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)
06/2012
06/27/2012CN202284456U 一种空气钻井井下阻火阀 An air drilling downhole valve Fire
06/27/2012CN202284455U 综合录井脱气器正反向旋流搅拌器 Comprehensive logging degasser pros and cons to the cyclone blender
06/27/2012CN202284447U 防腐耐磨高效螺杆钻具 Efficient corrosion resistant screw drill
06/27/2012CN102518801A Special faucet washing pipe compound sealing device for petroleum drilling machine
06/27/2012CN102518406A Dust and sand removing recovery device for gases
06/27/2012CN102518405A Integrated vacuum negative-pressure three-level dust removal system
06/27/2012CN102518404A Coal mine down-hole drill hole water jet negative-pressure dedusting device
06/27/2012CN102518393A Combined down-the-hole hammer
06/26/2012CA2656375C Fluid loss additive for oil-based muds
06/21/2012WO2012080487A1 Downhole completion
06/21/2012WO2012080485A1 An inflow assembly
06/21/2012WO2011117602A3 Mechanical counter
06/21/2012WO2011117601A3 Downhole actuating apparatus
06/21/2012US20120152619 Apparatus and method for position-sensitive pipe provisioning in top-drive drilling
06/21/2012CA2821841A1 Downhole completion
06/21/2012CA2821835A1 An inflow assembly
06/20/2012EP2466059A1 Sliding sleeve
06/20/2012EP2466058A1 An inflow assembly
06/20/2012EP2464816A2 System and method for servicing a wellbore
06/20/2012EP2185276B1 Chemical treatment of cuttings for re-injection into subterranean formations
06/20/2012DE202012004635U1 Einrichtung zur Zuführung von Spülmedium in einem Bohrhammer Means for supplying flushing medium in a hammer drill
06/20/2012CN202280435U Electrically-controlled automatic throttling system for oil-gas wells
06/20/2012CN102505924A Floating oil recovery device in drilling fluid for offshore drilling
06/20/2012CN102505918A Rotary dragging reaming device
06/19/2012US8201628 Wellbore pressure control with segregated fluid columns
06/19/2012CA2707363C Application of microturbines to control emissions from associated gas
06/19/2012CA2651686C Apparatus and methods for utilizing a downhole deployment valve
06/14/2012WO2012078406A2 Well control operational and training aid
06/14/2012WO2012048144A3 Downhole tools and methods for selectively accessing a tubular annulus of a wellbore
06/14/2012WO2012035001A3 Managed pressure drilling apparatus
06/14/2012US20120145456 Consistent Drilling Fluids Engineering and Management
06/14/2012US20120145408 Apparatus and method for facilitating the connection of tubulars using a top drive
06/13/2012CN202273652U 一种通井刮削验管多功能封隔器 One kind of scrape through test tube wells multifunction packer
06/13/2012CN202273627U 多功能压井放喷管汇 Multifunction kill put the nozzle sinks
06/13/2012CN202273617U 一种海上钻井钻井液中浮油回收装置 One kind of offshore drilling in the oil slick recovery
06/13/2012CN202273616U 钻井液固液两相预分离器 Solid-liquid two-phase drilling preseparator
06/13/2012CN202273615U 一种打钻除尘装置 One kind of drilling dust removal device
06/13/2012CN202273426U 清孔装置 Chiang Khong device
06/13/2012CN102493808A Method for digging deep well manually
06/13/2012CN102493794A Coal bed methane exploring method of spraying gas-water mixed liquid to drill well and forming quincunx radial horizontal well
06/13/2012CN102493435A Boring and trenching gas lift reverse circulation residue discharging method
06/12/2012US8196664 Actuating mechanism
06/12/2012CA2681356C Blending fracturing geltechnical field
06/12/2012CA2629390C Flow switchable check valve
06/12/2012CA2531330C Device for transporting particles of a magnetic material and tool comprising such a device
06/07/2012WO2012074607A1 Automatic bypass for esp pump suction deployed in a pbr in tubing
06/07/2012WO2012071672A1 Treatment of produced water
06/07/2012WO2012047534A3 Fill up and circulating tool with well control feature
06/07/2012WO2012014178A3 Drilling fluid recovery when drilling under an obstacle or water body
06/07/2012US20120138298 Methods and apparatus for wellbore construction and completion
06/07/2012CA2819713A1 Treatment of produced water
06/06/2012EP2459842A2 Wellbore cleanout tool
06/06/2012DE102010053048A1 Double pipe drilling strand valve has outer sleeve and inner sleeve, where outer sleeve is connected at two axial ends with outer pipe of double pipe drilling strand
06/06/2012CN202266253U 空气泡沫钻井模拟试验装置 Air foam drilling simulation test device
06/06/2012CN202266214U 不间断循环钻井系统 Continuous loop drilling system
06/06/2012CN202266213U Continuous cyclic drilling short piece
06/06/2012CN202266212U 钻井液自动快速配浆装置 Drilling device automatically and quickly with slurry
06/06/2012CN202266211U 一种冲击钻收尘装置 An impact drill dust collection device
06/06/2012CN202266210U Continuous circulation drilling device
06/06/2012CN202266209U 油水井刮套冲砂器 Scraping oil wells washed sand filter sets
06/05/2012US8191627 Tubular embedded nozzle assembly for controlling the flow rate of fluids downhole
06/05/2012CA2541891C Zeolite-containing cement composition
06/05/2012CA2467122C Latching system for maintaining position of component within a downhole drill string section
05/2012
05/31/2012WO2012071351A1 Polymer blending system
05/31/2012WO2012071194A2 Eccentric safety valve
05/31/2012WO2012071128A1 Methods for disposing of produced water recovered during hydrocarbon drilling, production or related operations
05/31/2012WO2012068610A1 Flow measurement
05/31/2012WO2012037443A3 Method and apparatus for precise control of wellbore fluid flow
05/31/2012WO2012037243A3 Feeder with screen for shaker
05/31/2012CA2818874A1 Polymer blending system
05/30/2012EP2458136A1 Method of bio-remediating wellbore cuttings
05/30/2012CN202251801U Differential for debris dryer
05/30/2012CN202250061U Ultrasonic vibration type continuous and quantitative degassing device for oil drilling liquid
05/30/2012CN202250028U Pressure-control well drilling monitoring system for oil and gas wells
05/30/2012CN202250027U Closed-loop managed pressure drilling system
05/30/2012CN202250020U Skid-mounted gas-liquid airtight separation device for cluster well field oil test and production
05/30/2012CN202249993U Three-stage three-section back-washing well inserting seal sleeve protected separate injection tubing string
05/30/2012CN202249920U Pumping packer
05/30/2012CN202249918U Well-flushing self-test sealing packer
05/30/2012CN202249917U Back flushing packer
05/30/2012CN202249881U Planar ferromagnetic salvaging tool
05/30/2012CN202249865U Wellhead pressure pumping device
05/30/2012CN202249864U Sand control pipe blocking ball
05/30/2012CN202249863U Quick positive and negative alternative circulation flush valve for oilfield oil well
05/30/2012CN202249862U Electric control throttling device for oil drilling well
05/30/2012CN202249861U Slurry flow measuring device
05/30/2012CN202249860U Splash-proof automatic device for wellhead drilling fluid
05/30/2012CN202249859U Separating tank of vacuum degasser
05/30/2012CN202249858U Anti-blocking mixing device
05/30/2012CN202249857U Dust remover for mine
05/30/2012CN202249856U Dust collector for mine dust catcher
05/30/2012CN202249855U Orifice dust catcher
05/30/2012CN202249854U Screen of rock debris drying machine
05/30/2012CN202249853U Rock debris convey module for seal type solid control system in high and cold area
05/30/2012CN202249852U Gas blowout preventing and sprayed mist dust falling integrated device
05/30/2012CN202249851U Reverse circulation hole forming equipment for cast-in-place pile
05/30/2012CN202249850U Sand washing and bailing device of absorption well
05/30/2012CN202249849U Underground pressurizing device
05/30/2012CN102482918A 钻头 Drill
05/30/2012CN102477846A Soil-layer broaching bit
1 ... 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 ... 138