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
11/14/2012CN102777157A CO2 drive oil-gas-water separate well injecting oil reservoir mixing drive development method
11/14/2012CN102777156A Fracturing method for multi-interval oil and gas wells
11/14/2012CN102777155A Shale gas bridge plug subsection completion method
11/14/2012CN102777154A Mechanical energy storage oil pumping unit without headframe
11/14/2012CN102777153A Pumping unit with wide swing angle
11/14/2012CN102777152A Gear rack travelling oil extraction machine
11/14/2012CN102777151A Novel process for hydraulic mining and fluid carrying of deep coal
11/14/2012CN102775978A Treating agent for inhibiting generation of hydrothion in oil reservoir in steam flooding injection well and application thereof
11/14/2012CN102775977A Treating agent for inhibiting generation of hydrothion in steam flooding injection well, displacing oil and reducing viscosity and application thereof
11/14/2012CN102775503A Preparation method of high-salt resistance high-viscosity sodium carboxymethylcellulose
11/14/2012CN102182499B Hydrofracturing-based method and equipment for diminishing dust and eliminating outburst of coal bed
11/14/2012CN101979816B Coal bed gas horizontal well and drainage-mining straight well combined well drilling construction method
11/14/2012CN101942995B Method for evaluating watered-out degree of ultralow-permeability water-drive reservoir sandstone oil layer
11/14/2012CN101864939B Acid-fracturing method for leading crack to extend downward
11/14/2012CN101818633B Downhole closing well technology of replacing tubing after deep horizontal gas well open hole staged fracturing
11/14/2012CN101798913B Differential pressure underground throttle device
11/14/2012CN101699025B Method for regulating and controlling microbial enhanced oil recovery
11/14/2012CN101555786B Improved natural gas drive oil production method
11/14/2012CN101525991B Hydraulic-driven mixer for injection
11/13/2012US8307915 System and method for drilling multilateral wells using magnetic ranging while drilling
11/13/2012US8307901 Methods of fracturing subterranean formations using sulfonated synthetic gelling agent polymers
11/13/2012US8307900 Method and apparatus for performing laser operations downhole
11/13/2012US8307897 Geochemical control of fracturing fluids
11/13/2012US8307896 Two-concentric pipe system to heat fluids using the earth's interior thermal energy (deep)
11/13/2012US8307894 Composition and method for inhibiting the deleterious effects of sulfate reducing bacteria
11/13/2012US8307893 Method of improving waterflood performance using barrier fractures and inflow control devices
11/13/2012CA2740457A1 Hydraulic set packer system and fracturing methods
11/13/2012CA2688202C Viscoelastic fluids containing hydroxyethyl cellulose
11/13/2012CA2648024C Wellbore method and apparatus for sand and inflow control during well operations
11/13/2012CA2559006C Expander for expanding a tubular element
11/12/2012CA2740158A1 Harvesting by-passed resource
11/11/2012CA2776601A1 Methods of zonal isolation and treatment diversion
11/11/2012CA2762498A1 Integrated in situ retorting and refining of hydrocarbons from oil shale, tar sands and depleted formations
11/08/2012WO2012151533A1 Methods and compositions using hydrocarbon- based crosslinking fluids with non- detectable btex levels
11/08/2012WO2012151303A2 Liner cementation process and system
11/08/2012WO2012151113A1 Subsea pressure control system
11/08/2012WO2012151060A2 Adjustment and restraint system for a subsea flex joint
11/08/2012WO2012151036A2 A device for directing the flow of a fluid using a centrifugal switch
11/08/2012WO2012150906A1 Thermo-pulse generator
11/08/2012WO2012149638A1 Sliding sleeve valve and method for fluid treating a subterranean formation
11/08/2012WO2012149620A1 Connected, integrated underwater equipment with depressurisation systems
11/08/2012WO2012122667A8 Betaine surfactants and preparation methods and uses thereof
11/08/2012WO2012122636A4 Method and apparatus of hydraulic fracturing
11/08/2012WO2012109397A3 Completion assembly
11/08/2012WO2012109352A3 Three-dimensional modeling of parameters for oilfield drilling
11/08/2012WO2012106623A3 Method of corrosion mitigation using nanoparticle additives
11/08/2012WO2012091981A3 Boron shaped charge
11/08/2012WO2012045771A3 Well pump installation
11/08/2012US20120282384 Fine bubble generating apparatus
11/08/2012US20120282117 Air blowing fan, circulator, micro-particle diffusion device, and air circulation method
11/08/2012US20120279728 Removal of acid gases from a gas stream, with co2 capture and sequestration
11/08/2012US20120279721 High pressure stimulation pump
11/08/2012US20120279715 Novel quaternary foamers for downhole injection
11/08/2012US20120279714 Chemical line flush systems
11/08/2012US20120279713 Pulse fracturing device and method
11/08/2012US20120279712 Magnetic Composite Particles
11/08/2012US20120279711 Environmentally Friendly Low Temperature Breaker Systems and Related Methods
11/08/2012US20120279710 Injection drill bit
11/08/2012US20120279709 Expandable downhole casing coupling locator tool
11/08/2012US20120279708 Salt of weak bronsted base and bronsted acid as gelation retarder fr crosslinkable polymer compositions
11/08/2012US20120279705 Liner cementation process and system
11/08/2012US20120279704 Particulate Materials Coated With a Relative Permeability Modifier and Methods for Treating Subterranean Formations Using Treatment Fluids Containing the Same
11/08/2012US20120279703 Coated and cured proppants
11/08/2012US20120279702 Formation Testing
11/08/2012CA2842831A1 Methods and compositions for hydrocarbon-based crosslinking additives with non-detectable btex levels
11/08/2012CA2834915A1 Liner cementation process and system
11/08/2012CA2834210A1 Sliding sleeve valve and method for fluid treating a subterranean formation
11/08/2012CA2831601A1 A device for directing the flow of a fluid using a centrifugal switch
11/07/2012EP2520761A2 Wellbore apparatus and method for completion, production and injection
11/07/2012EP2519708A1 Hydraulic fracturing system
11/07/2012EP2519608A1 Additive and method for removal of impurities formed due to sulfur compounds in crude oils containing calcium naphthenate
11/07/2012CN202522609U Automatic monitoring system for work condition information of petroleum pumping unit
11/07/2012CN202521168U Intelligent intermittent bailing type pumping unit housing hoisting hole and rain-proof device
11/07/2012CN202520300U Device for measuring water in oil and water separation
11/07/2012CN202520299U Oil metering device in oil-water separation
11/07/2012CN202520297U Gas and sand anchor for underground oil production
11/07/2012CN202520296U Herringbone corrugated plate
11/07/2012CN202520295U Intelligent steam distribution process tubular column for horizontal steam injection well
11/07/2012CN202520294U High-temperature and high-pressure thermal recovery steam injection pipeline decompression device for oil field
11/07/2012CN202520293U Efficient electric water nozzle capable of adjusting flow inside
11/07/2012CN202520292U Injection allocation device of proportional control pump
11/07/2012CN202520291U High-precision electric adjustable water nozzle
11/07/2012CN202520290U Water injection regulation and optimization control system
11/07/2012CN202520289U Anti-blocking bailing swab for oil field
11/07/2012CN202520288U Working condition parameter remote monitoring pre-diagnosing device for oil pumping unit
11/07/2012CN202520287U Balance block of walking-beam type pumping unit
11/07/2012CN202520286U Twin-well oil production device
11/07/2012CN102770620A Apparatuses and methods of manufacturing oilfield machines
11/07/2012CN102770619A Tubular assembly
11/07/2012CN102767357A V-shaped well for gas-cap reservoir
11/07/2012CN102767356A Method for using combustion and vapor combination flooding to exploit thick oil
11/07/2012CN102767355A Thick oil steam-huff-and-puff injection-production integrated oil production device
11/07/2012CN102767354A Method for producing viscous hydrocarbon using steam and carbon dioxide
11/07/2012CN102767353A Comprehensive mining technology of drowned well
11/07/2012CN102767352A Ball and dart launcher with parallel axis release
11/07/2012CN102767351A Shift idler wheel and auxiliary rolling barrel for belt type pumping unit
11/07/2012CN102767350A Slippage preventing lock for brake of pumping unit
11/07/2012CN102767349A Coalbed methane horizontal well screen pipe suspension well completion method
11/07/2012CN102767340A Multiphase flow regulation device and method for restraining slug flow by utilizing same
11/07/2012CN102155190B Pulley stroke beam type pumping unit
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