| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
|---|
| 10/25/2012 | US20120267519 Ruggedized high temperature compatible radiation detector |
| 10/25/2012 | US20120267169 Apparatus and Method for Tool Face Control Using Pressure Data |
| 10/25/2012 | US20120267097 Multi-step solvent extraction process for heavy oil reservoirs |
| 10/24/2012 | EP2514917A1 Method for geological storage of gas by geochemical analysis of noble gases in gas phase |
| 10/24/2012 | EP2514916A2 Apparatus and method for monitoring geotechnical and structural parameters of soils, rocks and structures in general, in holes having different inclinations or on surfaces having different spatial orientations |
| 10/24/2012 | EP2514915A1 Downhole time-domain pulsed electromagnetic method for detecting resistivity of stratum outside metal cased pipe |
| 10/24/2012 | EP2513674A2 Workflow for petrophysical and geophysical formation evaluation of wireline and lwd log data |
| 10/24/2012 | EP2513422A2 Methods for characterization of formations, navigating drill paths, and placing wells in earth boreholes |
| 10/24/2012 | EP2513404A2 Drilling assembly with a steering unit integrated in drilling motor |
| 10/24/2012 | CN202500556U Detection apparatus of mud positive pulse generator |
| 10/24/2012 | CN202500555U Data transmission system in petroleum logger |
| 10/24/2012 | CN202500554U Ground test trolley of long distance needle threading tool |
| 10/24/2012 | CN202500553U Device for monitoring pressure and temperature in layered water injection |
| 10/24/2012 | CN202500552U Underground engineering parameter measurement-while-drilling device |
| 10/24/2012 | CN202500551U Hole detector for underwater filling pile |
| 10/24/2012 | CN202500550U Electronic multishot inclinometer for coal mine |
| 10/24/2012 | CN202500549U Underground optical imager |
| 10/24/2012 | CN202500548U Floating probe device for detecting wellhead flaw of drill tool |
| 10/24/2012 | CN202500547U Respondence checking device of electromagnetic wave resistivity well logger during drilling |
| 10/24/2012 | CN202500546U Non-inductive test box |
| 10/24/2012 | CN202500545U Detection device of approach switch sensor |
| 10/24/2012 | CN202500544U Rotary driving device for oilfield well eccentric test |
| 10/24/2012 | CN202499674U Double-roller linkage numerical control winch |
| 10/24/2012 | CN102753783A Automatic modular maintenance device operating in the annulus of a well for the production of hydrocarbons |
| 10/24/2012 | CN102748013A Low-frequency dipole transmitting transducer |
| 10/24/2012 | CN102748012A Underground wireless communication data receiving and transmitting nipple |
| 10/24/2012 | CN102748011A Audio monitoring terminal and audio processing method applied to industrial monitoring equipment |
| 10/24/2012 | CN102748010A System and method for measuring postures as well as system and method for measuring wellbore track of oil well |
| 10/24/2012 | CN102748009A High-temperature-resistant protective sleeve for probe tube, and manufacturing and application methods thereof |
| 10/24/2012 | CN102748008A Detecting device capable of realizing drill hole three-dimensional imaging and method thereof |
| 10/24/2012 | CN102748007A Well testing analytical method and device |
| 10/24/2012 | CN102748006A Remote monitoring system of downhole operation |
| 10/24/2012 | CN102748005A System for monitoring temperature, stress and deformation of frozen wall of shaft in real time and laying method thereof |
| 10/24/2012 | CN102748004A Method for determining hydrocarbon saturation of gas logging |
| 10/24/2012 | CN102748001A Hydraulic sand-blasting, perforating, sand-filling, layering and fracturing technology for continuous oil pipe |
| 10/24/2012 | CN102747994A Liquid passing type electric-control layered polymer filling device |
| 10/24/2012 | CN102747991A Method for determining single-layer output of commingled producing well |
| 10/24/2012 | CN102747972A Cable following type releasing method |
| 10/24/2012 | CN102747967A Multi-stage segmented release water exploration pipe column and method for casing well completion multi-stage fractured horizontal well |
| 10/24/2012 | CN102071962B Method for sealing downward hole |
| 10/24/2012 | CN101886540B Lateral multi-lens composite imaging video well-logging device |
| 10/24/2012 | CN101713287B Magnetic short section used for measuring distance between adjacent wells by electromagnetic detection while drilling |
| 10/24/2012 | CN101446193B Device and method for detecting coal seam gas pressure and coal wall stress |
| 10/24/2012 | CN101365858B Formation component and method for reducing the borehole gap for downhole formation testing sensors |
| 10/23/2012 | US8296113 Virtual steering of induction tool attenuation and phase difference measurements |
| 10/23/2012 | US8292005 Device and method for measuring a property in a downhole apparatus |
| 10/23/2012 | US8291975 Use of micro-electro-mechanical systems (MEMS) in well treatments |
| 10/23/2012 | US8291974 Method and system for accessing subterranean deposits from the surface and tools therefor |
| 10/23/2012 | CA2689825C Core orientation device |
| 10/23/2012 | CA2523092C Systems and methods using a continuously variable transmission to control one or more system components |
| 10/18/2012 | WO2012142566A1 Variable tool calibration |
| 10/18/2012 | WO2012141843A2 High temperature piezoresistive strain gauges made of silicon-on-insulator |
| 10/18/2012 | WO2012141837A2 Apparatus and method for testing solids production in a wellbore |
| 10/18/2012 | WO2012141685A1 Opening a conduit cemented in a well |
| 10/18/2012 | WO2012141683A1 Electrical contacts to a ring transducer |
| 10/18/2012 | WO2012141681A1 Method for pressure compensatng a transducer |
| 10/18/2012 | WO2012140092A1 Device for measuring and controlling on-line viscosity at high pressure |
| 10/18/2012 | WO2012116204A3 Integrated reaming and measurement system and related methods of use |
| 10/18/2012 | WO2012109247A9 High voltage insulating sleeve for nuclear well logging |
| 10/18/2012 | WO2012106017A3 Apparatus and methods for tracking the location of fracturing fluid in a subterranean formation |
| 10/18/2012 | WO2011150251A8 Assembly and method for multi-zone fracture stimulation of a reservoir using autonomous tubular units |
| 10/18/2012 | US20120264660 Method of Tracking Fluids Produced from Various Zones in Subterranean Well |
| 10/18/2012 | US20120263243 System for communicating over a power cable |
| 10/18/2012 | US20120261191 Determining methane content of a bottom sample |
| 10/18/2012 | DE102011103220B3 Doppelrohrgestängeschuss mit einer im Doppelrohrgestängeschuss angeordneten Sonde, ein Horizontalbohrgerät und ein Sondengehäuse Double tubing string shot with a arranged in a double shot of drill pipe probe, horizontal drilling and a probe housing |
| 10/18/2012 | CA2833261A1 Variable tool calibration |
| 10/18/2012 | CA2832548A1 Electrical contacts to a ring transducer |
| 10/18/2012 | CA2831862A1 Device for measuring and controlling on-line viscosity at high pressure |
| 10/18/2012 | CA2831251A1 Systems and methods for hydraulic fracture characterization using microseismic event data |
| 10/18/2012 | CA2830927A1 Opening a conduit cemented in a well |
| 10/17/2012 | EP2511468A1 A method and apparatus for communicating with a device located in a borehole |
| 10/17/2012 | EP2510387A2 Bend insensitive optical fiber with improved hydrogen resistance |
| 10/17/2012 | EP2510344A2 Electro-chemical sensor |
| 10/17/2012 | EP2510190A2 Wirelessly actuated hydrostatic set module |
| 10/17/2012 | EP2510189A1 Optical sensor having a capillary tube and an optical fiber in the capillary tube |
| 10/17/2012 | CN202493262U Split type electromagnetic wave wireless MWD (Measurement While Drilling) device for coal mine |
| 10/17/2012 | CN202493261U Lead assembly of electromagnetic wave wireless measurement while drilling device |
| 10/17/2012 | CN202493260U Integral electromagnetic valve wireless measurement while drilling device for coal mine |
| 10/17/2012 | CN202493259U Connecting device of underground liquid level monitor |
| 10/17/2012 | CN202493258U Emission sub of electromagnetic wave wireless measurement while drilling (MWD) device for coal mine |
| 10/17/2012 | CN202493257U Rolling type detecting device |
| 10/17/2012 | CN202493256U Managed pressure drilling data acquisition and monitoring device |
| 10/17/2012 | CN202493255U Novel energy spectrum logger crystal installation structure |
| 10/17/2012 | CN202493254U Magnetic control lock combined mechanism for wheel brake of electric bicycle |
| 10/17/2012 | CN202493253U Portable adjustment device of comprehensive logging sensor |
| 10/17/2012 | CN202493252U Current-collecting capacitive composite sensor of specific retention and flow rate |
| 10/17/2012 | CN202493251U Umbrella-opening aiding device for horizontal well logging |
| 10/17/2012 | CN202493220U Drilling tool joint for connecting down-well liquid level monitoring instrument |
| 10/17/2012 | CN202493218U Electronic joint of vertical well drilling system |
| 10/17/2012 | CN102741504A System for analysing gas from strata being drilled under high mud flows |
| 10/17/2012 | CN102741503A Apparatus for measuring bending on a drill bit operating in a well |
| 10/17/2012 | CN102733801A Hot-pressing simulation experimental facility for whole process of rock formation, hydrocarbon generation and hydrocarbon discharge |
| 10/17/2012 | CN102733799A Well drilling information acoustic wave transmission relay device based on drilling string information channel |
| 10/17/2012 | CN102733798A Underground ropeless testing system for oil well |
| 10/17/2012 | CN102733797A Safe pulling-out indicator |
| 10/17/2012 | CN102733796A Nitrogen gas pressure detection device |
| 10/17/2012 | CN102733795A Omnidirectional bending small-diameter flexible joint |
| 10/17/2012 | CN102733794A Method for exploring sand surfaces by trying to squeeze sand compartments |
| 10/17/2012 | CN102733793A Real-time monitoring system for hole bottom parameters in deep hole drilling |
| 10/17/2012 | CN102733792A Monitoring the phase composition of production fluid from a hydrocarbon extraction well |