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)
06/2011
06/22/2011CN101255788B Thermochemistry auxiliary reinforced steam flooding method
06/21/2011US7964539 Well treatment
06/21/2011US7963342 Downhole isolation valve and methods for use
06/21/2011US7963338 Methods to treat produced water
06/21/2011US7963335 Subsea hydraulic and pneumatic power
06/21/2011US7963334 Method and apparatus for continuously injecting fluid in a wellbore while maintaining safety valve operation
06/21/2011US7963333 Controlling the pressure within an annular volume of a wellbore
06/21/2011US7963332 Apparatus and method for abrasive jet perforating
06/21/2011US7963331 Method and apparatus for isolating a jet forming aperture in a well bore servicing tool
06/21/2011US7963330 Resin compositions and methods of using resin compositions to control proppant flow-back
06/21/2011US7963329 Recovery and recycling of chemicals in chemical flooding process
06/21/2011US7963328 Process and apparatus for release and recovery of methane from methane hydrates
06/21/2011US7963326 Method and apparatus for utilizing pressure signature in conjunction with fall time as indicator in oil and gas wells
06/21/2011US7963325 Method and system for fracturing subsurface formations during the drilling thereof
06/21/2011CA2725708A1 Biotechnological process for hydrocarbon recovery in low permeability porous media
06/21/2011CA2688937A1 A multi-step solvent extraction process for heavy oil reservoirs
06/21/2011CA2648234C Rheology enhancers
06/21/2011CA2626755C Diverter plugs for use in well bores and associated methods of use
06/21/2011CA2600856C Water absorbing polymers for treatment of brines and water-based drilling fluids
06/21/2011CA2484714C Tubing anchor
06/21/2011CA2434357C Aqueous viscoelastic fluid
06/18/2011CA2725345A1 Integrated hydrogen production and hydrocarbon extraction
06/18/2011CA2711080A1 Methods of fracturing a well using venturi section
06/17/2011CA2715906A1 Downhole multi-parallel hydrocyclone separator
06/16/2011WO2011071858A1 Process for treating water in heavy oil production using coated heat exchange units
06/16/2011WO2011071797A1 Radical trap in oil and gas stimulation operations
06/16/2011WO2011071683A2 Offset interior slurry discharge
06/16/2011WO2011071670A2 Multi-position tool actuation system
06/16/2011WO2011071642A2 Multiple port crossover tool with port selection feature
06/16/2011WO2011071588A1 Method of controlling solvent injection to aid recovery of hydrocarbons from an underground reservoir
06/16/2011WO2011071585A1 Apparatus and method for installing a liner string in a wellbore casing
06/16/2011WO2011070453A2 Method for increasing fracture area
06/16/2011WO2011070323A1 A biodegradable set retarder for a cement composition
06/16/2011WO2011070143A2 System, apparatus and method for stimulating wells and managing a natural resource reservoir
06/16/2011WO2011070142A2 Method and apparatus for stimulating wells
06/16/2011WO2011069517A1 Pump system
06/16/2011WO2011069447A1 Method and system for segmental flow control in oil -gas well
06/16/2011WO2011069342A1 Segmental flow-control method for flow-control filter string in oil -gas well and oil-gas well structure
06/16/2011WO2011069341A1 Segmented current controlling method of current controlling filter pipe column for oil-gas well and structure of oil-gas well
06/16/2011WO2011069340A1 Oil-gas well structure for facilitating extracting downhole filter string and method for extracting string
06/16/2011WO2011069339A1 Isolating particles for preventing channeling in production section of oil-gas well, completion method and production method using the same
06/16/2011WO2011036575A3 Multi-layered sound attenuation mechanism
06/16/2011WO2011034694A3 Fracturing and gravel packing tool with shifting ability between squeeze and circulate while supporting an inner string assembly in a single position
06/16/2011WO2011031817A3 Energetic material applications in shaped charges for perforation operations
06/16/2011WO2011031682A3 Multiple electric submersible pump system
06/16/2011WO2011028560A3 Fracturing and gravel packing tool with multi-position lockable sliding sleeve
06/16/2011WO2011022324A3 Method for determining formation fluid control events in a borehole using a dynamic annular pressure control system
06/16/2011WO2011022220A3 Fiber optic gravel distribution position sensor system
06/16/2011WO2011021047A3 Downhole expandable roller bearing apparatus
06/16/2011WO2011020998A3 Method for improving waterflood performance using barrier fractures and inflow control devices
06/16/2011WO2011011608A4 Apparatus and method for coupling conduit segments
06/16/2011US20110139505 Shaped charge
06/16/2011US20110139465 Packing tube isolation device
06/16/2011US20110139464 Surface Gas Evaluation During Controlled Pressure Drilling
06/16/2011US20110139463 Systems and methods for producing oil and/or gas
06/16/2011US20110139462 Methods of investigating an underground formation and producing hydrocarbons, and computer program product
06/16/2011US20110139458 Well completion with hydraulic and electrical wet connect system
06/16/2011US20110139456 Controlled Fracture Initiation Stress Packer
06/16/2011US20110139455 Storing device for stored substance and method for storing stored substance
06/16/2011US20110139454 Method for Providing Thixotrophy to Fluids Downhole
06/16/2011US20110139453 Fluid flow control device
06/16/2011US20110139452 Systems and methods for producing oil and/or gas
06/16/2011US20110139451 Process for Treating Water in Heavy Oil Production Using Coated Heat Exchange Units
06/16/2011US20110139444 Drainage of heavy oil reservoir via horizontal wellbore
06/16/2011US20110139443 Monitoring fluid movement in a formation
06/16/2011US20110139441 System, apparatus and method for stimulating wells and managing a natural resource reservoir
06/16/2011US20110139440 Method and apparatus for stimulating wells
06/16/2011US20110139439 Biogenic fuel gas generation in geologic hydrocarbon deposits
06/16/2011US20110139433 Hydraulically-Actuated Propellant Stimulation Downhole Tool
06/16/2011US20110139432 System, method and assembly for steam distribution along a wellbore
06/16/2011CA2783932A1 System, apparatus and method for stimulating wells and managing a natural resource reservoir
06/16/2011CA2783931A1 Method and apparatus for stimulating wells
06/16/2011CA2783503A1 Segmental flow-control method for flow-control filter string in oil-gas well and oil-gas well structure
06/16/2011CA2783502A1 Segmented current controlling method of current controlling filter pipe column for oil-gas well and structure of oil-gas well
06/16/2011CA2783399A1 Method for increasing fracture area
06/16/2011CA2783392A1 Oil-gas well structure for facilitating extracting a downhole filter string and method for extracting the string
06/16/2011CA2783389A1 Anti-channeling pack-off particles used in a production section of an oil-gas well, and completion method and production method using such particles
06/16/2011CA2781452A1 A biodegradable set retarder for a cement composition
06/16/2011CA2779908A1 Process for treating water in heavy oil production using coated heat exchange units
06/16/2011CA2726384A1 Method and apparatus for dewatering using methane
06/15/2011EP2333235A1 Inflow control in a production casing
06/15/2011EP2333026A1 Method for producing crude oil
06/15/2011EP2331787A1 Nitrogen-free invert emulsion wellbore fluid
06/15/2011EP2331653A1 Method of installing sand control screens in wellbores containing synthetic or oil-based drilling fluids
06/15/2011CN201866532U CBM (coal bed methane) civil device
06/15/2011CN201866184U Novel pumping unit belt tensioner
06/15/2011CN201865660U Fully automatic well pumping unit photoelectric detecting device
06/15/2011CN201865655U Multiphase multi-well automatic control device of crude oil
06/15/2011CN201865653U CBM (coal bed methane) horizontal well system
06/15/2011CN201865652U Oil-gas deep well fracturing string
06/15/2011CN201865651U Enclosed oilfield water injection device without tank for injecting mixed fresh water and sewage water
06/15/2011CN201865650U Air-balanced sustained release device for high-pressure sleeve
06/15/2011CN201865649U Multi-stage perforation booster device
06/15/2011CN201865648U Horizontal well perforating gun
06/15/2011CN201865647U Planetary gear ring type pumping unit
06/15/2011CN201865646U Linear motor driving belt type pumping unit
06/15/2011CN201865645U Multi-linear-motor combined driving belt type pumping unit
06/15/2011CN201865644U Flexible connecting and tensioning device for pumping unit
06/15/2011CN201865643U Wheel-type pumping unit for guiding stroke-increasing device
06/15/2011CN201865642U Electric push rod slide frame
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