| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
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| 10/11/2007 | US20070235184 Method and apparatus for sensing a borehole characteristic |
| 10/11/2007 | US20070235181 Hydraulic Fracturing |
| 10/11/2007 | US20070234789 Fluid distribution determination and optimization with real time temperature measurement |
| 10/11/2007 | US20070234788 Tracking fluid displacement along wellbore using real time temperature measurements |
| 10/11/2007 | US20070234580 System and method for using rotation sensors within a borehole |
| 10/11/2007 | DE102007016821A1 Actuator, e.g. lifting pad, actuation, for use during e.g. earth drilling process, involves pressurizing actuator with medium, e.g. drilling fluid medium and washing medium, and adjusting actuator by potential energy of medium |
| 10/11/2007 | CA2718118A1 Telemetry transmitter optimization using time domain reflectometry |
| 10/11/2007 | CA2585044A1 Acoustic telemetry system optimization |
| 10/10/2007 | EP1841948A1 A method for facilitating a wellbore operation |
| 10/10/2007 | EP1676015A4 Make-up control system for tubulars |
| 10/10/2007 | EP1552274B1 Borehole conductivity profiler |
| 10/10/2007 | CN200958392Y Air-cushion dry hole soundwave tester |
| 10/10/2007 | CN200958391Y Underground optical-cable connector |
| 10/10/2007 | CN200958390Y Petroleum optical-fiber pressure monitor under well |
| 10/10/2007 | CN200958389Y Manograph of throttle pipe |
| 10/10/2007 | CN101050699A Method for obtaining thick oil layer vertical permeability using same layer vertical interference test well and test tubular pole |
| 10/10/2007 | CN101050698A Logging unit repair test system and test unit |
| 10/10/2007 | CN100342114C Single arm clamp piston of petroleum exploration device |
| 10/09/2007 | US7280432 Oscillating shear valve for mud pulse telemetry |
| 10/09/2007 | US7280214 Method and apparatus for a high resolution downhole spectrometer |
| 10/09/2007 | US7278496 Drilling system and method |
| 10/09/2007 | US7278480 Apparatus and method for sensing downhole parameters |
| 10/09/2007 | CA2413794C Inductively coupled method and apparatus of communicating with wellbore equipment |
| 10/09/2007 | CA2334334C Directional drilling system and apparatus |
| 10/04/2007 | WO2007112373A2 Method and system for calibrating a tube scanner |
| 10/04/2007 | WO2007112363A2 Methods and system for evaluating and displaying depth data |
| 10/04/2007 | WO2007112333A2 Method and system for interpreting tubing data |
| 10/04/2007 | WO2007112324A2 Method and system for scanning tubing |
| 10/04/2007 | WO2007112175A2 Hydraulic fracture initiation and propagation control in unconsolidated and weakly cemented sediments |
| 10/04/2007 | WO2007109860A1 Measurement of hydraulic conductivity using a radioactive or activatable tracer |
| 10/04/2007 | WO2007089338A3 Method and apparatus for fluid influx detection while drilling |
| 10/04/2007 | WO2007033001A3 Method and system for setting and analyzing tubing target pressures for tongs |
| 10/04/2007 | US20070227776 Borehole Telemetry System |
| 10/04/2007 | US20070227775 Shape memory alloy actuated steerable drilling tool |
| 10/04/2007 | US20070227728 Method and lightweight composition for sealing pipe and wellbores |
| 10/04/2007 | US20070227727 Completion System Having a Sand Control Assembly, An Inductive Coupler, and a Sensor Proximate to the Sand Control Assembly |
| 10/04/2007 | US20070227241 Downhole fluid characterization based on changes in acoustic properties with pressure |
| 10/04/2007 | US20070227225 Method and system for calibrating a tube scanner |
| 10/04/2007 | CA2647324A1 Hydraulic fracture initiation and propagation control in unconsolidated and weakly cemented sediments |
| 10/04/2007 | CA2644452A1 Measurement of hydraulic conductivity using a radioactive or activatable tracer |
| 10/03/2007 | EP1749143B1 Device for examining rotor drilled holes |
| 10/03/2007 | EP1613837B1 System for managing borehole information |
| 10/03/2007 | CN200955388Y Oil pipe delivery perforating frequency spectrum analysing monitoring instrument |
| 10/03/2007 | CN200955387Y Level directional drill working information collection device |
| 10/03/2007 | CN200955386Y Acoustically transparent of transducer |
| 10/03/2007 | CN200955385Y Level well-logging protector |
| 10/03/2007 | CN200955350Y Underwater pipeline perforating machine capable of controlling feeding depth |
| 10/03/2007 | CN200954989Y Logging hoist-engine tension overload protection system |
| 10/03/2007 | CA2581437A1 Method and system for calibrating downhole tools for drift |
| 10/02/2007 | US7277358 Apparatus, method and system for digitally transmitting acoustic pulse gun signals |
| 10/02/2007 | US7277025 Telescopic data coupler |
| 10/02/2007 | CA2448714C Apparatus and method for determining a drilling mode to optimize formation evaluation measurements |
| 10/02/2007 | CA2437103C Method and apparatus for determining downhole pressures during a drilling operation |
| 10/02/2007 | CA2348204C Method for iterative determination of conductivity in anisotropic dipping formations |
| 09/30/2007 | CA2582541A1 Completion system having a sand control assembly, an inductive coupler, and a sensor proximate to the sand control assembly |
| 09/30/2007 | CA2581522A1 System and method for calibration of well logging tools |
| 09/28/2007 | CA2583059A1 Method and system for calibrating a tube scanner |
| 09/28/2007 | CA2583056A1 Method and system for displaying scanning data for oil well tubing based on scanning speed |
| 09/27/2007 | WO2007109405A2 Method and system of controlling drilling direction using directionally sensitive resistivity readings |
| 09/27/2007 | WO2007108717A1 Well jet device for well-logging operations and the operating method thereof |
| 09/27/2007 | WO2007108716A1 Well jet device and the operating method thereof |
| 09/27/2007 | WO2007108700A1 Communication means for communication with and remote activation of downhole tools and devices used in association with wells for production of hydrocarbons |
| 09/27/2007 | WO2007107815A1 System and method for real-time monitoring and failure prediction of electrical submersible pumps |
| 09/27/2007 | WO2007107734A1 Acoustic telemetry |
| 09/27/2007 | WO2007016464A3 Acoustic fluid analyzer |
| 09/27/2007 | US20070221407 Permanent downhole deployment of optical sensors |
| 09/27/2007 | US20070221375 Control method for downhole steering tool |
| 09/27/2007 | US20070221372 Packer |
| 09/27/2007 | CA2645271A1 Communication means for communication with and remote activation of downhole tools and devices used in association with wells for production of hydrocarbons |
| 09/27/2007 | CA2643517A1 Acoustic telemetry |
| 09/27/2007 | CA2583064A1 Method and system for evaluating and displaying depth data |
| 09/27/2007 | CA2582795A1 Method and system for interpreting tubing data |
| 09/27/2007 | CA2582635A1 Method and system for scanning tubing |
| 09/26/2007 | EP1836644A2 Multiscale multidimensional well log data inversion and deep formation imaging method |
| 09/26/2007 | CN200952391Y Releasable bridle |
| 09/26/2007 | CN200952390Y Pressure stabilizer for perforating effect detection |
| 09/26/2007 | CN200952381Y Charging self-releasing ball seak |
| 09/26/2007 | CN101044417A Method for hydrocarbon reservoir monitoring |
| 09/26/2007 | CN101042437A Seismic prospecting method between azimuth borehole |
| 09/26/2007 | CN101042047A Oil filling method of LWD impulsator |
| 09/26/2007 | CN101042046A Cased well orientation acoustic logging method |
| 09/26/2007 | CN100339726C Method and apparatus for testing fluid speed and characters using NMR |
| 09/26/2007 | CN100339725C Apparatus and methods for reducing borehole current effects |
| 09/25/2007 | US7274989 Borehole equipment position detection system |
| 09/25/2007 | US7273105 Monitoring of a reservoir |
| 09/25/2007 | US7273102 Remotely actuating a casing conveyed tool |
| 09/25/2007 | US7273097 Formation characterization using wellbore logging data |
| 09/25/2007 | US7273096 Gel release device |
| 09/25/2007 | CA2394950C Three dimensional steerable system |
| 09/25/2007 | CA2394867C Method for magnetizing wellbore tubular |
| 09/25/2007 | CA2291922C Rotary steerable well drilling system utilizing sliding sleeve |
| 09/24/2007 | CA2581258A1 Method for identification of inhibited wells in the mature fields |
| 09/20/2007 | WO2007105167A2 Method and apparatus for hydraulic fracturing and monitoring |
| 09/20/2007 | WO2006012731A3 Integrated magnetic ranging tool |
| 09/20/2007 | US20070216417 Apparatus and Method For Resistivity Measurements During Rotational Drilling |
| 09/20/2007 | US20070216415 Retrievable Formation Resistivity Tool |
| 09/20/2007 | US20070215613 Extracting And Processing Hydrocarbon-Bearing Formations |
| 09/20/2007 | US20070215384 Drilling apparatus and method |
| 09/20/2007 | US20070215349 Downhole Formation Testing Tool |
| 09/20/2007 | US20070215346 Viscosity control and filtration of well fluids |