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)
05/2012
05/09/2012CN202215212U Watering oil-well pump
05/09/2012CN202215211U Drum tower frame type oil pumping unit
05/09/2012CN202215210U Energy-saving oil production irrigation device
05/09/2012CN202215209U Energy-saving pumping unit-free device having functions of long-distance oil collecting, well washing, water delivering and irrigating
05/09/2012CN202215208U Energy-saving, oil-extracting and dewaxing device
05/09/2012CN202215207U Quick balancing device of pumping unit
05/09/2012CN202215206U Balanced type one-driving-two oil production unit
05/09/2012CN202215205U Slant long ring-shaped rack water-pumping gas production machine or pumping unit
05/09/2012CN202215202U Opener for separate-layer acidification drain valve
05/09/2012CN202215194U Water adding packer
05/09/2012CN202215180U Concentric tube wellhead assembly for thickened oil exploitation of steam-assisted gravity drainage
05/09/2012CN202215165U Bend preventing device for polish rod of oil-pumping well
05/09/2012CN102449262A Multiple zone isolation method
05/09/2012CN102449261A Electric submersible pumping system for dewatering gas wells
05/09/2012CN102449260A Heat transport dead leg
05/09/2012CN102444397A Method of exploiting deep layer oil shale to manufacture shale oil and oil shale gas
05/09/2012CN102444396A Natural gas production method
05/09/2012CN102444395A Process for enhanced oil recovery using asp technique
05/09/2012CN102444394A Spiral oil pumping device
05/09/2012CN102444393A Intelligent winch type pulling oil production system
05/09/2012CN101525995B Gas and liquid multiphase quantitative measuring device and method thereof
05/09/2012CN101493006B Method for controlling bottom water coning by foam
05/08/2012US8173012 Marine oil leak recovery and marine petroleum mining method
05/08/2012US8172335 Electrical current flow between tunnels for use in heating subsurface hydrocarbon containing formations
05/08/2012US8171998 System for controlling hydrocarbon bearing zones using a selectively openable and closable downhole tool
05/08/2012US8171997 High velocity string for well pump and method for producing well fluid
05/08/2012US8171996 Wellhead system having a tubular hanger securable to wellhead and method of operation
05/08/2012US8171995 Pressure relieving transition joint
05/08/2012US8171994 Multi-position valve for fracturing and sand control and associated completion methods
05/08/2012US8171993 Water heating apparatus for continuous heated water flow and method for use in hydraulic fracturing
05/08/2012US8171992 Method of fracturing a subterranean formation at optimized and pre-determined conditions
05/08/2012US8171989 Well having a self-contained inter vention system
05/08/2012CA2756229A1 Methods and compositions for determination of fracture geometry in subterranean formations
05/08/2012CA2643285C Method for producing viscous hydrocarbon using steam and carbon dioxide
05/08/2012CA2610654C Viscoelastic surfactant fluid systems comprising an aromatic sulfonate and methods of using same
05/08/2012CA2597563C One trip cemented expandable monobore liner system and method
05/08/2012CA2573518C Sonar sand detection
05/04/2012CA2724499A1 T-frac zone test tool and system
05/03/2012WO2012058658A1 Method of making progressing cavity pumping systems
05/03/2012WO2012058622A2 Enhancing hydrocarbon recovery
05/03/2012WO2012058574A2 Method and apparatus for evacuating hydrocarbons from a distressed well
05/03/2012WO2012058551A2 Remote pig launcher
05/03/2012WO2012058546A2 Subsea pig handler
05/03/2012WO2012058544A1 Collapsible casing device for use in controlling flow
05/03/2012WO2012058290A2 Surface multiple well
05/03/2012WO2012058288A2 Downhole multiple well
05/03/2012WO2012058144A2 Hydrate deposit inhibition with surface-chemical combination
05/03/2012WO2012058143A2 Method and apparatus to remove deposits
05/03/2012WO2012058029A1 Method and system for fracture stimulation
05/03/2012WO2012058028A1 Method and system for fracturing a formation
05/03/2012WO2012058026A1 Method and system for fracture stimulation by formation displacement
05/03/2012WO2012058025A1 Method and system for fracture stimulation by cyclic formation settling and displacement
05/03/2012WO2012055028A1 Alkali-activated coatings for proppants
05/03/2012WO2012055009A1 Non-aqueous hydrocarbon recovery
05/03/2012WO2012037230A3 Enhanced recovery and in situ upgrading using rf
05/03/2012WO2012012098A8 Method for in situ fluid assessment and optimization during wellbore displacement operations
05/03/2012WO2011095512A3 Flow control device and flow control method
05/03/2012US20120103635 Dispersion compositions with nonionic surfactants for use in petroleum recovery
05/03/2012US20120103627 System and method for control of tools in a subterranean completion application
05/03/2012US20120103626 A well completion method
05/03/2012US20120103624 Large-offset direct vertical access system
05/03/2012US20120103621 Subsea system with subsea cooler and method for cleaning the subsea cooler
05/03/2012US20120103620 Remotely operated underwater redirection plenum chamber for spill response
05/03/2012US20120103617 Water based completion and displacement fluid and method of use
05/03/2012US20120103616 Methods of Fracturing Subterranean Formations Using Sulfonated Synthetic Gelling Agent Polymers
05/03/2012US20120103615 Viscous wellbore fluids
05/03/2012US20120103614 Method of Treating a Borehole and Drilling Fluid
05/03/2012US20120103613 Coal fines flocculation from produced water using oil-soluble phosphate ester
05/03/2012US20120103612 System and Method for Opening a Window in a Casing String for Multilateral Wellbore Construction
05/03/2012US20120103608 Gravel Pack Bypass Assembly
05/03/2012US20120103607 Method and apparatus for creating an annular barrier in a subterranean wellbore
05/03/2012US20120103606 Gravel Pack Assembly For Bottom Up/Toe-to-Heel Packing
05/03/2012US20120103605 Method for increasing the recovery of hydrocarbons
05/03/2012US20120103604 Subsurface heating device
05/03/2012US20120103603 Gravel Pack Inner String Hydraulic Locating Device
05/03/2012US20120103598 Sequencing algorithm for planned drill holes
05/03/2012US20120103596 down hole well tool with rolling means
05/03/2012US20120103223 Surface Safe Explosive Tool
05/03/2012DE102010050245A1 Decomposing carnallite deposits, comprises selective and/or non-selective solution mining, and obtaining potassium chloride as a main product and magnesium chloride brine from the magnesium chloride of carnallite
05/03/2012DE102010050244A1 Meißeldirektantrieb für Werkzeuge auf Basis einer Wärmekraftmaschine Direct bit drive for tools on the basis of a heat engine
05/03/2012DE102010002064B4 Verfahren zur Sanierung einer Erdreich-Bohrung Process for remedying soil-bore
05/03/2012CA2816351A1 Alkali-activated coatings for proppants
05/03/2012CA2816301A1 Method of making progressing cavity pumping systems
05/03/2012CA2815882A1 Non-aqueous hydrocarbon recovery
05/03/2012CA2813326A1 Method and system for fracture stimulation by cyclic formation settling and displacement
05/03/2012CA2813258A1 Method and system for fracture stimulation by formation displacement
05/03/2012CA2812811A1 Method and system for fracture stimulation
05/03/2012CA2812810A1 Method and system for fracturing a formation
05/02/2012EP2447468A2 Gravel Pack Assembly for Bottom Up/Toe-to-Heel Packing
05/02/2012EP2447467A1 Method for exploiting an oil deposit based on production data and seismic data history matching
05/02/2012EP2446117A2 Sampling skid for subsea wells
05/02/2012EP2446112A1 Apparatus and method for stimulating subterranean formations
05/02/2012EP2446111A2 Method for providing a temporary barrier in a flow pathway
05/02/2012EP2446109A2 Carbon capture and storage using minimal offshore structures
05/02/2012EP2446107A1 A completion assembly and a method for stimulating, segmenting and controlling erd wells
05/02/2012EP2446106A2 Apparatus and methods for forming and using subterranean salt cavern
05/02/2012EP2445995A1 Scavenger compositions and their use
05/02/2012EP2445985A1 Methods for treating a well with a cross-linked water-soluble polymer-complexed metal cation network and an aromatic compound capable of forming a chelating agent to uncross-link the polymer
05/02/2012EP2445603A1 Phase separator
05/02/2012EP2171093B1 Biological enhancement of hydrocarbon extraction
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