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 21 - Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
Patents for E21B 21 - Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor (13,780)
10/2012
10/03/2012CN202467726U A well washing device
10/03/2012CN202467725U Dual-track drilling fluid oscillating screen
10/03/2012CN202467724U Flushing fluid processing equipment
10/03/2012CN202467723U Dustproof transparent cover
10/03/2012CN202467722U Water drill sewage collection device
10/03/2012CN202467721U Non-pump-stopping continuous cycling and manifold controlling device for drilling well
10/03/2012CN202467705U One-way valve for drill rod
10/03/2012CN202467689U Continuous cycle pup joint for well drilling
10/03/2012CN202460202U Degassing equipment, as well as imbibition structure and imbibition head of degassing equipment
10/03/2012CN102713131A Equipment for quick dispersion of polyacrylamide powder for fracturing operations
10/03/2012CN102704908A Split-flow automatic control system of coal bed methane horizontal branch well and process thereof
10/03/2012CN102704875A Novel non-contact mud outlet flow instrument
10/03/2012CN102704874A Device and method for detecting drilling fluid return flow
10/03/2012CN102704873A Construction equipment of hole drilling/punching cast-in-place pile with self-provided mud pit and mud separating device
10/03/2012CN102704872A Gas-lift reverse circulation slurry circulation system
10/03/2012CN102704871A Method and device for further washing well in water source heat pump system
10/03/2012CN101871329B Drilling fluid PLC automatic control system and control method thereof
10/02/2012US8276686 Vacuum assisted drill cuttings dryer and handling apparatus
10/02/2012CA2684978C Use of curable liquid elastomers to produce gels for treating a wellbore
09/2012
09/27/2012WO2012128641A1 Method for monitoring the integrity of a sieve device and apparatus for practice of the method
09/27/2012WO2012127396A2 System for degassing a liquid
09/27/2012US20120241161 Flushing system
09/27/2012CA2829451A1 Treatment fluids containing a biodegradable chelating agent and methods for use thereof
09/26/2012EP2501891A2 Downhole circulation apparatus
09/26/2012CN202451113U Thermally-cleaning, wax-removing and oil layer pollution-preventing oil pumping pipe column
09/26/2012CN202451108U Ring-type integrated well-washing composite device
09/26/2012CN202451090U Energy-saving type water dust remover for projects
09/26/2012CN202451089U Desilter for oil field
09/26/2012CN202451088U Grit catcher of drilling fluid
09/26/2012CN102692140A Forced cooling system for petroleum drilling fluid
09/26/2012CN102691492A System and process of screen pipe completion and cross oil layer cementing for steam injection heavy oil well
09/25/2012US8273690 Crosslinkable polymer compositions comprising phenols and associated methods
09/25/2012US8272455 Methods for forming wellbores in heated formations
09/25/2012CA2692278C Composition and method for the solidification of toxic or hazardous drilling and agricultural waste
09/25/2012CA2684264C Reduced abrasion drilling fluid
09/25/2012CA2506098C Apparatus for recycling of oil based drilling fluid contaminated with water
09/25/2012CA2486235C An automatic control system and method for bottom hole pressure in the underbalance drilling
09/21/2012CA2771804A1 Use of high ratio aqueous alkali silicates in drilling fluids
09/20/2012WO2012125043A1 Method and device for cleaning drill cuttings
09/20/2012WO2012003101A3 System and method for controlling wellbore pressure
09/19/2012EP2500510A2 Mudline managed pressure drilling and enhanced influx detection
09/19/2012EP2499328A2 System and method for drilling a subsea well
09/19/2012CN202441371U Geological logging rock-debris sampling and cleaning device
09/19/2012CN202441320U Well flushing high pressure packer
09/19/2012CN202441292U Faucet for drilling machine
09/19/2012CN202441291U Drilling fluid recovering device
09/19/2012CN202441290U Liquid supply vehicle for oil field drilling
09/19/2012CN202441289U Wall boring dust absorption disc
09/19/2012CN202441288U Sand washing pipe of oil field horizontal well
09/19/2012CN102686821A Method of drilling and jet drilling system
09/19/2012CN102686365A Percussion rock drilling machine and drill rig
09/19/2012CN102678075A Mudline managed pressure drilling and enhanced influx detection
09/19/2012CN102678040A Drilling device and method for baseplate in coal mine roadway
09/19/2012CN101748990B Releasing packer well-washing device
09/18/2012US8267201 Method and apparatus for disposal of cuttings
09/18/2012US8267200 Cuttings treatment and reuse
09/18/2012CA2711335C Secondary emulsifiers for inverted emulsion fluids and methods for making and using same
09/18/2012CA2486972C Multi-variable well- or other shaft-drilling
09/13/2012WO2012122470A1 Method for charcterizing subsurface formations using fluid pressure response during drilling operations
09/13/2012WO2012122468A1 Method for automatic pressure control during drilling including correction for drill string movement
09/13/2012WO2012121949A1 Debris cleanup tool with flow reconfiguration feature
09/13/2012WO2012078406A3 Well control operational and training aid
09/13/2012US20120228030 Subsea Solids Processing Apparatuses and Methods
09/13/2012US20120228027 Method for characterizing subsurface formations using fluid pressure response during drilling operations
09/13/2012CA2829378A1 Method for charcterizing subsurface formations using fluid pressure response during drilling operations
09/13/2012CA2828830A1 Plug and pump system for routing pressurized fluid
09/13/2012CA2826896A1 Well treatment methods and systems
09/12/2012CN202431295U Gas-slag separation integrated temporary pumping device for coal mine underground drilling
09/12/2012CN202431239U Air-spray dust remover for drill rig
09/12/2012CN202431238U Ejector for dedusting device of drilling machine
09/12/2012CN202431237U Mud separation system for mechanical construction of hole pile of water and sand rich stratum shallow underground excavation subway station
09/12/2012CN202431236U Wet type dust removing system
09/12/2012CN202431190U Pile driving device capable of drilling rugged topography
09/12/2012CN102667056A Downhole-adjustable flow control device for controlling flow of a fluid into a wellbore
09/12/2012CN102667053A Wireline-adjustable downhole flow control devices and methods for using same
09/12/2012CN102667052A Permanent magnet direct drive mud pump
09/12/2012CN102667051A Downhole tool for borehole cleaning or for moving fluid in a borehole
09/12/2012CN102661146A Method for discontinuously acquiring underground pressure pulse of inflatable bored well
09/11/2012US8261826 Wellbore pressure control with segregated fluid columns
09/11/2012US8261819 Systems and methods for measuring a fluid level within a well
09/11/2012CA2726752C Surfactant materials and coatings for weighting agents for use in oil based drilling fluids
09/11/2012CA2680267C Method and apparatus for electrophoretic separation of solids and water from oil based mud
09/11/2012CA2650152C Flow operated orienter
09/07/2012WO2012096945A3 Method for cleaning drill cuttings
09/06/2012US20120222864 Completion arrangement
09/06/2012US20120222854 Shale shakers & separators with real time monitoring of operation & screens, killing of living things in fluids, and heater apparatus for heating fluids
09/06/2012DE102011013112A1 Drilling rig, particularly horizontal drilling rig, has drilling rod, which carries drilling tool and is driven by drill drive, and modular pump station consisting of two pump units for conveying drilling fluid
09/05/2012EP2494140A1 Permanent magnet direct drive mud pump
09/05/2012CN202417419U Self-anchoring well-flushing packer
09/05/2012CN202417410U Well washing packer
09/05/2012CN202417361U High-pressure water spray dedusting system for drilling machine
09/05/2012CN202417360U Pull type flushing fluid treatment vehicle
09/05/2012CN202417359U Collecting and recycling device for overflow liquid of producing wellhead
09/05/2012CN202417358U Drilling fluid vibrating screen
09/05/2012CN202417357U Vacuum degasser separation umbrella
09/05/2012CN202417356U Negative-pressure water jet dedusting device for orifice of underground drill rig for coal mines
09/05/2012CN202417355U Novel hydraulic flushing and slow drug dissolving device
09/05/2012CN202417354U Dust collector for electric coal drill
09/05/2012CN102654022A Multi-process pile hole construction method
09/05/2012CN101365861B Drill fluid collecting device
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