| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
|---|
| 02/15/2011 | CA2548529C Magnetometers for measurement-while-drilling applications |
| 02/15/2011 | CA2513533C Radially adjustable downhhole devices & methods for same |
| 02/15/2011 | CA2463354C Intelligent efficient servo-actuator with sensor for a downhole pulser |
| 02/12/2011 | CA2711397A1 Virtual reservoir sensor |
| 02/10/2011 | WO2011017419A2 Systems and methods for monitoring corrosion in a well |
| 02/10/2011 | WO2011017417A2 Systems and methods for monitoring a well |
| 02/10/2011 | WO2011017416A2 Systems and methods for monitoring a well |
| 02/10/2011 | WO2011017415A2 Systems and methods for monitoring cement quality in a well |
| 02/10/2011 | WO2011017413A2 Use of fiber optics to monitor cement quality |
| 02/10/2011 | WO2011017289A2 Apparatus and method for quality assessment of downhole data |
| 02/10/2011 | WO2011017280A1 Riser segment rfid tag mounting system and method |
| 02/10/2011 | WO2011017278A1 Arc rfid antenna |
| 02/10/2011 | WO2011016810A1 Piping communication |
| 02/10/2011 | WO2011015824A2 Collision avoidance system with offset wellbore vibration analysis |
| 02/10/2011 | WO2010086588A3 Sensing inside and outside tubing |
| 02/10/2011 | US20110035154 Utilizing salts for carbon capture and storage |
| 02/10/2011 | US20110035152 Autonomous wellbore navigation device |
| 02/10/2011 | US20110031018 Horizontal drilling system |
| 02/10/2011 | US20110031017 Abrasion detecting apparatus detecting abrasion of component of cutter head and tunnel boring machine including abrasion detecting apparatus |
| 02/10/2011 | US20110031016 Collision avoidance system with offset wellbore vibration analysis |
| 02/10/2011 | US20110031015 System and method for managing and/or using data for tools in a wellbore |
| 02/10/2011 | US20110030947 Stimulating subterranean zones |
| 02/10/2011 | US20110030945 Centralizer apparatus |
| 02/10/2011 | US20110030467 Real-time completion monitoring with acoustic waves |
| 02/10/2011 | US20110030465 Geochemical surveillance of gas production from tight gas fields |
| 02/10/2011 | CA2770297A1 Systems and methods for monitoring corrosion in a well |
| 02/10/2011 | CA2770296A1 Systems and methods for monitoring a well |
| 02/10/2011 | CA2770293A1 Systems and methods for monitoring a well |
| 02/09/2011 | EP2282005A2 Subsea electronic modules |
| 02/09/2011 | CN201738920U Framework positioning structure of FDT modular formation tester |
| 02/09/2011 | CN201738918U Self-centering type main control valve rod coupling structure |
| 02/09/2011 | CN201738917U Drill-attached inclinometer falling preventing device |
| 02/09/2011 | CN201738916U Miniature communication logging instrument |
| 02/09/2011 | CN201738915U Sealing and suppressing device of well sealing device for oil field |
| 02/09/2011 | CN201738914U Down-hole electronic intelligent shut-off device |
| 02/09/2011 | CN201738913U Control circuit used in nuclear magnetic resonance logging |
| 02/09/2011 | CN201738897U Pressure and output self-adaptive measuring and controlling system of electric pump production well |
| 02/09/2011 | CN201738890U Oil pumping unit with data acquisition function |
| 02/09/2011 | CN201738857U Holding type fisher for jammed sandstone-type uranium deposit logging probes |
| 02/09/2011 | CN201738294U Wireless portable movable testing platform for parameters of geotechnical engineering |
| 02/09/2011 | CN101967971A Ternary fluid non-separation on-line measurement instrument |
| 02/09/2011 | CN101967969A High-resolution water cut meter based on distributary method |
| 02/09/2011 | CN101967968A Three-cavity pressure separation device in high-temperature high-pressure container |
| 02/09/2011 | CN101967963A Formation coring apparatus and methods |
| 02/09/2011 | CN101519960B Method for correcting depth trace of self-adapting well drilling |
| 02/08/2011 | US7884951 Apparatus for measuring an internal dimension of a well bore |
| 02/08/2011 | US7884736 Common interface architecture for horizontal directional drilling machines and walk-over guidance systems |
| 02/08/2011 | US7882902 Top drive interlock |
| 02/08/2011 | US7882892 Well having inductively coupled power and signal transmission |
| 02/08/2011 | CA2644216C Apparatus and method for protecting devices, especially fibre optic devices, in hostile environments |
| 02/08/2011 | CA2602216C Wireless communications in a drilling operations environment |
| 02/08/2011 | CA2601323C Drilling system comprising a plurality of borehole telemetry systems |
| 02/08/2011 | CA2508182C Wellbore evaluation system and method |
| 02/08/2011 | CA2464991C A method and apparatus for transmitting information between a salt-cavern and the surface of the ground |
| 02/03/2011 | WO2011014877A2 Three phase electrical wet connector for a downhole tool |
| 02/03/2011 | WO2011014815A1 Apparatus for measuring bending on a drill bit operating in a well |
| 02/03/2011 | WO2011014761A2 Telemetry coding and surface detection for a mud pulser |
| 02/03/2011 | WO2011014538A2 Gamma ray detectors having azimuthal sensitivity |
| 02/03/2011 | WO2011014389A2 Exploitation of sea floor rig structures to enhance measurement while drilling telemetry data |
| 02/03/2011 | WO2011012902A1 Improvements in or relating to cooling |
| 02/03/2011 | WO2011012838A2 Measurement apparatus |
| 02/03/2011 | WO2011012406A1 Device and method for the spatially-resolved recording of ground motion |
| 02/03/2011 | WO2010141407A3 Borehole compensated resistivity logging tool having an asymmetric antenna spacing |
| 02/03/2011 | WO2010137986A3 Method and system for transferring signals through a drill pipe system |
| 02/03/2011 | WO2010136768A3 Well monitoring by means of distributed sensing means |
| 02/03/2011 | WO2010129297A3 Measuring the phase of received signals |
| 02/03/2011 | WO2010096653A4 Multi-station analysis of magnetic surveys |
| 02/03/2011 | US20110024192 Method and apparatus for collecting drill bit performance data |
| 02/03/2011 | US20110024191 Apparatus and methods for guiding toolface orientation |
| 02/03/2011 | US20110024190 Method and apparatus for transmitting sensor response data and power through a mud motor |
| 02/03/2011 | US20110024189 Well drilling methods with event detection |
| 02/03/2011 | US20110024188 Apparatus for measuring bending on a drill bit operating in a well |
| 02/03/2011 | US20110024130 Plunger lift with chemical injection |
| 02/03/2011 | US20110024126 Method for producing hydrocarbons through a well or well cluster of which the trajectory is optimized by a trajectory optimisation algorithm |
| 02/03/2011 | US20110024109 Simultaneous Drilling and Open Hole Wireline Logging for Drilling Rigs |
| 02/03/2011 | US20110024108 Mineral Extraction System Having Multi-Barrier Lock Screw |
| 02/03/2011 | US20110024103 Method and apparatus for providing a conductor in a tubular |
| 02/03/2011 | US20110023595 Compact fluid disposal system and method for surface well testing |
| 02/03/2011 | CA2769647A1 Apparatus for measuring bending on a drill bit operating in a well |
| 02/03/2011 | CA2769357A1 Telemetry coding and surface detection for a mud pulser |
| 02/03/2011 | CA2769171A1 Measurement apparatus |
| 02/03/2011 | CA2768605A1 Improvements in or relating to cooling |
| 02/02/2011 | EP2280146A1 Sonde housing and method of manufacture |
| 02/02/2011 | EP2279330A1 Tool and method for determining formation parameter |
| 02/02/2011 | EP2279328A2 Method for determining wellbore position using seismic sources and seismic receivers |
| 02/02/2011 | EP2279325A2 Drilling system with drill string valves |
| 02/02/2011 | CN201732283U Network-transmission imaging logging ground system |
| 02/02/2011 | CN201730611U Downhole tool depth positioner |
| 02/02/2011 | CN201730610U Four-bar mechanism of clamp piston |
| 02/02/2011 | CN201730609U Dynamic test guider used for mechanical water-plugging pump well |
| 02/02/2011 | CN201730608U Comprehensive logging instrument for underground layered string inspection |
| 02/02/2011 | CN201730605U 节流管汇 Choke manifold |
| 02/02/2011 | CN201730604U Spiral passive gas-liquid separator |
| 02/02/2011 | CN201730573U Direct drive type screw pump well eccentric testing head |
| 02/02/2011 | CN201730571U Integrated installation and pressure test tool |
| 02/02/2011 | CN201730556U Explosion-proof testing collar |
| 02/02/2011 | CN101964761A Real-time data acquisition transmission instrument aiming at comprehensive logging instrument |
| 02/02/2011 | CN101963056A Method for predicting carbonate formation pore pressure by using log information |
| 02/02/2011 | CN101963055A Method for measuring multi-phase flow |
| 02/02/2011 | CN101963054A Underground synchronous developing and imaging device and use method thereof |