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)
12/2012
12/06/2012CA2835871A1 Proppant mixing and metering system
12/05/2012EP2530237A1 Sludge treatment plant associated with a tunnel boring machine with a pressurised heading face and method for managing such a plant.
12/05/2012CN202578646U Anti-pollution hot-washing oil extraction device
12/05/2012CN202578594U Fast mud mixing device
12/05/2012CN202578593U Drill chip collector
12/05/2012CN202578592U Debris homogenizing and destabilizing device
12/05/2012CN202578591U Sand discharging plate of chain-hanging type solid control system
12/05/2012CN202578590U Novel drilling fluid vibrating screen
12/05/2012CN202578589U Multifunctional string capable of washing well, logging and layering profile control flooding
12/05/2012CN202578588U Water hose safety lifting ring
12/05/2012CN202569757U Oil well flushing filter
12/05/2012CN102808596A Downhole constant pressure valve for oil tube
12/05/2012CN102808588A Shaft-bottom negative pressure generator for drilling
12/05/2012CN101309744B Method and apparatus to optimize the mixing process
12/04/2012US8322464 Method and apparatus for vacuum collecting and gravity depositing drill cuttings
12/04/2012US8322460 Dual density mud return system
12/04/2012US8322442 Well unloading package
12/04/2012US8322439 Arrangement and method for regulating bottom hole pressures when drilling deepwater offshore wells
12/04/2012US8322420 Toe-to-heel gravel packing methods
12/04/2012US8322419 Method of gravel packing a well containing synthetic or oil-based drilling fluids
12/04/2012CA2622362C Flow bearing for high pressure applications
12/01/2012CA2742325A1 Recirculation bin for drill tailings having deflector means, and a drill tailings handling apparatus
11/2012
11/29/2012DE112010004045T5 Kohlenwasserstoffbetriebsfluide und Verfahren zu deren Verwendung Hydrocarbon operating fluids and methods of use thereof
11/28/2012EP2526255A2 Differential pressure wellbore tool and related methods of use
11/28/2012EP2526254A1 Wellbore knock-out chamber and related methods of use
11/28/2012EP2526253A2 Ball drop module
11/28/2012EP2526252A1 Wellbore obstruction-clearing tool and method of use
11/28/2012CN202560297U Spiral catcher
11/28/2012CN202560163U Throttle valve
11/28/2012CN202560133U Gas lifting reverse circulation drilling device
11/28/2012CN202560132U Built-in bypass valve for screw drilling tool
11/28/2012CN202560131U Dust collecting device for percussion drill
11/28/2012CN202560130U Rotary jet-flow well flushing device
11/28/2012CN102803645A Drilling system and method of operating a drilling system
11/28/2012CN102797426A Water-supply device of rock drill and rock drill
11/28/2012CN102797425A Wind-water linked atomized dust removing and cleaning device for coal bed drilling exploration
11/28/2012CN102134964B Double-wall spindle power head for core drill
11/28/2012CN101936142B Aerated underbalanced drilling method for coal-bed gas
11/28/2012CN101595272B Microtunnelling system and apparatus
11/28/2012CN101560870B Foam base liquid recycling system in foam drilling
11/28/2012CN101273184B Apparatus and method of fragmenting hard particles
11/27/2012US8316966 Method and system for accessing subterranean deposits from the surface and tools therefor
11/27/2012US8316963 Cuttings processing system
11/27/2012US8316939 Method of installing sand control screens in wellbores containing synthetic or oil-based drilling fluids
11/27/2012CA2696683C Quintuplex mud pump
11/27/2012CA2565937C Continuous positive flow backflash prevention system
11/22/2012WO2012158768A1 Multi-deck shaker
11/22/2012WO2012158209A1 Shale shakers, separators, & screens with killing of living things in fluids
11/22/2012WO2012040140A3 System and method for controlling flow in a wellbore
11/22/2012US20120292109 Mobile pressure optimization unit for drilling operations
11/22/2012US20120292108 Mobile pressure optimization unit for drilling operations
11/22/2012US20120292107 Offshore universal riser system
11/22/2012US20120292020 Vortex Controlled Variable Flow Resistance Device and Related Tools and Methods
11/22/2012CA2836411A1 Multi-deck shaker
11/21/2012EP2523782A1 Percussion rock drilling machine and drill rig
11/21/2012CN202544907U Drilling, diversion, dust-settling and gas spray-preventing device
11/21/2012CN202544777U Drilling construction machine
11/21/2012CN102791960A Articulated pre-skimmer mount
11/21/2012CN102791955A Differential pressure wellbore tool and related methods of use
11/21/2012CN102791952A Method of drilling and abrasive jet drilling assembly
11/21/2012CN102791379A Cuttings wash apparatus and method
11/21/2012CN102787833A Hydraulic fracturing surging method for bedrock well and system device thereof
11/21/2012CN102787823A Downhole rotational flow shearing generator
11/21/2012CN102787817A Comprehensive simulation experimental device of drilling circulation system
11/21/2012CN102787816A Opposite slurry injection joint
11/21/2012CN102787815A Positive and negative circulation construction technology of ultra-deep bored piles
11/21/2012CN102787804A Device and method for drilling by using full-automatic composite material continuous pipe
11/21/2012CN101672157B Well-digging and hole-drilling device of oil-field underground pneumatic-hydraulic motor and application thereof
11/21/2012CN101617016B Method and apparatus for removing cuttings in high-angle wells
11/20/2012US8312920 Method and apparatus for automated fluid loss measurements of drilling fluids
11/20/2012CA2473372C Two string drilling system using coil tubing
11/15/2012WO2012154336A2 Heat removal in drilling and production operations
11/15/2012WO2012154167A1 Pressure and flow control in drilling operations
11/15/2012WO2012154057A1 Device and method for pressure regulation of a well
11/15/2012WO2012100136A3 Apparatus for removing and recovering oil from solids
11/15/2012US20120285910 Offshore cargo rack for use in transferring palletized loads between a marine vessel and an offshore platform
11/15/2012US20120285747 Percussion rock drilling machine and drill rig
11/15/2012CA2832720A1 Pressure and flow control in drilling operations
11/14/2012EP2521835A2 Rotating continuous flow sub
11/14/2012CN202531090U Well-flushing packer for oil jacket separate injection of casing water injection well
11/14/2012CN202531066U Blending and diluting valve capable of examining seal annularly for oil and gas fields
11/14/2012CN202531065U 钻井液过滤装置 Drilling fluid filtration device
11/14/2012CN202531064U Dust catcher of water jet spiral slag discharging hole
11/14/2012CN202531063U Small-sized liquid preparation device
11/14/2012CN202531062U Cycling well washing device of oil-water well
11/14/2012CN102782247A Wellbore knock-out chamber and related methods of use
11/14/2012CN102782246A Flow control arrangement and method
11/14/2012CN102777144A Hydraulic control cycling switch
11/14/2012CN102777143A Mud-modifying equipment with physical method
11/14/2012CN102777142A Integrated mud configuration module
11/14/2012CN102777141A Integrated mud purification module
11/14/2012CN102777140A Multidirectional jet sand washing device
11/14/2012CN102777139A Method for downhole coat transferring
11/14/2012CN102777138A Method combining coiled tubing with supercritical CO2 for jet-flow sand washing plugging removal
11/14/2012CN101942962B Well drilling method of through tubing of gas lift under-balanced coiled tubing
11/14/2012CN101641166B Electromagnetic treatment of contaminated materials
11/14/2012CN101463714B Foam cyclic utilization method used for under balance drilling
11/13/2012US8307918 Hydrocarbon recovery drill string apparatus, subterranean hydrocarbon recovery drilling methods, and subterranean hydrocarbon recovery methods
11/13/2012US8307913 Drilling system with drill string valves
11/13/2012CA2559006C Expander for expanding a tubular element
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