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)
07/2010
07/29/2010WO2010065646A3 Method for determining formation integrity and optimum drilling parameters during drilling
07/29/2010US20100186946 Bearing assembly retaining apparatus and well drilling equipment comprising same
07/29/2010CA2737279A1 Method and apparatus for down-the-hole drilling
07/28/2010EP2209566A2 Screen clamp
07/28/2010CN201535142U 一种钻孔内灭尘排渣装置 Slagging off the dust within a drilling unit
07/27/2010US7762357 Dual gradient drilling method and apparatus with an adjustable centrifuge
07/27/2010CA2630020C Apparatus and method for cleaning out sand from an underbalanced hydrocarbon producing well
07/27/2010CA2516277C Dynamic annular pressure control apparatus and method
07/27/2010CA2508254C Reverse circulation clean out system for low pressure gas wells
07/22/2010WO2010082165A1 Using a biphasic solution as a recyclable coiled tubing cleanout fluid
07/22/2010WO2010065311A3 Tubing weight operation for a downhole tool
07/22/2010WO2010053904A3 Non-aqueous breaker fluids and methods of use thereof
07/21/2010CN201531247U Anti-spit back screw drilling tool bypass valve
07/21/2010CN201531233U Automatic sand washing device for oil gauge separator
07/21/2010CN201531232U Double-purpose water tap for petroleum drilling machine
07/21/2010CN201531231U Multiparameter well-flushing tester
07/21/2010CN201531230U Double liquid pool balanced elliptical drilling fluid vibrating screen
07/21/2010CN201529618U Single staggered screen box of a vibrating screen
07/21/2010CN101784748A Automated borehole image interpretation
07/21/2010CN101780454A Bonding and preparation method of plate-type wave-shaped screen
07/20/2010US7757771 Wellhead seal unit
07/20/2010US7757766 Treating a well bore penetrating a subterranean formation comprising combining components water and a density-matched suspension to prepare a treatment fluid; the density-matched suspension comprises a suspending liquid and a solid particle suspended in the suspending liquid; nonsettling
07/20/2010US7757764 Method for drilling and casing a wellbore with a pump down cement float
07/20/2010CA2624328C Shale shaker
07/20/2010CA2622889C Apparatus and method for conveying drill cuttings
07/20/2010CA2477102C Drill cutting treatment method and apparatus
07/15/2010WO2010080867A2 Oilfield reclamation system
07/14/2010EP2205817A2 Anchored riserless mud return systems
07/14/2010CN201526452U Underground annulus suction screw pump
07/14/2010CN201526292U Slurry medicine stirring device for well
07/14/2010CA2649689A1 Drilling fluid for enhanced rate of penetration
07/13/2010CA2596282C Wellbore circulation system
07/13/2010CA2419650C System for performing wellbore operations
07/08/2010WO2010045090A3 Treatment of recovered wellbore fluids
07/08/2010WO2010030644A3 System and method for de-watering waste drilling fluids
07/07/2010CN201521269U Valve assembly of sleeve grouting circulation unfreezing device
07/07/2010CN201521247U Grouting drill bit with check valve
07/07/2010CN101769133A Drilling and grinding tubular column structure of drilling tool
07/07/2010CN101769132A Dust hood for drilling machine
07/07/2010CA2689719A1 Sand screw dryer
07/06/2010US7749942 Variable density fluids and methods of use in subterranean formations
07/06/2010US7748462 Actuating mechanism
07/06/2010US7748460 Method and apparatus for wellbore fluid treatment
07/06/2010CA2596318C Drilling and lining method using a spoolable tubing
07/06/2010CA2502698C Drill head steering
07/01/2010WO2010030274A3 Invert emulsion wellbore fluids and method for reducing toxicity thereof
07/01/2010US20100163309 Sub-Surface Deployment Valve
07/01/2010US20100163307 Drill Bits With a Fluid Cushion For Reduced Friction and Methods of Making and Using Same
06/2010
06/30/2010EP2201210A1 Variable position gas trap
06/30/2010EP1928769B1 Apparatus and method for conveying drill cuttings
06/30/2010CN201517382U Enclosed vibratory screen for well drilling of petroleum
06/30/2010CN201517381U Hydraulic rotary tool
06/30/2010CN101761485A Righting type downhole annular suction turbopump
06/30/2010CN101757874A Viscoelastic surfactant fluids and related methods of use
06/29/2010US7743829 Cement flow control tool
06/24/2010WO2010070190A1 Method and apparatus for down-the-hole drilling
06/24/2010WO2010069992A2 Riser valve
06/24/2010WO2010051208A3 Reduced waste cleaning methods for oil well related systems
06/24/2010WO2010046653A3 Drill pipe
06/24/2010WO2010031804A3 Polymer gels as flow improvers in water injection systems
06/24/2010WO2010020698A3 Equipment for quick dispersion of polyacrylamide powder for fracturing operations
06/24/2010US20100155067 Systems and methods for using a passageway through subterranean strata
06/24/2010CA2688765A1 Continuous fluid circulation valve for well drilling
06/23/2010EP2198115A1 Method of using pressure signatures to predict injection well anomalies
06/23/2010CN201513157U Inverse well-flushing double seal check valve
06/23/2010CN201513147U Slurry circulating device
06/23/2010CN201513146U Solar-powered integrated remote measuring and monitoring system
06/23/2010CN201513145U Adjustable pressure-limiting flow dividing device
06/23/2010CN201513144U Downhole reverse-circulation sand flusher for horizontal wells
06/23/2010CN201513143U Submersible faucet
06/23/2010CN201513131U Tubular column for drilling plugs in well repairing
06/23/2010CN101755105A Treatment and reuse of oilfield produced water
06/23/2010CN101748990A Releasing packer well-washing device
06/23/2010CN101748980A Cyclone separator set for separating and purifying cutting-carrying gas generated by gas drilling
06/23/2010CN101748979A Ground separating unit of gas drilling system
06/22/2010US7741249 Geosynthetic composite for borehole strengthening
06/22/2010US7741247 Methods and compositions for sealing fractures, voids, and pores of subterranean rock formations
06/22/2010US7740073 Wellhead seal unit
06/22/2010CA2603751C Invert emulsion based completion and displacement fluid and method of use
06/17/2010WO2010068347A2 Subsea solids processing apparatuses and methods
06/17/2010US20100147593 Subsea Solids Processing Apparatuses and Methods
06/17/2010US20100147534 Apparatus and method for facilitating the connection of tubulars using a top drive
06/17/2010US20100147532 Remote operated actuator system for drill string internal blowout preventer
06/16/2010EP2196516A1 Lost circulation material for drilling fluids
06/16/2010CN201507276U Sand prevention valve for controlling washing of well
06/16/2010CN201507256U Automatic filtration and back-flushing system for high-pressure water injection wells
06/16/2010CN201507240U Anti-blocking hollow rotor of screw drill
06/16/2010CN1826454B Downhole hammer drill
06/16/2010CN101737018A Real-time monitoring method and device of underbalanced drilling well bottom pressure
06/16/2010CN101737017A Multiple-anticorrosion anchor rod
06/15/2010US7736521 Circulating completion, workover and drilling fluids used in hydrocarbon oil recovery monitored by a viscometer generating a signal and divertingthe flow if the fluid viscosity is too high or too low for filtration by diatomaceous earth filter; viscosity is adjusted accordingly for reuse
06/15/2010US7735582 Insertable devices for retention systems, structures for attachment and methods of use
06/15/2010CA2447556C Propellant treatment and continuous foam removal of well debris
06/10/2010WO2010065646A2 Method for determining formation integrity and optimum drilling parameters during drilling
06/10/2010WO2010065311A2 Tubing weight operation for a downhole tool
06/10/2010WO2010064009A1 Methods and systems for characterizing lcm particle plugging and rheology in real time
06/10/2010US20100139986 Agitator for a Drill and Related Methods
06/10/2010CA2806479A1 Methods and systems for characterizing lcm particle plugging and rheology in real time
06/09/2010CN201502730U Cock-type mud valve
06/09/2010CN101725328A Initial storage type nitrogen circulating drilling system
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