| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
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| 06/19/2014 | US20140166267 Suction Pressure Monitoring System |
| 06/19/2014 | US20140166266 Sensing indicator having rfid tag, downhole tool, and method thereof |
| 06/19/2014 | US20140165715 Methods and Apparatus for Determining Downhole Parameters |
| 06/18/2014 | EP2743448A1 Mud pulse telemetry devices, systems, and methods |
| 06/18/2014 | EP2743447A1 Method and apparatus for analyzing image data generated during underground boring or inspection activities |
| 06/18/2014 | EP2743326A1 New tracers for the study of an oil reservoir in high salinity and high temperature conditions |
| 06/18/2014 | EP2742371A2 Energy radiation generator with bi-polar voltage ladder |
| 06/18/2014 | EP2742370A2 Energy radiation generator with uni-polar voltage ladder |
| 06/18/2014 | EP2742208A1 Systems and methods for the evaluation of passive pressure containment barriers |
| 06/18/2014 | DE102012223458A1 Videosonde und Verfahren zur Inspektion von Bohrlöchern Video probe and method for inspection of boreholes |
| 06/18/2014 | CN203660953U 潜油地面控制装置 Submersible ground control device |
| 06/18/2014 | CN203655278U 面向岩性的岩屑在线自然伽玛录井仪 Lithology cuttings for online natural gamma logging instrument |
| 06/18/2014 | CN203655277U 一种随钻电阻率的测量装置 An MWD device resistivity |
| 06/18/2014 | CN203655274U 一种利用高频磁力仪随钻边界探测装置 A use of high-frequency magnetometer drilling boundary detection device |
| 06/18/2014 | CN203655273U 一种射孔多用途监测装置 Perforating and versatile monitoring device |
| 06/18/2014 | CN203655272U 新型机械式直井测斜仪的脉冲发生器 The new mechanical vertical wells inclinometer pulse generator |
| 06/18/2014 | CN203655271U 一种气井管壁检测镜 One kind of gas detection tube wall mirror |
| 06/18/2014 | CN203655270U 一种智能钻孔电视成像仪 An intelligent drilling TV imager |
| 06/18/2014 | CN203655269U 一种连续油管指重表 A continuous tubing weight indicator |
| 06/18/2014 | CN203655268U 一种带流量方向测量功能的热采测井仪 Thermal recovery of a logging tool with flow direction measurement function |
| 06/18/2014 | CN203655267U 长行程液力试压装置 Long stroke hydraulic pressure test device |
| 06/18/2014 | CN203655266U 随钻封隔煤岩裂隙注水测试装置 Coal and rock drilling crack injection packer testing device |
| 06/18/2014 | CN203655265U 用于煤矿突出预测的深钻孔瓦斯涌出初速度测定仪 Deep drilling for coal mine gas outburst prediction of the initial velocity emission analyzer |
| 06/18/2014 | CN203655264U 油水井阴极保护监测装置 Oil wells cathodic protection monitoring devices |
| 06/18/2014 | CN203655210U 一种含水层水头监测用封孔器及监测仪 An aqueous layer head with a sealing device and monitor Monitor |
| 06/18/2014 | CN103867199A Weathered crust recognition device |
| 06/18/2014 | CN103867197A Complex lithology natural gas reservoir interval transit time discriminating method |
| 06/18/2014 | CN103867196A Method for recognizing petrographic rhythm change in siltstone and mudstone alternate stratum through imaging logging image |
| 06/18/2014 | CN103867192A Hole depth measuring method based on sound waves in drilling process |
| 06/18/2014 | CN103867191A Anti-wear insulation pipe nipple for electromagnetic wave measurement while drilling |
| 06/18/2014 | CN103867190A Signal transmission device for coal-bed gas well detected signals |
| 06/18/2014 | CN103867189A Distributed type well-temperature measuring device and measuring method |
| 06/18/2014 | CN103867188A Decision method used for profile control of oil-field water injection well |
| 06/18/2014 | CN103867187A Oil well indicator diagram liquid level collecting device |
| 06/18/2014 | CN103867186A Method and Apparatus for Analyzing Image Data Generated During Underground Boring or Inspection Activities |
| 06/18/2014 | CN103867185A Gas and liquid two-phase-element flow meter special for pumping unit |
| 06/18/2014 | CN103867184A Gas well critical liquid carrying flow rate determining method and device |
| 06/18/2014 | CN103867183A Transient electromagnetic method through casing water exploration tester |
| 06/18/2014 | CN103867182A Water flow metering device applied to coalbed methane drainage |
| 06/18/2014 | CN102943668B Underground drilling-following acoustic signal transmission device |
| 06/18/2014 | CN102681015B Method for dividing stratum structures of mining area |
| 06/18/2014 | CN102536196B System and method for underground attitude measurement based on laser ranging and acceleration measurement |
| 06/18/2014 | CN102330548B Method for obtaining NMR (nuclear magnetic resonance) echo strings for ringing elimination |
| 06/18/2014 | CN101761329B Waterproof sealing structure of mine electronic instrument |
| 06/18/2014 | CN101408101B Wellbore telemetry system and method |
| 06/18/2014 | CA2813145A1 System and method for positioning equipment for well logging |
| 06/17/2014 | US8756019 Method for estimation of SAGD process characteristics |
| 06/17/2014 | US8754648 Boring tool locating signal frequency tracking apparatus |
| 06/17/2014 | US8752622 Downhole tool for investigating perforations |
| 06/17/2014 | US8752620 Systems and methods for single-phase fluid sampling |
| 06/17/2014 | US8752305 Apparatus and method for determining the direction east |
| 06/17/2014 | CA2583290C System and method for wireless communication in a producing well system |
| 06/17/2014 | CA2572703C Intervention rod |
| 06/12/2014 | WO2014089505A1 Gradient-based single well sagd ranging system |
| 06/12/2014 | WO2014089490A1 Drilling parallel wells for sagd and relief |
| 06/12/2014 | WO2014089430A1 Systems and methods for cable deployment of downhole equipment |
| 06/12/2014 | WO2014089228A2 Water treatment process for high salinity produced water |
| 06/12/2014 | WO2014089128A1 Downhole tool cooling system and method |
| 06/12/2014 | WO2014088786A1 Calibration of a well acoustic sensing system |
| 06/12/2014 | WO2014088735A1 Strain sensing cable |
| 06/12/2014 | WO2014088545A1 Extendable orienting tool for use in wells |
| 06/12/2014 | WO2014085936A1 Method and apparatus for multi-channel downhole electromagnetic telemetry |
| 06/12/2014 | WO2014085935A1 Back up directional and inclination sensors and method of operating same |
| 06/12/2014 | WO2014085925A1 Axially-supported downhole probes |
| 06/12/2014 | WO2014085898A1 Methods and apparatus for downhole probes |
| 06/12/2014 | WO2014085894A1 Downhole probe centralizer |
| 06/12/2014 | WO2014085893A1 Mounting and component holder apparatuses and assemblies for holding rigid components |
| 06/12/2014 | WO2014015404A8 Methods and systems for analyses used in petroleum wells |
| 06/12/2014 | US20140163889 Method of acoustic surveying |
| 06/12/2014 | US20140163887 Cross-coupling based determination of anisotropic formation properties |
| 06/12/2014 | US20140160891 Drillstring combination pressure reducing and signaling valve |
| 06/12/2014 | US20140159730 Tracking positions of personnel, vehicles, and inanimate objects |
| 06/12/2014 | US20140158430 Drilling tool, apparatus and method for underreaming and simultaneously monitoring and controlling wellbore diameter |
| 06/12/2014 | US20140158351 Apparatus and Method for Determining Orientation of a Device and Mill Position in a Wellbore Utilizing Identification Tags |
| 06/12/2014 | US20140158347 Methods and apparatus for sensing in wellbores |
| 06/12/2014 | US20140158345 Dual-pump formation fracturing |
| 06/12/2014 | US20140157884 Methods and Apparatus for Determining Downhole Parameters |
| 06/12/2014 | US20140157882 Distributed temperature sensing with background filtering |
| 06/12/2014 | US20140157860 Method and arrangement for calibrating sensors in drilling equipment |
| 06/11/2014 | EP2740893A2 Toolstring Communication in Cable Telemetry |
| 06/11/2014 | EP2740892A2 Failure point diagnostics in cable telemetry |
| 06/11/2014 | EP2740891A2 Toolstring topology mapping in cable telemetry |
| 06/11/2014 | EP2740890A1 Cooling system and method for a downhole tool |
| 06/11/2014 | EP2740889A1 Downhole tool cooling system and method |
| 06/11/2014 | EP2740883A1 Tool for locating and plugging lateral wellbores |
| 06/11/2014 | EP2739822A2 Self-tightening clamps to secure tools along the exterior diameter of a tubing |
| 06/11/2014 | EP2739821A2 Methods for monitoring and modifying a fluid stream using opticoanalytical devices |
| 06/11/2014 | EP2739814A1 Methods for monitoring fluids within or produced from a subterranean formation using opticoanalytical devices |
| 06/11/2014 | EP2739700A2 Methods for monitoring the formation and transport of an acidizing fluid using opticoanalytical devices |
| 06/11/2014 | CN203640729U 一种瞬变电磁测井探头检测系统 One kind of transient electromagnetic logging probe detection system |
| 06/11/2014 | CN203640727U 一种瞬变电磁测井仪器 One kind of transient electromagnetic logging equipment |
| 06/11/2014 | CN203640726U 一种瞬变电磁发射探头 One kind of transient electromagnetic launch probe |
| 06/11/2014 | CN203640725U 一种人工举升井下实时监测装置 An artificial lift downhole monitoring devices in real time |
| 06/11/2014 | CN203640724U 电阻率测量工具 Resistivity measurement tool |
| 06/11/2014 | CN203640723U 一种水井压力检测智能手表装置 One kind of smart watches wells pressure detection device |
| 06/11/2014 | CN203640722U 井筒内液柱压力监测仪 Wellbore fluid column pressure monitor |
| 06/11/2014 | CN203640721U 探测具体水位的探水系统 Specific probe to detect water level water systems |
| 06/11/2014 | CN203640720U 随钻测斜仪 MWD inclinometer |
| 06/11/2014 | CN203640719U 测试仪器的固定装置和井下测试设备 Fixture test equipment and downhole test equipment |
| 06/11/2014 | CN203640718U 孔中雷达无水护壁装置 Aperture radar device anhydrous Wall |