| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
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| 02/09/2012 | US20120034103 Method and apparatus for monitoring of esp |
| 02/09/2012 | US20120031681 Downhole tool housing |
| 02/09/2012 | US20120031670 Apparatus and Methods for Real Time Communication Between Drill Bit and Drilling Assembly |
| 02/09/2012 | US20120031669 Memory Logging Drill Bit With Connectable Pulser |
| 02/09/2012 | US20120031613 Methods and compositions for determination of fracture geometry in subterranean formations |
| 02/09/2012 | US20120031610 Fluid Resistivity Measurement Tool |
| 02/09/2012 | CA2807155A1 Apparatus and methods for real time communication in drill strings |
| 02/09/2012 | CA2807154A1 Apparatus and methods for real time communication between drill bit and drilling assembly |
| 02/09/2012 | CA2807148A1 Tagged scale inhibitor compositions and methods of inhibiting scale |
| 02/08/2012 | EP2415959A2 Marine composite riser for structural health monitoring using piezoelectricity |
| 02/08/2012 | EP2414629A1 Two coil guidance system for tracking boreholes |
| 02/08/2012 | EP2414628A1 Active in-situ controlled permanent downhole device |
| 02/08/2012 | EP2414616A2 A rig for wellbore operations |
| 02/08/2012 | EP2313797B1 Control of sub surface safety valves |
| 02/08/2012 | EP1803001B1 Method for hydrocarbon reservoir monitoring |
| 02/08/2012 | CN202140558U 一种密封套固定结构 A sealing sleeve fixed structure |
| 02/08/2012 | CN202140084U 一种钻柱振动信号采集装置 One kind of drill string vibration signal acquisition device |
| 02/08/2012 | CN202140083U 双井温测漏测井仪 Leak shuangjing temperature logging tool |
| 02/08/2012 | CN202140082U 地热井自动水位监测系统 Geothermal wells automatic water level monitoring system |
| 02/08/2012 | CN202140081U 桩孔施工钻机钻孔倾斜度测量仪 Pile Construction tilt meter drilling rig |
| 02/08/2012 | CN202140080U Multifunctional metering tank |
| 02/08/2012 | CN202140078U 橇装化单井三相分离计量装置 Three-phase separator skid-mounted metering device of a single well |
| 02/08/2012 | CN202140070U 煤层气螺杆泵井监控系统 CBM wells screw Monitoring System |
| 02/08/2012 | CN1696473B 非导电液中钻探时的地层成像 Forming a non-conductive liquid formation during drilling |
| 02/08/2012 | CN102345455A System and method for determining an orientation of a device |
| 02/08/2012 | CN102344099A Well logging winch and braking device thereof |
| 02/08/2012 | CN101328786B 钻井自动灌浆控制方法及控制系统 Drilling automatic filling control method and control system |
| 02/08/2012 | CN101289935B 一种近钻头地质导向探测系统 A near-bit Geosteering detection system |
| 02/08/2012 | CN101220742B 一种油井固相介质中声波调制传输及解析设备 One kind of solid-phase medium sonic well modulated transmission and analytical equipment |
| 02/07/2012 | US8111170 Remote area sensor system |
| 02/07/2012 | US8109334 Sampling and evaluation of subterranean formation fluid |
| 02/07/2012 | US8109333 Indicator and method |
| 02/07/2012 | US8109332 Method of optimizing production of a well |
| 02/07/2012 | US8109329 Split-coil, redundant annular coupler for wired downhole telemetry |
| 02/07/2012 | US8109155 Methods and apparatus to measure fluid flow rates |
| 02/02/2012 | WO2012016117A1 Systems and methods for downhole instrument communication via power cable |
| 02/02/2012 | WO2012016045A1 Monitoring of drilling operations with flow and density measurement |
| 02/02/2012 | WO2012015894A1 "system and method for directional drilling" |
| 02/02/2012 | WO2012014126A2 Frequency sweeping tubewave sources for liquid filled boreholes |
| 02/02/2012 | WO2012012839A1 Core sample orientation system, device and method |
| 02/02/2012 | WO2011156798A3 Detecting and mitigating borehole diameter enlargement |
| 02/02/2012 | WO2011156219A3 Method of determining position of a valve |
| 02/02/2012 | WO2011149613A3 Detection of seismic signals using fiber optic distributed sensors |
| 02/02/2012 | WO2011127331A3 Methods and apparatus for measuring technical parameters of equipment, tools and components via conformal electronics |
| 02/02/2012 | WO2011100966A3 Method and device for direction-controlled drilling |
| 02/02/2012 | US20120027630 Vibration method to detect onset of gas lock |
| 02/02/2012 | US20120026002 System and Method for Remote Well Monitoring |
| 02/02/2012 | US20120024524 Method for Monitoring Oil Field Development |
| 02/02/2012 | US20120024523 Tool and method for determining formation parameter |
| 02/02/2012 | US20120024052 downhole pressure and vibration measuring device integrated in a pipe section as a part of a production tubing |
| 02/02/2012 | US20120024050 Method And Apparatus For In-Situ Wellbore Measurements |
| 02/02/2012 | CA2806885A1 Core sample orientation system, device and method |
| 02/02/2012 | CA2806681A1 Monitoring of drilling operations with flow and density measurement |
| 02/02/2012 | CA2806569A1 Systems and methods for downhole instrument communication via power cable |
| 02/02/2012 | CA2806204A1 Frequency sweeping tubewave sources for liquid filled boreholes |
| 02/02/2012 | CA2747275A1 Method and apparatus for measuring formation anisotropy while drilling |
| 02/01/2012 | EP2412921A2 Apparatus and method for depth referencing downhole tubular strings |
| 02/01/2012 | EP2411628A2 Non-planar antennae for directional resistivity logging |
| 02/01/2012 | EP2411627A1 Device including an apparatus for measuring drilling or coring operation parameters, and equipment including such a device |
| 02/01/2012 | CN202132035U 油井井口试压装置 Wellhead pressure test device |
| 02/01/2012 | CN202132034U 钻井泥浆测压装置 Drilling mud pressure measurement device |
| 02/01/2012 | CN202132033U 耦合式油田防爆绞车传感器 Winch sensor coupled oilfield explosion |
| 02/01/2012 | CN202132032U 一种用于油井液位测量的自动气枪 An automatic air gun oil level measurement |
| 02/01/2012 | CN202132031U 一种用于石油测井仪的继电器控制电路 An oil well logging instrument relay control circuit |
| 02/01/2012 | CN202132030U 一种带承压的绝缘短节 A short section with a pressure of insulation |
| 02/01/2012 | CN202132029U 一种石油分层开采和测试系统 A petroleum exploration and tiered testing system |
| 02/01/2012 | CN102341563A Method for monitoring oil-field development |
| 02/01/2012 | CN102341562A Apparatus and method for wireless sensor to monitor barrier system integrity |
| 02/01/2012 | CN102337886A System of performing down-hole measurement on oil gas in slurry while drilling |
| 02/01/2012 | CN102337884A High-precision downhole electromagnetic thickness-measuring caliper |
| 02/01/2012 | CN102337883A Method for real-time tracking and measuring of drilling depth of measurement while drilling system |
| 02/01/2012 | CN102337882A Wireless while-drilling compound multipoint instrument |
| 02/01/2012 | CN102337881A Assembly method of inertial measurement component in continuous inclinometer |
| 02/01/2012 | CN102337880A Fluid flow sensor |
| 02/01/2012 | CN102337850A Titanium alloy blowout-prevention pipe |
| 02/01/2012 | CN101294491B 一种井下信息自适应传输方法和系统 A downhole adaptive transmission method and system information |
| 01/31/2012 | US8104535 Method of improving waterflood performance using barrier fractures and inflow control devices |
| 01/31/2012 | US8104338 Method and apparatus for ion-selective discrimination of fluids downhole |
| 01/31/2012 | US8104337 Christmas tree with internally positioned flowmeter |
| 01/31/2012 | CA2543909C High temperature electronic devices |
| 01/31/2012 | CA2503516C Method and system for circulating fluid in a well system |
| 01/27/2012 | CA2747497A1 Apparatus and method for depth referencing downhole tubular strings |
| 01/26/2012 | WO2012012637A2 Smart seals and other elastomer systems for health and pressure monitoring |
| 01/26/2012 | WO2012012587A2 Apparatus and method for enhancing subsurface surveys |
| 01/26/2012 | WO2012012449A2 System and method for reservoir characterization |
| 01/26/2012 | WO2012012098A1 Method for in situ fluid assessment and optimization during wellbore displacement operations |
| 01/26/2012 | WO2012012076A1 Continously adjusting resultant force in an excavating assembly |
| 01/26/2012 | WO2012011898A1 Method and system of determining a parameter associated with a formation corrected for neutrons produced |
| 01/26/2012 | WO2012011831A1 System and method for determination of desposits in multi-phase fluid flow |
| 01/26/2012 | WO2012010835A2 Monitoring of objects in conjunction with a subterranean well |
| 01/26/2012 | WO2012010821A2 Communication through an enclosure of a line |
| 01/26/2012 | WO2011146990A9 Sensor device for a down hole surveying tool |
| 01/26/2012 | WO2011077218A3 Automatic modular maintenance device operating in the annulus of a well for the production of hydrocarbons |
| 01/26/2012 | US20120020808 Wireless Monitoring of Pump Jack Sucker Rod Loading and Position |
| 01/26/2012 | US20120018230 Flasked Pressure Housing |
| 01/26/2012 | US20120018219 Method and steering assembly for drilling a borehole in an earth formation |
| 01/26/2012 | US20120018151 Inert gas injection to help control or extinguish coal fires |
| 01/26/2012 | US20120018149 Method of detecting fluid in-flows downhole |
| 01/26/2012 | US20120018148 Real-time field friction reduction meter and method of use |
| 01/26/2012 | US20120018147 Valve assembly employable with a downhole tool |