| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
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| 07/10/2012 | US8215406 Wellbore method and apparatus for completion, production and injection |
| 07/10/2012 | US8215384 Bit based formation evaluation and drill bit and drill string analysis using an acoustic sensor |
| 07/10/2012 | US8215164 Systems and methods for monitoring groundwater, rock, and casing for production flow and leakage of hydrocarbon fluids |
| 07/10/2012 | CA2577581C Methods and apparatus for measuring flow velocity in a wellbore using nmr and applications using same |
| 07/10/2012 | CA2563526C Methods and apparatus for measuring flow velocity in a wellbore using nmr and applications using same |
| 07/05/2012 | WO2012092131A2 Stress in formations from azimuthal variation in acoustic and other properties |
| 07/05/2012 | WO2012091803A2 Method and apparatus for logging a wellbore |
| 07/05/2012 | WO2012091791A2 Method and devices for terminating communication between a node and a carrier |
| 07/05/2012 | WO2012091760A1 Microcoil nmr for downhole microfluidics platform |
| 07/05/2012 | WO2012091599A1 Method for tracking a treatment fluid in a subterranean formation |
| 07/05/2012 | WO2012091575A1 Device for transfer of electrical signals and/or electrical energy |
| 07/05/2012 | WO2012089818A1 Method and system for determining the location of a fiber optic channel along the length of a fiber optic cable |
| 07/05/2012 | WO2012089815A1 Method and system for controlling water flux through an underground formation |
| 07/05/2012 | WO2012089795A1 Borehole inspection device and system with a self-cleaning system and method for loading explosives in boreholes |
| 07/05/2012 | WO2012054487A3 Production estimation in subterranean formations |
| 07/05/2012 | WO2012054342A3 Submersible pump system |
| 07/05/2012 | WO2012054298A3 Extending data retention of a data storage device downhole |
| 07/05/2012 | WO2012051189A3 Antenna apparatus and method for insulating |
| 07/05/2012 | WO2012024127A3 Downhole closed-loop geosteering methodology |
| 07/05/2012 | WO2012012449A3 System and method for reservoir characterization |
| 07/05/2012 | WO2011153635A8 Wellbore fluid treatment tubular and method |
| 07/05/2012 | WO2011110957A3 Logging system and methodology |
| 07/05/2012 | WO2011051432A8 Bubble logging tool |
| 07/05/2012 | US20120172072 ARC RFID Antenna |
| 07/05/2012 | US20120170615 Temperature sensor using an optical fiber |
| 07/05/2012 | US20120170410 Piping communication |
| 07/05/2012 | US20120170409 Determining the Order of Devices in a Downhole String |
| 07/05/2012 | US20120169841 Downhole Optical Imaging Tools and Methods |
| 07/05/2012 | US20120168519 Actuator |
| 07/05/2012 | US20120168153 Watercut sensor using reactive media |
| 07/05/2012 | US20120168152 Dissolvable barrier for downhole use and method thereof |
| 07/05/2012 | US20120168151 System and method for managing a subterranean formation |
| 07/05/2012 | CA2824669A1 Device for transmitting electrical signals and/or electrical energy |
| 07/05/2012 | CA2823896A1 Borehole inspection device and system with a self-cleaning system and method for loading explosives in boreholes |
| 07/05/2012 | CA2823269A1 Method and system for determining the location of a fiber optic channel along the length of a fiber optic cable |
| 07/04/2012 | EP2472056A1 Borehole inspection device and method for loading explosives in blast boreholes |
| 07/04/2012 | EP2470750A2 Fiber optic inner string position sensor system |
| 07/04/2012 | CN202309580U 四臂井径仪开收臂控制电路 Four-arm caliper arm control circuit open to close |
| 07/04/2012 | CN202302602U 一种用于示踪量子点测井方法中的微型摄像机的固定支架 A mounting bracket for the tracer logging method in quantum dots miniature cameras |
| 07/04/2012 | CN202300382U 井周超声成像下井仪扫描头 Well-week ultrasound imaging scanner head go down |
| 07/04/2012 | CN202300381U 井周超声成像下井仪 Well-week ultrasound imaging downhole instrument |
| 07/04/2012 | CN202300380U 一种水平井完井模拟试验装置 A horizontal well completion simulation test device |
| 07/04/2012 | CN202300378U 测井仪器井口防撞预警器 Logging equipment wellhead collision warning device |
| 07/04/2012 | CN202300377U Portable pressure-while-drilling fluctuation monitor |
| 07/04/2012 | CN202300376U 一种套管气提取加压装置 One kind of casing head gas extraction pressure device |
| 07/04/2012 | CN202300375U 牙轮钻机钻孔深度测试仪 Rotary drill drilling depth tester |
| 07/04/2012 | CN202300374U Measuring system for positioning drill bit under well accurately by utilizing microvibration |
| 07/04/2012 | CN202300373U 激光方位仪 Laser azimuth instrument |
| 07/04/2012 | CN202300372U Optical-fiber-gyroscope well-deviation and azimuth logging instrument capable of being hung on ground logging system |
| 07/04/2012 | CN202300371U 一种移动式油井井口计量装置 A portable measuring device wellhead |
| 07/04/2012 | CN202300370U 一种充油式测井电缆鱼雷 An oil-extended type wireline torpedo |
| 07/04/2012 | CN202300369U 一种双弱点充油式测井马龙头 A two weaknesses leading oil-filled horse logging |
| 07/04/2012 | CN202300368U 油气水单计量管自动计量装置 Single-tube gas-water metering automatic measuring device |
| 07/04/2012 | CN202300367U 基于Labview显示的水平连通井导向系统 Well-oriented communication system based on Labview level display |
| 07/04/2012 | CN202300366U 一种带蓄电瓶的移动式单井计量装置 A tape storage battery portable single well metering device |
| 07/04/2012 | CN202300363U 一种用于旋转导向钻井系统的测控装置 A rotary steerable drilling system for monitoring and control devices |
| 07/04/2012 | CN202300361U 油井计量分离装置 Well metering separation device |
| 07/04/2012 | CN202300306U Oil pipe detecting and blanking plug |
| 07/04/2012 | CN1861981B Apparatus and method for sensing downhole parameters. |
| 07/04/2012 | CN1756893B Method and system for cause-effect time lapse analysis |
| 07/04/2012 | CN102549236A System and method for sensing a liquid level |
| 07/04/2012 | CN102549231A Method and system for transferring signals through a drill pipe system |
| 07/04/2012 | CN102536218A Method for monitoring temperature of coal underground gasification working surface |
| 07/04/2012 | CN102536217A Positive pulse device for slurry under shaft |
| 07/04/2012 | CN102536216A Ground simulation test method for emitting and receiving electromagnetic wave wireless measurement while drilling (MWD) signal |
| 07/04/2012 | CN102536215A Device for wireless data transmission across testing valve on basis of quasi-stationary electromagnetic field and method thereof |
| 07/04/2012 | CN102536214A Signal transmission equipment for coal-bed gas well detection signals |
| 07/04/2012 | CN102536213A Gas seepage range observation method for coal mine |
| 07/04/2012 | CN102536212A Coupling alarming device |
| 07/04/2012 | CN102536211A Method for measuring and calculating liquid outlet temperature of well mouth of pumping unit well |
| 07/04/2012 | CN102536210A Direct-reading and testing integrated machine for downhole parameters of vertical well and horizontal well of oil field |
| 07/04/2012 | CN102536209A Device for measuring depth of gas drainage drill hole in slight vibration positioning manner |
| 07/04/2012 | CN102536208A Device and method for temperature compensation of accelerometer and fluxgate for underground directional-measuring instrument |
| 07/04/2012 | CN102536207A Gyro inclinometer attitude measurement solving method applicable to measurement of low well deviation angle |
| 07/04/2012 | CN102536206A Method for drilling azimuth measurement based on magnetic inclinometer in magnetic casing |
| 07/04/2012 | CN102536205A Direction shifting instrument specially for determining mine roadway direction |
| 07/04/2012 | CN102536204A Method for increasing transmitting efficiency of electromagnetic wave wireless measurement-while-drilling system by aid of multiple insulation short pieces |
| 07/04/2012 | CN102536203A Handheld type condition monitoring and fault diagnosing system orienting to oil field injection-production equipment |
| 07/04/2012 | CN102536202A Test piece for testing gas storage well completion sleeve-cement ring bonding strength and method for manufacturing test piece |
| 07/04/2012 | CN102536201A Multi-arm imaging data correcting method |
| 07/04/2012 | CN102536200A Method for predicting primary capacity of compact carbonate rock gas bearing formations |
| 07/04/2012 | CN102536199A Controllable source while-drilling nuclear logging tool calibration device and calibration method |
| 07/04/2012 | CN102536198A Electrode measuring pushing-against mechanism of casing-through resistivity logging instrument |
| 07/04/2012 | CN102536197A Multifunctional induction logging simulated experiment teaching system |
| 07/04/2012 | CN102536196A System and method for underground attitude measurement based on laser ranging and acceleration measurement |
| 07/04/2012 | CN102536195A Method for automatically dividing logging depositional sequence |
| 07/04/2012 | CN102536158A Uphole sealing method |
| 07/04/2012 | CN102536134A Centralizer for underground probe type measuring instrument |
| 07/04/2012 | CN102536132A Drilling tool joint convenient for inclinometry operation |
| 07/04/2012 | CN102530753A Electric drive logging truck |
| 07/04/2012 | CN101694156B Dipole acoustic small-signal processing unit |
| 07/04/2012 | CN101655008B Self-power generation type high-pressure impeller flowmeter of water injection well |
| 07/04/2012 | CN101550827B Method and device for preventing air from leaking in manometer |
| 07/04/2012 | CN101519954B Multifunctional combination operation process and device for injection pump unit |
| 07/04/2012 | CN101469607B Water injection technological process using three parameters test curve for layered pulling and running for water injection allocation |
| 07/04/2012 | CN101446194B Drilling fluid leak hunting device based on transient electromagnetic method |
| 07/04/2012 | CN101440706B Terrestrial heat downhole water level measuring system |
| 07/04/2012 | CN101418682B Well logging winche over-depth protective system |
| 07/04/2012 | CN101319610B Down-hole drilling direction ruler and fast orienting method for hole drilling |
| 07/04/2012 | CN101305159B Method of drilling and producing hydrocarbons from subsurface formations |