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)
04/2012
04/19/2012US20120090899 Cuttings treatment and reuse
04/19/2012US20120090898 Method for cleaning oil from drill cuttings
04/19/2012US20120090893 Apparatus for and method of drilling a subterranean borehole
04/19/2012US20120090853 Drill pipe connector
04/19/2012CA2814370A1 Lift-gas optimization with choke control
04/19/2012CA2814041A1 Cleaning device
04/18/2012EP2142747B1 Method and assembly for abrasive jet drilling
04/18/2012CN202194642U 井矿盐水溶法开采专用设备 Mineral salt solution mining equipment
04/18/2012CN202194617U 防返吐一次充填防砂挤水泥封隔器 Anti-back filling sand spit a cement squeeze packer
04/18/2012CN202194601U Venting device of constant pressure degasser
04/18/2012CN202194600U Constant pressure degasser
04/18/2012CN202194599U Protection frame of constant pressure degasser
04/18/2012CN102418484A 钻井液自动快速配浆系统 Drilling fluid system automatically and quickly with slurry
04/18/2012CN101338658B 可进行钢丝作业的密闭电潜泵生产完井系统及操作方法 Steel operations can be sealed ESP completion systems of production and method of operation
04/17/2012US8157003 Integrated carbon management system for petroleum refining
04/15/2012CA2755144A1 Apparatus and method for cleaning oil from drill cuttings
04/12/2012WO2012047689A2 Apparatus and system for processing solids in subsea drilling or excavation
04/12/2012WO2012047534A2 Fill up and circulating tool with well control feature
04/12/2012WO2012006344A3 Dual-flow valve and swivel
04/12/2012WO2011161423A3 Screening methods and apparatus
04/12/2012WO2011085031A3 Rotating continuous flow sub
04/12/2012US20120088697 Foamer/sulfur scavenger composition and methods for making and using same
04/12/2012US20120085530 Treatment for Recycling Fracture Water - Gas and Oil Recovery in Shale Deposits
04/12/2012CA2813459A1 Apparatus and system for processing solids in subsea drilling or excavation
04/12/2012CA2812548A1 Fill up and circulating tool with well control feature
04/11/2012CN202187734U 钻井液用离心机 Drilling Fluid Centrifuge
04/11/2012CN202187733U 一种新型钻杆滤清器 A new drill pipe cleaner
04/11/2012CN102409989A 抽放钻孔集尘装置 Drainage hole dust collection device
04/11/2012CN102407224A 一种抗磨防垢筛网 One kind of wear scale screen
04/10/2012US8151906 Microtunnelling system and apparatus
04/10/2012US8151904 Method for improved well control with a downhole device
04/05/2012WO2011112831A3 System and method for separating solids from fluids
04/05/2012US20120080195 Drilling Composition, Process for its Preparation, and Applications Thereof
04/05/2012US20120080185 Drilling waste management system
04/05/2012US20120080183 Remotely controlled apparatus for downhole applications, components for such apparatus, remote status indication devices for such apparatus, and related methods
04/05/2012US20120079937 Device for capturing gas from a produced water stream
04/04/2012CN202181873U 一种注水封隔器 One kind of injection packer
04/04/2012CN202181866U 可升降式钻井液用离心机 Centrifuges can lift drilling
04/04/2012CN202181854U 微型折叠式自动钻井机 Miniature folding automatic drilling machine
04/04/2012CN102405328A 钻探地下钻孔的设备和方法 Underground drilling equipment and drilling methods
04/04/2012CN102400653A 连续循环系统 Continuous circulation system
04/03/2012US8148303 Surfactant additives used to retain producibility while drilling
04/03/2012US8146681 Drilling tool and drilling method
04/03/2012US8146657 Systems and methods for inferring free gas production in oil and gas wells
04/03/2012CA2693431C Drilling fluid additive for reducing lost circulation in a drilling operation
04/03/2012CA2615229C Method and apparatus for utilizing pressure signature in conjunction with fall time as indicator in oil and gas wells
04/01/2012CA2715944A1 Drilling waste management system
03/2012
03/29/2012WO2012040140A2 System and method for controlling flow in a wellbore
03/29/2012WO2012038583A1 Method and apparatus for down-the-hole drilling
03/28/2012EP2433702A1 Process for separating kinetic hydrate polymer inhibitors
03/28/2012CN202176326U 矿井钻机及其气水自动切换装置 Mine gas-water drilling rigs and automatic switching device
03/28/2012CN202176311U 方钻杆或油管旋塞阀开关定位装置 Kelly or tubing plug switch positioning device
03/28/2012CN202176293U 钻井液振动筛的防飞溅装置 Shale shaker anti-splash device
03/28/2012CN202176292U 钻井液振动筛的偏心压紧结构及其偏心轮压紧装置 Shale shaker eccentric clamping structure and the eccentric clamping device
03/28/2012CN202176291U 变频式平动椭圆钻井液振动筛 Inverter balanced elliptical shale shaker
03/28/2012CN202176271U 一种瓦斯抽放孔用风钻及其文丘里管接头 One kind of gas drainage hole with a pneumatic drill and a venturi tube fittings
03/28/2012CN102392676A Integrated device for separating gas, water and slag
03/28/2012CN102392613A Automatic splash-proof device for wellhead drilling fluid
03/28/2012CN102392612A Underbalanced drilling liquid-gas separator
03/28/2012CA2752928A1 Novel weight materials for use in cement, spacer and drilling fluids
03/27/2012US8143570 Method and apparatus for detecting while drilling underbalanced the presence and depth of water produced from the formation
03/27/2012US8141642 Fill up and circulation tool and mudsaver valve
03/27/2012CA2535531C Electrical treatment for oil based drilling or completion fluids
03/22/2012WO2012037521A1 Multi-purpose fill and circulate well tool
03/22/2012WO2012037443A2 Method and apparatus for precise control of wellbore fluid flow
03/22/2012WO2012037357A2 Tank system
03/22/2012WO2012037301A2 Return fluid separator
03/22/2012WO2012037243A2 Feeder with screen for shaker
03/22/2012WO2012035001A2 Drilling apparatus
03/22/2012US20120067590 Arrangement and method for regulating bottom hole pressures when drilling deepwater offshore wells
03/22/2012CA2811443A1 Feeder with screen for shaker
03/22/2012CA2811309A1 Method and apparatus for precise control of wellbore fluid flow
03/22/2012CA2811237A1 Drilling apparatus
03/22/2012CA2808136A1 Multi-purpose fill and circulate well tool
03/22/2012CA2752963A1 Solids removal system and method
03/21/2012CN202170770U 泥浆伞 Mud umbrella
03/21/2012CN202170769U 药品罐装置 Canister device
03/21/2012CN202170768U 反循环冲沙装置 Reverse circulation flushing device
03/21/2012CN102383827A Drilling safety protection device for mining
03/21/2012CN102383751A Dual-pipe drilling slag removing method and device
03/21/2012CN102383750A Continuous positive and negative integrated sand washing device for oil well
03/21/2012CN102383749A Slurry discharging device of power head drill
03/21/2012CN102383734A Injection-type hole flushing drilling tool
03/21/2012CN102383727A Drilling machine special for one-step well drilling and working method thereof
03/21/2012CN101353951B Pile bottom hole clearing system and process of pile bottom hole clearing
03/20/2012CA2654461C Device for channeling solids and fluids within a reverse circulation drill
03/20/2012CA2646998C Recovery system
03/17/2012CA2752261A1 Complementary surfactant compositions and methods for making and using same
03/15/2012WO2012033872A2 Offshore thermal treatment of drill cuttings fed from a bulk transfer system
03/15/2012WO2012033741A2 Apparatus and system to allow tool passage ahead of a bit
03/15/2012WO2011101344A3 A valve device for a side pocket or a sub in a well
03/15/2012CA2810970A1 Arrangement at a rock drill and a rock drill
03/15/2012CA2810414A1 Offshore thermal treatment of drill cuttings fed from a bulk transfer system
03/14/2012EP2427629A2 Downhole tool
03/14/2012EP2427628A2 Downhole tool
03/14/2012EP2427627A2 Downhole material delivery
03/14/2012EP1875036B1 Device for extracting at least one type of gas contained in a drilling mud, an analysis arrangement and a related extraction method
03/14/2012CN202165052U 钻具旁通阀 Drill bypass valve
03/14/2012CN202165037U 一种井涌、井漏的实时检测装置 A kick, live wells leak detection device
03/14/2012CN202165036U 井筒清砂管柱 Wellbore sand column
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