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)
06/2010
06/03/2010US20100132942 Hydrocarbon reservoir treatment method with hydrocarbons
06/03/2010US20100132941 Apparatus and method for manipulating fluid during drilling or pumping operations
06/03/2010US20100132933 Methane hydrate dissociation accelerating and methane gas deriving system
06/03/2010CA2745066A1 Continuous mining
06/03/2010CA2744745A1 Artificial oil lifting unit using absorbent belts
06/03/2010CA2744193A1 Method for estimation of sagd process characteristics
06/03/2010CA2742884A1 Bellows valve
06/03/2010CA2742577A1 Method for modifying an existing subsea arranged oil production well, and a thus modified oil production well
06/03/2010CA2741824A1 Cement compositions and methods utilizing nano-hydraulic cement
06/03/2010CA2686290A1 System and method for verifying perforating gun status prior to perforating a wellbore
06/03/2010CA2686104A1 Delayed breaking of well treatment fluids
06/02/2010EP2192507A1 Flow simulation in a well or pipe
06/02/2010EP2191101A1 Drill in sand control liner
06/02/2010EP2191100A1 Annular pressure monitoring during hydraulic fracturing
06/02/2010EP2191099A1 Downhole valve for preventing zonal cross-flow
06/02/2010EP2190943A2 Improved process for enhanced oil recovery
06/02/2010DE102008057894A1 Trennvorrichtung zur Abtrennung von Sand- und Gesteinspartikeln Separator for removing sand and rock particles
06/02/2010CN201499046U Adjustment device for motor of oil pumping machine
06/02/2010CN201496746U Random rotating butter feeder
06/02/2010CN201496513U Skip small pulley for oil pumping unit
06/02/2010CN201496506U Power unit of hydraulic coupling transmission box used for pumping unit
06/02/2010CN201496496U Press roller type belt tension regulator
06/02/2010CN201496474U V-belt with continuous circular arc teeth for oil pumping unit
06/02/2010CN201496473U Belt with continuous circular arc teeth for oil pumping unit
06/02/2010CN201496389U Device for externally-expanded and internally-clamped gapless connecting rod upper connector of oil pumping machine
06/02/2010CN201496059U Gas-liquid separation type well surveying device
06/02/2010CN201496055U Novel backflow type high-efficient gas anchor
06/02/2010CN201496054U Spiral-flow type oil-water separator for oil-well pump with rod
06/02/2010CN201496053U Acid Fracturing pipe string for setting, construction and acidification layer by layer
06/02/2010CN201496052U Concentric adjustable water distributor
06/02/2010CN201496051U Relay lifting device for viscous oil dilution well
06/02/2010CN201496050U First-overturning later-filling type sand control tool
06/02/2010CN201496049U Oil well anti-plugging oil pump
06/02/2010CN201496048U Monitoring and alarm device for running accident of oil pumping machine
06/02/2010CN201496047U Anti-slip and anti-lock braking device for a walking-beam oil pumping machine
06/02/2010CN201496046U Chain-drive pumping unit
06/02/2010CN201496045U Monitor for monitoring belt slipping of pumping unit
06/02/2010CN201496044U Walking beam of lower partial barbell pumping unit
06/02/2010CN201496043U Self-locking releasable brake safety device capable for oil pumping machine
06/02/2010CN201496008U Anti-releasing polish rod clamp
06/02/2010CN201496007U Steel wire rope and polished rod breaking and dropout prevention mule-head hanger
06/02/2010CN201495998U N80/P110/L80 steel grade high-frequency straight welded oil string
06/02/2010CN101720378A Apparatus and method for expanding tubular elements
06/02/2010CN101719702A Motor for tower-type pumping unit and tower-type pumping unit thereof
06/02/2010CN101718193A Method for prolonging service life of screw pump by blending water into casing pipe sleeve of heavy oil well
06/02/2010CN101718192A Method for carrying out tertiary oil production on oil field
06/02/2010CN101718191A Directional cracking method for waterpower slotting
06/02/2010CN101718190A Completed well body structure with temporary plugging function screen pipe and well completion method for suspending screen pipe at tail pipe
06/02/2010CN101718189A Completed well body structure with temporary plugging function screen pipe and well completion method for injecting cement on top
06/02/2010CN101718188A Tower-type pulley block transmission oil jack
06/02/2010CN101718187A Linear oil pumping machine
06/02/2010CN101718186A Hydraulically-controlled linear oil pumping unit
06/02/2010CN101718185A Linear oil pumping machine
06/02/2010CN101717626A Application of methylnaphthalene in lowering viscosity of thickened oil
06/02/2010CN101298028B Mixed stirring device of acidizing substance
06/02/2010CN101291050B Electric cable winding/paying off device, down-hole information transmission apparatus and method
06/02/2010CN101173606B Controllable disjoint sandblaster
06/01/2010US7728044 Saponified fatty acids as breakers for viscoelastic surfactant-gelled fluids
06/01/2010US7727940 Silicone-tackifier matrixes and methods of use thereof
06/01/2010US7727939 Well bore fluid mixture of oil additive, solid colloidal particles coated with dispersant; barite coated with stearyl methacrylate, butyl acrylate; suspension stability; drilling fluids
06/01/2010US7727937 Acidic treatment fluids comprising xanthan and associated methods
06/01/2010US7727936 for industrial and/or subterranean operations; well bores; biopolymers
06/01/2010US7726405 High pressure large bore utility line connector assembly
06/01/2010US7726404 treating a shale-containing subterranean formation penetrated by a wellbore by forming a carbon dioxide treatment fluid having a viscosity of less than about 10 mPa-s at a shear rate of about 100 s-1; fluid is introduced into formation through wellbore at a pressure above fracture pressure of formation
06/01/2010US7726403 Apparatus and method for ratcheting stimulation tool
06/01/2010US7726401 Casing exit joint with easily milled, low density barrier
06/01/2010US7726399 Method of enhancing hydraulic fracturing using ultra lightweight proppants
06/01/2010US7726398 Water flooding method
06/01/2010US7726397 Methods and compositions for determination of fracture geometry in subterranean formations
06/01/2010US7726395 Expanding multiple tubular portions
06/01/2010CA2599056C A perforating gun having a plurality of charges
06/01/2010CA2592799C Proppant material and formation hydraulic fracturing method (variants)
06/01/2010CA2591859C Methods and compositions for well completion in steam breakthrough wells
06/01/2010CA2589891C Hydrocarbon sweep into horizontal transverse fractured wells
06/01/2010CA2560461C Modular design for downhole ecd-management devices and related methods
06/01/2010CA2541111C Mud flow back valve
06/01/2010CA2512485C Tool for measuring perforation tunnel depth
06/01/2010CA2414071C Well maintenance equipment and procedure
06/01/2010CA2359622C Method for measuring the flow rates of the single phases in a multiphase fluid stream and relevant apparatus
05/2010
05/27/2010WO2010059908A1 Methods for increasing oil production
05/27/2010WO2010059536A2 Modifying expansion forces by adding compression
05/27/2010WO2010059528A2 Method for downhole screen manufacturing
05/27/2010WO2010059228A1 Systems and methods for operating a plurality of wells through a single bore
05/27/2010WO2010059062A1 A method and apparatus for controlling the flow of fluid in oil and/or gas production
05/27/2010WO2010059060A1 Real time downhole intervention during wellbore stimulation operations
05/27/2010WO2010058160A1 Apparatus and method for servicing a wellbore
05/27/2010WO2010057591A1 Separator for separating sand and rock particles
05/27/2010WO2010022315A3 Using heat from produced fluids of oil and gas operations to produce energy
05/27/2010WO2009026357A3 Determination of point of sand production initiation in wellbores using residual deformation characteristics and real time monitoring of sand production
05/27/2010US20100126925 Flotation device
05/27/2010US20100126737 Methods for increasing oil production
05/27/2010US20100126729 Systems and methods for operating a plurality of wells through a single bore
05/27/2010US20100126728 hydraulic fracturing of subterranean formations with a gas and oil well proppants of alumina fines, clay and bauxite, and optionally a sintering aid; grinding
05/27/2010US20100126727 In situ recovery from a hydrocarbon containing formation
05/27/2010US20100126726 ALKALINE BETA-MANNANASE CONTAINING COMPOSITIONS USEFUL FOR THE HYDROLYSIS OF GUAR IN HIGH pH ENVIRONMENTS AND METHODS RELATED THERETO
05/27/2010US20100126725 Coiled tubing bottom hole assembly with packer and anchor assembly
05/27/2010US20100126724 Method and apparatus for isolating a jet forming aperture in a well bore servicing tool
05/27/2010US20100126723 Fluid Loss Control
05/27/2010US20100126722 Wellbore system and method of completing a wellbore
05/27/2010US20100126721 Subterranean water production, transfer and injection method and apparatus
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