| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
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| 06/20/2012 | CN202280455U 高精度井下电磁测厚井径仪 Downhole electromagnetic high-precision thickness measurement caliper |
| 06/20/2012 | CN102505939A Stratified fluid monitoring and sampling device based on pressure pulse |
| 06/20/2012 | CN102505938A Well periphery ultrasonic imaging downhole cartridge scanning head |
| 06/20/2012 | CN102505937A Dual-induction eight-lateral logger and temperature compensation method of dual-induction eight-lateral logger coil system |
| 06/20/2012 | CN102505936A Double-boosting sealing device for determining coal seam gas pressure |
| 06/20/2012 | CN102505935A Excitation circuit of transducer array of three-dimensional acoustic wave downhole instrument |
| 06/20/2012 | CN102505934A Method for detecting throughness of filling drill hole |
| 06/20/2012 | CN102505933A Variable range metering device of oil well gas liquid metering separator |
| 06/20/2012 | CN102505932A Method for identifying reservoir fluid properties based on extracted chaotic characteristic parameters |
| 06/20/2012 | CN102505931A Gas-liquid separating and oil-water-gas three-phase flow measuring device |
| 06/19/2012 | US8203908 Intelligent efficient servo-actuator for a downhole pulser |
| 06/19/2012 | US8201625 Borehole imaging and orientation of downhole tools |
| 06/19/2012 | CA2651686C Apparatus and methods for utilizing a downhole deployment valve |
| 06/14/2012 | WO2012078726A2 Power allocation to downhole tools in a bottomhole assembly |
| 06/14/2012 | WO2012078510A2 Methods for improved active ranging and target well magnetization |
| 06/14/2012 | WO2012078467A2 Pressure measurement in highly deviated wells |
| 06/14/2012 | WO2012078406A2 Well control operational and training aid |
| 06/14/2012 | WO2012078226A1 System and method for declustering well log samples |
| 06/14/2012 | WO2012078204A1 Gas generator for pressurizing downhole samples |
| 06/14/2012 | WO2012078166A1 System and method for acoustic recording in well bottomhole assembly while firing a perforating gun |
| 06/14/2012 | WO2012076682A1 Wireless communication between tools |
| 06/14/2012 | WO2012054146A3 System and method for automatic detection and analysis of borehole breakouts from images and the automatic generation of alerts |
| 06/14/2012 | WO2012047995A3 Torsionally vibrating viscosity and density sensor for downhole applications |
| 06/14/2012 | WO2012047983A3 A method and apparatus for estimating viscosity and density downhole using a relaxed vibrating electrically conductive element |
| 06/14/2012 | WO2012045122A3 Device and method for data communication through metal |
| 06/14/2012 | WO2012037452A3 Reservoir navigation using magnetic field of dc currents |
| 06/14/2012 | WO2012035001A3 Managed pressure drilling apparatus |
| 06/14/2012 | WO2012033684A3 Image enhancement for resistivity features in oil-based mud image |
| 06/14/2012 | WO2012031264A3 Method to predict dense hydrocarbon saturations for high pressure high temperature |
| 06/14/2012 | WO2012027492A4 Reservoir pressure monitoring |
| 06/14/2012 | WO2011149898A3 Surface detection of failed open-hole packers using tubing with external tracer coatings |
| 06/14/2012 | WO2011083399A3 Methods and apparatus to process measurements associated with drilling operations |
| 06/14/2012 | WO2011056262A8 Communication port for use on a wellbore measuring instrument |
| 06/14/2012 | US20120149604 Chemical Scavenger For Downhole Chemical Analysis |
| 06/14/2012 | US20120147381 Optical Fiber Reflective Sensor Interrogation Device |
| 06/14/2012 | US20120146806 Apparatus and method for downhole communication |
| 06/14/2012 | US20120145458 Rotary steerable drilling system |
| 06/14/2012 | US20120145384 Cased borehole tool orientation measurement |
| 06/14/2012 | US20120145383 Pressure measurement in highly deviated wells |
| 06/14/2012 | US20120145382 System and Method for Operating Multiple Valves |
| 06/14/2012 | US20120144913 Sensor unit for a logging tool and a logging tool with at least two sensor elements |
| 06/14/2012 | DE112010003039T5 Schleifringvorrichtung für ein lenkbares Drehwerkzeug Slip-ring assembly for a steerable rotary tool |
| 06/14/2012 | DE102011120563A1 Aktive Kompensation eines Schlammtelemetriemodulators und einer Turbine Active compensation of a mud telemetry modulator and a turbine |
| 06/14/2012 | DE102011120562A1 Nullsummen-Druckabfall-Schlammtelemetriemodulator Zero-sum pressure drop mud telemetry modulator |
| 06/14/2012 | CA2820830A1 Wireless communication between tools |
| 06/14/2012 | CA2820224A1 Methods for improved active ranging and target well magnetization |
| 06/14/2012 | CA2818014A1 Pressure measurement in highly deviated wells |
| 06/14/2012 | CA2815324A1 System and method for declustering well log samples |
| 06/13/2012 | EP2463478A1 Wireless communication between tools |
| 06/13/2012 | CN202273674U 管状钢环自锁器 Tubular steel ring self-locking device |
| 06/13/2012 | CN202273673U 注气井温度压力连续监测装置 Continuous monitoring of temperature and pressure gas injection device |
| 06/13/2012 | CN202273672U 地下井水位观测装置 Underground well water level monitoring device |
| 06/13/2012 | CN202273671U 无线随钻复合多点仪器 MWD complex multi-instrument |
| 06/13/2012 | CN202273670U 采油井口三元流体不分离测量仪 Three yuan wellhead fluid does not separate measuring instrument |
| 06/13/2012 | CN202273669U 一种放射性同位素示踪剂井下释放器 A radioactive isotope tracer downhole releaser |
| 06/13/2012 | CN202273667U 一种火驱无缆式电点火管柱 One kind of fire flooding untethered electric ignition column |
| 06/13/2012 | CN102493804A Oil well safety wireless data collecting monitoring system |
| 06/13/2012 | CN102493803A Three-axle-table-based oil-gas migration simulator, and simulation experiment method |
| 06/13/2012 | CN102493802A Anti-fog protection device of borehole television probe |
| 06/13/2012 | CN102493801A Full hole multiprobe oil gas flow measurement device |
| 06/13/2012 | CN102493800A Euler obtaining method for perforating charge performance parameter |
| 06/13/2012 | CN102493788A Method of gas recovery by water drainage for high-coal-rank coal-bed methane well |
| 06/13/2012 | CN102493766A Borehole track control method and borehole track control system |
| 06/12/2012 | US8196678 Method of downlinking to a downhole tool |
| 06/12/2012 | US8196660 Method and apparatus to treat well stimulation fluids in-situ |
| 06/12/2012 | US8196656 Position sensor for well tools |
| 06/07/2012 | WO2012075365A2 Mining systems and methods |
| 06/07/2012 | WO2012075021A1 Contamination resistant connecting system and method |
| 06/07/2012 | WO2012074834A2 Logging-while-drilling tool incorporating electronic radiation generator and method for using same |
| 06/07/2012 | WO2012074755A2 Cutter with diamond sensors for acquiring information relating to an earth-boring drilling tool |
| 06/07/2012 | WO2012074667A2 Interpretation of real time compaction monitoring data into tubular deformation parameters and 3d geometry |
| 06/07/2012 | WO2012074666A2 Interpretation of real time casing image (rtci) data into 3d tubular deformation image |
| 06/07/2012 | WO2012074665A2 An integrated solution for interpretation and visualization of rtcm and dts fiber sensing data |
| 06/07/2012 | WO2012074664A2 Modeling an interpretation of real time compaction modeling data from multi-section monitoring system |
| 06/07/2012 | WO2012074663A1 Determination of strain components for different deformation modes using a filter |
| 06/07/2012 | WO2012047431A3 Orientable eccentric downhole assembly |
| 06/07/2012 | WO2012021485A3 Method and apparatus for measuring fluid process variable in a well |
| 06/07/2012 | WO2012012637A3 Smart seals and other elastomer systems for health and pressure monitoring |
| 06/07/2012 | WO2011133530A4 Formation evaluation using a bit-based active radiation source and a gamma ray detector |
| 06/07/2012 | WO2011114152A3 Wireless auxiliary monitoring and control system for an underwater installation |
| 06/07/2012 | US20120138320 Method for determining the wear of a force-loaded linkage of an earth-working device |
| 06/07/2012 | US20120138291 Subterranean formation deformation monitoring systems |
| 06/07/2012 | CA2819662A1 Interpretation of real time compaction monitoring data into tubular deformation parameters and 3d geometry |
| 06/07/2012 | CA2819658A1 Interpretation of real time casing image (rtci) data into 3d tubular deformation image |
| 06/07/2012 | CA2819653A1 Modeling an interpretation of real time compaction modeling data from multi-section monitoring system |
| 06/07/2012 | CA2819651A1 Determination of strain components for different deformation modes using a filter |
| 06/07/2012 | CA2819640A1 Mining systems and methods |
| 06/07/2012 | CA2819454A1 Cutter with diamond sensors for acquiring information relating to an earth-boring drilling tool |
| 06/07/2012 | CA2819439A1 An integrated solution for interpretation and visualization of rtcm and dts fiber sensing data |
| 06/07/2012 | CA2819180A1 Contamination resistant connecting system and method |
| 06/06/2012 | EP2459847A2 Reservoir mapping with fracture pulse signal |
| 06/06/2012 | EP2459841A2 Measurement apparatus |
| 06/06/2012 | EP2459840A1 Improvements in or relating to cooling |
| 06/06/2012 | CN202268411U Battery can connective structure for wireless inclinometer |
| 06/06/2012 | CN202266299U 计量站外输油管线压力温度监测报警装置 Pipeline metering station outside pressure and temperature monitoring and alarm device |
| 06/06/2012 | CN202266256U 一种验管泄流装置 One kind of discharge tube inspection device |
| 06/06/2012 | CN202266255U 在石油测井系统中实现深度测量的装置 Achieve depth measurement devices in the oil well logging system |
| 06/06/2012 | CN202266254U 一种井下仪器减震装置 A downhole instrument damping device |
| 06/06/2012 | CN202266253U 空气泡沫钻井模拟试验装置 Air foam drilling simulation test device |
| 06/06/2012 | CN202266252U 一种探头式绞车传感器 One kind of sensor probe winch |