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)
03/2008
03/26/2008CN201041148Y Oil pump coupling-uncoupling device
03/26/2008CN201041146Y Oil-well pump synergy device
03/26/2008CN201041145Y Sliding pumping unit moving device
03/26/2008CN201041144Y Cylindrical pumping unit
03/26/2008CN201041143Y Different diameter double cylinder soft plunger fluid-discharging pump
03/26/2008CN201041141Y Electric submersible bi-directional oil-pumping anti-sand pump
03/26/2008CN201041026Y Movable steam injection boiler high pressure discharge system safety reclamation device
03/26/2008CN201041025Y Hydraulic drive heated oil extraction system
03/26/2008CN201041024Y Tube type filtering net and filtering pipe matching with the tube type filtering net
03/26/2008CN201041023Y Gas and liquid mixed injection method for liquid level-reducing jet-inducing construction device
03/26/2008CN201041022Y Perforating gun for oil and gas well fracturing
03/26/2008CN201041021Y Double passage oil-doped type pumping mechanical water-plugging and oil extraction integral pipe column
03/26/2008CN201041020Y Metering station casing gas automatic recovery system
03/26/2008CN201041019Y Oil field casing gas automatic recovery system
03/26/2008CN201041018Y Pumping unit box type matching block
03/26/2008CN201041017Y Balancing device of pumping unit
03/26/2008CN201041016Y Balance wheel type large travel high yield energy-saving pumping unit
03/26/2008CN201041005Y Anti-grinding pair of hollow pumping rod
03/26/2008CN101148986A Method for forecasting strong base ternary composite driving machine well extraction deposition tendency
03/26/2008CN101148985A Adjusting method for oil field injection and extraction system in ultra-high water-containing period
03/26/2008CN101148984A Method for using sea water or salt water to oil field water injection and collecting process
03/26/2008CN101148983A Non frangible perforating gun system
03/26/2008CN101148982A Side direction detonation symmetrical bidirectional perforator
03/26/2008CN101148981A Pumping unit hair plait twisting resisting equipment
03/26/2008CN101148980A Perforation and acidification pressing crack combined device for oil well
03/26/2008CN101148979A Novel method for preparing resin coating sand
03/26/2008CN101148978A Curved-pulling type pumping unit
03/26/2008CN101148976A Non-well killing change christmas tree device and using method thereof
03/26/2008CN100376794C Strong anti-thickening anti-sand hydraulic feedback oil pump with long plug ring seal and oil inlet sand deposition path
03/25/2008US7347279 Charge holder apparatus
03/25/2008US7347278 Secure activation of a downhole device
03/25/2008US7347275 Apparatus and method to detect actuation of a flow control device
03/25/2008US7347272 Formation isolation valve
03/25/2008US7347269 Flow tube exercising tool
03/25/2008US7347268 One trip flow tube exercising tool
03/25/2008US7347266 Use of mineral oils, hydrogenated polyalphaolefin oils and saturated fatty acids for breaking ves-gelled fluids
03/25/2008US7347264 Methods and compositions for well completion in steam breakthrough wells
03/25/2008US7347263 surprising stability in waters having high salt content/salinity makes them useful for injection into subterranean formations to alter the permeability; hydrophilic polymer containing at least two groups which are independently a primary amine group or a secondary amine group and saccharide
03/25/2008US7347262 Downhole sampling tool and method for using same
03/25/2008US7347256 Portable well fluid extraction apparatus
03/25/2008US7347255 Device for detecting water in product-only pump flow stream
03/25/2008CA2560501C Procedures and equipment for profiling and jointing of pipes
03/25/2008CA2537930C Production of natural gas from hydrates
03/25/2008CA2504300C Isolation assembly for coiled tubing
03/25/2008CA2492402C Indexing apparatus
03/25/2008CA2446675C Downhole filter
03/25/2008CA2390647C Method and composition for the triggered release of polymer-degrading agents for oil field use
03/25/2008CA2318897C Shaped-charge liner
03/25/2008CA2240058C Coupling device for a drive assembly
03/22/2008CA2567171A1 Treatment of brines for deep well injection
03/20/2008WO2008033536A2 Method of forming subterranean barriers with molten wax
03/20/2008WO2008033268A1 Production of hydrogen from underground coal gasification
03/20/2008WO2008032126A1 Positive displacement oil well pump
03/20/2008WO2008032112A1 Well construction and completion
03/20/2008WO2008032009A1 Methods of well stimulation and completion
03/20/2008WO2008031832A1 Method of expanding a tubular element
03/20/2008WO2008031223A1 Subterranean system and method for treating and producing oil
03/20/2008WO2008004911A3 Proppant and method of production
03/20/2008US20080070813 Oxidative Internal Breaker for Viscoelastic Surfactant Fluids
03/20/2008US20080070808 Aqueous base fluid, viscosifier, permeability modifier, fluid loss control additive, and degradable bridging agent capable of undergoing irreversible degradation downhole; filter cakes
03/20/2008US20080070807 Drill-in fluids and associated methods
03/20/2008US20080070774 Lightweight; high mechanical strength
03/20/2008US20080069702 Purge gas unit and purge gas supply integrated unit
03/20/2008US20080066930 Protective Sleeve For Expandable Tubulars
03/20/2008US20080066929 Protective Sleeve For Expandable Tubulars
03/20/2008US20080066927 Protective sleeve for threaded connections for expandable tubulars
03/20/2008US20080066926 Protective sleeve for threaded connections for expandable liner hanger
03/20/2008US20080066919 Apparatus and method for increasing well production using surfactant injection
03/20/2008US20080066918 Method and apparatus to enhance hydrocarbon production from wells
03/20/2008US20080066917 Annular fracturing combo service tool
03/20/2008US20080066916 Acidic Internal Breaker for Viscoelastic Surfactant Fluids in Brine
03/20/2008US20080066915 Integrated well access assembly
03/20/2008US20080066913 Radially expandable downhole fluid jet cutting tool
03/20/2008US20080066912 Method and Apparatus for Perforating and Isolating Perforations in a Wellbore
03/20/2008US20080066910 Rod-shaped proppant and anti-flowback additive, method of manufacture, and method of use
03/20/2008US20080066909 Methods of Limiting Leak Off and Damage in Hydraulic Fractures
03/20/2008US20080066907 Oilfield Enhanced in Situ Combustion Process
03/20/2008US20080066903 Method and system for accessing subterranean deposits from the surface and tools therefor
03/20/2008US20080066901 Box end sucker rod shear coupling
03/20/2008US20080066900 Gravel pack apparatus that includes a swellable element
03/20/2008CA2664220A1 Positive displacement oil well pump
03/20/2008CA2662615A1 Method of forming subterranean barriers with molten wax
03/20/2008CA2662100A1 Method of expanding a tubular element
03/19/2008EP1900973A1 Transmission system for pump drive
03/19/2008EP1899685A1 Method and apparatus for measuring the density of one component in a multi-component flow
03/19/2008EP1899575A2 Invert emulsion carrier fluid and oil-wetting agent and method of using same
03/19/2008EP1825101A4 Electroacoustic method and device for stimulation of mass transfer processes for enhanced well recovery
03/19/2008EP1781899A4 Alkylxylene sulfonates for enhanced oil recovery processes
03/19/2008EP1702136B1 Controlling a fluid well
03/19/2008EP1525371B1 Telescopic guide line for offshore drilling
03/19/2008CN201037477Y Filter at bottom of oil-well pump
03/19/2008CN201037457Y Highly effective linear motor oil extraction pump
03/19/2008CN201037414Y Thick oil thermal production well dynamic liquid level measuring switch device
03/19/2008CN201037408Y Shearing filter
03/19/2008CN201037407Y Dynamic negative pressure device for oil gas well
03/19/2008CN201037406Y Balance beam mobile pumping unit
03/19/2008CN201037405Y Straight line pumping unit transition bottom bracket
03/19/2008CN201037404Y Straight line pumping unit tower support with mine mouth dodging mechanism
03/19/2008CN201037403Y Pumping unit fall-proof buffering body
03/19/2008CN201037402Y Goaf decompression coal bed gas extracting simulation experiment device
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