11/28/2012CN102797440A Self-dropping-fishing rapid liquid drainage pump for oil-water well
11/28/2012CN102797439A Elastic contactor for oil casing pipe
11/28/2012CN102797438A Mechanical energy storage type oil pumping unit
11/28/2012CN102797437A Underground atomizer for liquid discharging in gas well
11/28/2012CN102797435A Safety valve of ground hydraulic control water injection well
11/28/2012CN102797434A Safety valve of pneumatic control water injection well
11/28/2012CN102796505A Double effects treatment agent of hydrogen sulfide reduction, catalysis and viscosity reduction in steam flooding injection well and application
11/28/2012CN102796504A Treatment agent of hydrogen sulfide oil displacement, catalysis, viscosity reduction and reduction of steam flooding injection well and application
11/28/2012CN102796503A Intercalation polymer gel diversion agent
11/28/2012CN101936142B Aerated underbalanced drilling method for coal-bed gas
11/28/2012CN101886535B Mule-head manual displacement device of pumping unit
11/28/2012CN101775969B Tower type combined drive pumping unit without guide wheel
11/28/2012CN101769149B CO2 injection profile well logging method
11/28/2012CN101749002B CO2 flooding anticorrosion and gas control lifting technology
11/28/2012CN101748995B Double-well swing arm pumping unit
11/28/2012CN101696629B Physical model test device for evaluating sand preventing process of vertical well
11/28/2012CN101688443B Method for filling nonuniform proppant in a fissure of fractured interval passed through by well
11/28/2012CN101660401B Real-time alarming method by monitoring shutdown of pumping machine based on acceleration sensor
11/28/2012CN101660400B Alarming method by monitoring shutdown of pumping machine based on acceleration sensor
11/28/2012CN101600549B Polyamide beads and method for producing such beads
11/28/2012CN101550817B Hoisting system of stripper well in oil field
11/28/2012CN101506465B Controlling the pressure within an annular volume of a wellbore
11/28/2012CN101498210B Coal bed gas slim-hole hydraulic jet orienting fracturing yield increasing method
11/28/2012CN101316983B Methods of filtering a liquid stream produced from an in situ heat treatment process
11/28/2012CN101273184B Apparatus and method of fragmenting hard particles
11/28/2012CN101166889B Systems and methods for producing oil and/or gas
11/28/2012CN101163857B Varying properties along lengths of temperature limited heaters
11/28/2012CN101160448B Pipe separator inlet
11/27/2012US8317012 Drive head assembly for a fluid conveyor system
11/27/2012US8316966 Method and system for accessing subterranean deposits from the surface and tools therefor
11/27/2012US8316955 Carbon dioxide-based geothermal energy generation systems and methods related thereto
11/27/2012US8316953 Valve
11/27/2012US8316952 System and method for controlling flow through a sand screen
11/27/2012US8316950 Systems and methods for deliquifying a commingled well using natural well pressure
11/27/2012US8316949 Intake for shrouded electric submersible pump assembly
11/27/2012US8316942 ESP for perforated sumps in horizontal well applications
11/27/2012US8316941 Method for single-stage treatment of siliceous subterranean formations
11/27/2012US8316939 Method of installing sand control screens in wellbores containing synthetic or oil-based drilling fluids
11/27/2012US8316938 Subterranean water production, transfer and injection method and apparatus
11/27/2012US8316935 Method of delivering frac fluid and addivities
11/27/2012US8316933 Microbial enhanced oil recovery methods
11/27/2012US8316928 Drive means
11/27/2012US8316872 Blowout preventer using a plate propelled by an explosive charge
11/27/2012CA2705680C Creation of hydrate barrier during in situ hydrocarbon recovery
11/27/2012CA2684222C Monitoring, controlling and enhancing processes while stimulating a fluid-filled borehole
11/27/2012CA2683272C Squeeze process for reactivation of well treatment fluids containing diatomaceous earth
11/27/2012CA2634581C Formation treatment method using deformable particles
11/27/2012CA2591309C Controlling the flow of a multiphase fluid from a well
11/27/2012CA2565937C Continuous positive flow backflash prevention system
11/27/2012CA2563736C Method and apparatus for sealing radially expanded joints
11/27/2012CA2560851C Method for increasing the production of hydrocarbon liquids and gases
11/27/2012CA2515901C Liquid carbon dioxide cleaning of wellbores and near-wellbore areas
11/25/2012CA2776072A1 Dual-purpose steam injection and production tool
11/24/2012CA2777334A1 Velocity strings
11/22/2012WO2012159062A2 Seal around braided cable
11/22/2012WO2012158645A1 Surfactants for enhanced oil recovery
11/22/2012WO2012158281A1 Diffuser bump vane profile
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