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)
03/2010
03/03/2010EP2158050A1 Apparatus and methods for expanding tubular elements
03/03/2010CN201417985Y Safety mobile device of oil pumping machine motor
03/03/2010CN201416530Y Deep-well pump with piston with large flow channel and low resistance
03/03/2010CN201416445Y Polymer injection well head sampler
03/03/2010CN201416433Y Medium-frequency heating system for thickened oil recovery
03/03/2010CN201416432Y Polymer dispersing device
03/03/2010CN201416431Y Non-return seal injection integral polymer injector
03/03/2010CN201416430Y Hydraulic controlled type concentric dual-pipe separate injection pipe string
03/03/2010CN201416429Y Sand blasting choke with sliding sleeve
03/03/2010CN201416428Y Motor top thread of oil-pumping machine
03/03/2010CN201416427Y Selective production string
03/03/2010CN201416426Y Safety antitheft screw brake tubular type multipurpose slideway of motor
03/03/2010CN201416425Y Double-horsehead oil pumping unit capable of horsehead rotation and walking beam balancing
03/03/2010CN201416424Y Oil pumping unit capable of horsehead rotation, downward biased moment bending and walking beam balancing
03/03/2010CN201416423Y Motor removing seat
03/03/2010CN201416422Y Oil pumping machine weighted walking beam
03/03/2010CN201416421Y Oil pumping machine horse head manual displacing device
03/03/2010CN201416420Y Oil pumping machine safety belt hanging device
03/03/2010CN201416419Y Oil pumping machine two platform combining device
03/03/2010CN201416391Y Down-hole supercharger
03/03/2010CN101663460A Oil well completion tool having severable tubings string barrier disc
03/03/2010CN101660403A Mining method of sodium sulphate ore
03/03/2010CN101660402A Extraction method of valve opening and closing points of indicator diagram of pumping well based on physical significance
03/03/2010CN101660401A Real-time alarming method by monitoring shutdown of pumping machine based on acceleration sensor
03/03/2010CN101660400A Alarming method by monitoring shutdown of pumping machine based on acceleration sensor
03/03/2010CN101660399A Oil extractor with low cost, long stroke and low stroke frequency
03/03/2010CA2677486A1 Gas flow system
03/02/2010US7670995 Viscoelastic wellbore treatment fluid
03/02/2010US7670993 Contacting an emulsion of water, detergent, hydrocarbon solvent and acid with the interior of the oil well; one-step cleaning
03/02/2010US7669660 Riser disconnect and support mechanism
03/02/2010US7669658 High strength polycrystalline ceramic spheres
03/02/2010US7669657 Enhanced shale oil production by in situ heating using hydraulically fractured producing wells
03/02/2010US7669655 Method of fracturing a subterranean formation at optimized and pre-determined conditions
03/02/2010US7669652 Subsea pumping system
03/02/2010US7669651 Apparatus and method for maximizing production of petroleum wells
03/02/2010CA2639539A1 Liquified petroleum gas fracturing methods
03/02/2010CA2593622C Tubular expansion using a tapered collet
03/02/2010CA2356130C Method and apparatus for drilling and lining a wellbore
02/2010
02/28/2010CA2675738A1 Metal free crosslinking of galactomannan
02/27/2010CA2826695A1 Process for recovering heavy oil utilizing one or more membranes
02/27/2010CA2742867A1 Process for recovering heavy oil utilizing one or more membranes
02/25/2010WO2010022315A2 Using heat from produced fluids of oil and gas operations to produce energy
02/25/2010WO2010022295A1 Electromagnetic based system and method for enhancing subsurface recovery of fluid within a permeable formation
02/25/2010WO2010022283A1 A well diversion agent formed from in situ decomposition of carbonyls at high temperature
02/25/2010WO2010021668A1 Apparatus for treating fluid streams
02/25/2010WO2010021618A1 Closed loop energy production from geothermal reservoirs
02/25/2010WO2010021563A1 Hydraulic fracturing proppants
02/25/2010WO2010020956A2 Subsea well intervention lubricator and method for subsea pumping
02/25/2010WO2010020955A1 Method of installing sand control screens in wellbores containing synthetic or oil-based drilling fluids
02/25/2010WO2010020747A2 High rate stimulation method for deep, large bore completions
02/25/2010WO2010020698A2 Equipment for quick dispersion of polyacrylamide powder for fracturing operations
02/25/2010WO2010020350A1 Method and composition for curing lost circulation
02/25/2010WO2009154914A3 Maintaining shale stability by pore plugging
02/25/2010WO2009152130A3 Wire wrap screen manufacturing method
02/25/2010WO2009151765A3 Radially expandable downhole fluid jet cutting tool having an inflatable member
02/25/2010WO2009142847A3 Methods of underground formation consolidation
02/25/2010WO2009142803A8 Field management for substantially constant composition gas generation
02/25/2010WO2009140591A3 Continuous fibers for use in well completion, intervention, and other subterranean applications
02/25/2010WO2009085341A3 Wireless perforating gun initiation
02/25/2010US20100047793 Methods to stimulate biogenic methane production from hydrocarbon-bearing formations
02/25/2010US20100047089 High temperature monitoring system for esp
02/25/2010US20100044053 Method and an apparatus for cold start of a subsea production system
02/25/2010US20100044052 System and method for connecting and aligning a compliant guide
02/25/2010US20100044051 Zone isolation assembly array for isolating a plurality of fluid zones in a subsurface well
02/25/2010US20100044050 Fluorinated surfactants and methods of using the same
02/25/2010US20100044049 Green coal bed methane fracturing fluid compositions, methods of preparation and methods of use
02/25/2010US20100044048 Non-toxic, green fracturing fluid compositions, methods of preparation and methods of use
02/25/2010US20100044047 Method for impulse stimulation of oil and gas well production
02/25/2010US20100044044 Controlling transient underbalance in a wellbore
02/25/2010US20100044041 High rate stimulation method for deep, large bore completions
02/25/2010US20100044040 Method of installing sand control screens in wellbores containing synthetic or oil-based drilling fluids
02/25/2010US20100044039 Geothermal Well Diversion Agent Formed From In Situ Decomposition of Carbonyls at High Temperature
02/25/2010US20100044038 Apparatus and method for processing fluids from a well
02/25/2010US20100044032 Method for completion, maintenance and stimulation of oil and gas wells
02/25/2010US20100044031 Method for identification of novel anaerobic denitrifying bacteria utilizing petroleum components as sole carbon source
02/25/2010US20100044030 Geometrically Optimized Expansion Cone
02/25/2010US20100044029 Active control and/or monitoring of expandable tubular devices
02/25/2010US20100044027 Arrangement and method for sending and/or sealing cement at a liner hanger
02/25/2010US20100044026 Oil well pump
02/25/2010CA2775168A1 Equipment for quick dispersion of polyacrylamide powder for fracturing operations
02/25/2010CA2735572A1 Hydraulic fracturing proppants
02/25/2010CA2735046A1 Using heat from produced fluids of oil and gas operations to produce energy
02/25/2010CA2734351A1 High rate stimulation method for deep, large bore completions
02/24/2010EP2156365A1 Method of improved reservoir simulation of fingering systems
02/24/2010EP2156013A1 Method for completing a borehole
02/24/2010CN201412827Y Dryness controller of high-pressure steam injection boiler
02/24/2010CN201412821Y Overheat steam injection boiler with non-desalted feed water
02/24/2010CN201412487Y Oilfield special purpose gear shifting speed reducer
02/24/2010CN201412313Y Reciprocating precession type oil-submersible electric pump
02/24/2010CN201412312Y Oil pumping device of combination of a plurality of linear motor pumps
02/24/2010CN201412135Y Servo control system of pumping unit
02/24/2010CN201412134Y Small-casing pipe string for multilayer fracturing
02/24/2010CN201412133Y Pipe string for multi-stage drag fracturing of horizontal well
02/24/2010CN201412132Y Ring-shaped high-pressure manifold device
02/24/2010CN201412131Y Non-powered water-carrying constant-speed heating dosing device
02/24/2010CN201412130Y Polymer flooding injection proportion adjustment device
02/24/2010CN201412129Y Pumping and drainage gas production device of gas production well
02/24/2010CN201412128Y Multifunctional oil drain
02/24/2010CN201412127Y Filter sieve tube
02/24/2010CN201412126Y Driving device specialized for oil pumping unit of oil field
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