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)
10/2013
10/09/2013CN103347976A Method and composition for enhanced hydrocarbons recovery from a formation containing a crude oil
10/09/2013CN103343680A Brine-mud backfilling method
10/09/2013CN103343679A Electro-hydraulic combination drive sand mixing truck
10/09/2013CN103343678A System and method for exploiting water-soluble gas by injecting carbon dioxide
10/09/2013CN103343677A Isolation-type non-water-passing electrically-controlled continuous adjustable injection allocation device of polymer injection well
10/09/2013CN103343676A Self-cleaning sand prevention pipe
10/09/2013CN103342879A Degradable temporary plugging ball
10/09/2013CN102384463B High-pressure and high-temperature resistant sealing device of after-burning super-critical pressure steam-injecting generator combustion chamber
10/09/2013CN102322247B Device and method for evaluating displacement capability of wetting phase of rock at high temperature under high pressure
10/09/2013CN101842601B Bore-hole jet device for formation hydraulic fracturing and horizontal well examination and a method for the operation thereof
10/09/2013CN101476457B Automatic ball projection apparatus for oil well
10/09/2013CN101126309B Horizontal fissure fluctuation leaching mining method
10/08/2013US8551926 Stabilizing emulsified acids for carbonate acidizing
10/08/2013US8551925 Imidazoline-based heterocyclic foamers for downhole injection
10/08/2013US8551345 Production fluid solid trap
10/08/2013US8550175 Well completion with hydraulic and electrical wet connect system
10/08/2013US8550166 Self-adjusting in-flow control device
10/08/2013US8550165 Well servicing fluid
10/08/2013US8550164 Oil recovery process for carbonate reservoirs
10/08/2013US8550163 Oil recovery process for carbonate reservoirs
10/08/2013US8550161 Shear-activated viscoelastic surfactant fluid and method
10/08/2013US8550159 Down-hole liquid level control for hydrocarbon wells
10/08/2013US8550158 Unified technology of full oil well and drainage zone rehabilitation
10/08/2013US8550157 Apparatus and method for controlling flow of solids into wellbores using filter media containing an array of three dimensional elements
10/08/2013US8549906 Tubing expansion
10/08/2013CA2723451C Microemulsion composition and method for treatment of a subterranean formation
10/08/2013CA2707021C Oilfield area network communication system and method
10/08/2013CA2610758C Surfactant mixtures for tertiary oil recovery
10/08/2013CA2563592C Temperature limited heaters with thermally conductive fluid used to heat subsurface formations
10/08/2013CA2491807C Sealed branch wellbore transition joint
10/05/2013CA2811638A1 Methods and apparatus for cementing wells
10/03/2013WO2013149122A1 Additive for subterranean treatment
10/03/2013WO2013148760A1 Microemulsion flowback aid composition and method of using same
10/03/2013WO2013148741A1 Electrofracturing formations
10/03/2013WO2013148712A1 Novel use of a mild alkaline agent in chemical eor
10/03/2013WO2013148623A1 Dynamic to static elastic property transforms for tiv rock material
10/03/2013WO2013148342A1 Hydraulic fracturing system and method
10/03/2013WO2013148115A2 Expansion tool for non-cemented casing-casing annulus (cca) wellbores
10/03/2013WO2013148026A1 Igniter and method of making
10/03/2013WO2013148007A2 Activation-indicating wellbore stimulation assemblies and methods of using the same
10/03/2013WO2013147796A1 Proppant pillar placement in a fracture with high solid content fluid
10/03/2013WO2013146610A1 Power generation system
10/03/2013WO2013105881A3 Method for developing the non-water-saturated part of an ore body
10/03/2013WO2013043217A4 Apparatus and method of concentric cement bonding operations before and after cementation
10/03/2013WO2013028755A3 Method of hydrocarbon resource recovery including actuator operated positioning of an rf sensor and related apparatus
10/03/2013US20130256216 Choke Assembly
10/03/2013US20130255963 Self-locating downhole devices
10/03/2013US20130255959 Plunger for performing artificial lift of well fluids
10/03/2013US20130255957 Methods and devices for restoring control and resuming production at an offshore oil well following an uncontrolled fluid release after an explosion
10/03/2013US20130255955 Water processing systems and methods
10/03/2013US20130255954 Novel aqueous fracturing fluid composition and fracturing process using the composition
10/03/2013US20130255953 Method and apparatus for preparing fracturing fluids
10/03/2013US20130255952 Controlled Production and Injection
10/03/2013US20130255951 Compositions, Systems and Methods for Releasing Additive Components
10/03/2013US20130255950 Perforating Gun and Method of Perforating a Well
10/03/2013US20130255945 Ceramic proppants
10/03/2013US20130255944 Hydrated sheet silicate minerals for reducing permeability in a well
10/03/2013US20130255943 Crossover Joint For Connecting Eccentric Flow Paths to Concentric Flow Paths
10/03/2013US20130255942 Accelerated Coalbed Methane Dewatering Using CO2 Injection
10/03/2013US20130255941 Mobile water treatment and method
10/03/2013US20130255938 Activation-Indicating Wellbore Stimulation Assemblies and Methods of Using the Same
10/03/2013US20130255936 Electrofracturing formations
10/03/2013US20130255933 Oil pumping system using a switched reluctance motor to drive a screw pump
10/03/2013US20130255486 Carbon Dioxide Separation System and Method
10/02/2013EP2644822A2 Method for electromagnetic stimulation of downhole area during hydrocarbon production
10/02/2013EP2643547A1 Method and apparatus for setting a wellbore packer
10/02/2013EP2643544A1 Downhole punch component
10/02/2013EP2643543A2 Entry guide formation on a well liner hanger
10/02/2013CN203223411U Automatic sand washing machine of electric submersible pump
10/02/2013CN203223214U Coiled tubing cable electric heating device for thick oil horizontal well
10/02/2013CN203223213U Oil well multifunctional wellhead production process
10/02/2013CN203223212U Fluid-driven oil pumping unit
10/02/2013CN203223211U Multifunctional automatic speed-changing oil pumping machine with single driving wheel and double arms interaction
10/02/2013CN203223210U Beam-pumping unit capable of adjusting jig frequency thereof through double-stage speed reducer
10/02/2013CN203223189U Repairing tool of lifting rope of pumping unit
10/02/2013CN103339346A Method and apparatus for completing a multi-stage well
10/02/2013CN103339345A Well screens having enhanced well treatment capabilities
10/02/2013CN103338827A Separation of two fluid immiscible phases for downhole applications
10/02/2013CN103335750A Method for monitoring pumping unit dynamic load based on vibrating wire sensor
10/02/2013CN103334735A Ultrasound and float combined three-phase flow split-phase flow measuring method
10/02/2013CN103334734A Transformation method of interlayer in SAGD (Steam Assisted Gravity Drainage) well
10/02/2013CN103334733A Sliding sleeve for fast fracturing
10/02/2013CN103334732A Double-discharging high pressure pipe manifold for fracturing
10/02/2013CN103334731A Multi-stage fracturing sliding sleeve preventing halfway unlocking
10/02/2013CN103334730A Combined oil nozzle device used for accurately controlling daily output of open flow of heavy oil well
10/02/2013CN103334729A Exploitation method and system of seabed methane hydrate
10/02/2013CN103334728A Exploitation method and system of land methane hydrate
10/02/2013CN103334727A Plug with adjustable two-stage lower layer
10/02/2013CN103334726A Variable high-temperature high-pressure visual rock core model holding device
10/02/2013CN103334725A Method and device for evaluating low permeability reservoir displacement effectiveness
10/02/2013CN103334724A Method and well pattern structure for mining oil deposit with nano magnetofluid displacement
10/02/2013CN103334723A Device and method for underground coal mine hydraulic slit cutting self-suction type material abrading jet flow generation
10/02/2013CN103334722A Method of radially expanding a tubular element
10/02/2013CN103334721A Pumping unit
10/02/2013CN103334720A Oscillating bar type rack pumping unit
10/02/2013CN103334719A Solar magnetic-levitation pumping unit
10/02/2013CN103334718A Device for recovering dirty oil leaked due to mechanical seal of thick oil transportation centrifugal pump
10/02/2013CN103334717A Oil pumping device for oil field rod pumped well
10/02/2013CN102226466B Reciprocating screw transmission mechanism
10/02/2013CN101871337B Method for controlling tower-type pumping unit
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