Patents for E21B 47 - Survey of boreholes or wells (31,352) |
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11/15/2006 | CN2837509Y Horizontal well logging cable protector |
11/15/2006 | CN1863986A Multimode acoustic imaging in cased wells |
11/15/2006 | CN1861982A Gravity cable winding float-type water gage |
11/15/2006 | CN1861981A Apparatus and method for sensing downhole parameters. |
11/14/2006 | US7136795 Control method for use with a steerable drilling system |
11/14/2006 | US7134514 Dual wall drill string assembly |
11/14/2006 | US7134512 Method of downhole drilling and apparatus therefor |
11/14/2006 | US7134500 Formation fluid characterization using flowline viscosity and density data an oil-based mud environment |
11/14/2006 | US7134493 Logging system for use in a wellbore |
11/14/2006 | US7134492 Mapping fracture dimensions |
11/14/2006 | US7134491 Leak remedy through sealants in local reservoirs |
11/14/2006 | CA2349223C Method and apparatus for connecting a lateral branch liner to a main well bore |
11/14/2006 | CA2209423C Apparatus and method for transmitting information using electromagnetic waves |
11/13/2006 | CA2545984A1 Filtering and boosting a signal from a drive circuit |
11/12/2006 | CA2546398A1 Apparatus and method for measuring while drilling |
11/09/2006 | WO2006119294A1 Methods and systems for determining angular orientation of a drill string |
11/09/2006 | WO2006118098A1 Semiconductor device and its manufacturing method, semiconductor manufacturing mask, and optical proximity processing method |
11/09/2006 | US20060250274 Systems and methods for acquiring data in thermal recovery oil wells |
11/09/2006 | US20060249307 Apparatus and method for mechanical caliper measurements during drilling and logging-while-drilling operations |
11/09/2006 | US20060249288 Identifying zones of origin of annular gas pressure |
11/09/2006 | US20060248949 Multi-purpose downhole tool |
11/09/2006 | US20060248735 Determination of borehole azimuth and the azimuthal dependence of borehole parameters |
11/09/2006 | CA2606428A1 Rotary steerable motor system for underground drilling |
11/08/2006 | EP1718995A2 Distributed downhole drilling network |
11/08/2006 | EP1718841A1 Annular pressure relief collar |
11/08/2006 | EP1604096B1 Method for determining a position of an object |
11/08/2006 | EP1549820B1 Apparatus and method for transmitting a signal in a wellbore |
11/08/2006 | EP1287230B1 Method and system for performing operations and for improving production in wells |
11/08/2006 | CN2835552Y Ultrasonic automatic monitoring apparatus for mixed phase oil, water and gas in oil well |
11/08/2006 | CN1283896C Method and apparatus for determining oil-layer characteristic |
11/08/2006 | CN1283895C Method and apparatus for locating indexing systems in cased well and conducting multilateral branch operations |
11/08/2006 | CN1283892C Electrical transmission system for multilateral well |
11/07/2006 | US7133325 Apparatus and method for generating electrical power in a borehole |
11/07/2006 | US7132958 Downhole telemetry system using multiple uplink modes as data channels using discrete multi-tone modulation |
11/07/2006 | US7131210 Borehole caliper tool |
11/07/2006 | CA2394071C Virtual sensors to provide expanded downhole instrumentation for electrical submersible pumps (esps) |
11/07/2006 | CA2379451C Method and system for performing operations and for improving production in wells |
11/06/2006 | CA2545738A1 Wellbore communication system and method |
11/02/2006 | WO2006115945A1 Low temperature monitoring system for subsurface barriers |
11/02/2006 | WO2006114410A1 U-shaped fiber optical cable assembly for use in a heated well and methods for installing and using the assembly |
11/02/2006 | WO2006114208A1 A method for electromagnetically measuring physical parameters of a pipe |
11/02/2006 | WO2006093492A3 A method for direct permeability logging of a subterranean formation |
11/02/2006 | WO2005124397B1 Apparatus and methods for self-powered communication and sensor network |
11/02/2006 | US20060245469 Subsea and landing string distributed temperature sensor system |
11/02/2006 | US20060244454 System and method for detecting an underground object using magnetic field sensing |
11/02/2006 | US20060243603 Methods and apparatus for the measurement of hydrogen sulphide and thiols in fluids |
11/02/2006 | US20060243438 Method to measure injector inflow profiles |
11/02/2006 | US20060243437 mixing proppant with a fracturing fluid to create a proppant-laden slurry, removing the majority of the fluid from the proppant using centrifugal forces, blending the proppant with gaseous nitrogen and/or liquid carbon dioxide; monitoring and flow control equipment to regulate and/or automate the method |
11/02/2006 | US20060243047 Methods and apparatus of downhole fluid analysis |
11/02/2006 | EP1717412A1 A method for electromagnetically measuring physical parameters of a pipe |
11/02/2006 | EP1327054B1 Method for determining pressure profiles in wellbores, flowlines and pipelines, and use of such method |
11/02/2006 | CA2606165A1 Low temperature monitoring system for subsurface barriers |
11/02/2006 | CA2606085A1 A method for electromagnetically measuring physical parameters of a pipe |
11/02/2006 | CA2605292A1 U-shaped fiber optical cable assembly for use in a heated well and methods for installing and using the assembly |
11/01/2006 | CN2833523Y Fiber grating sensor capable of simultaneously and respectively measuring pressure and temperature |
11/01/2006 | CN2833510Y Automatic measuring apparatus for tubular pipe |
11/01/2006 | CN2833106Y Adjustable anti-seize drift size gauge tool |
11/01/2006 | CN2833105Y High-precision oil well tipper-hopper mass flowmeter |
11/01/2006 | CN2833104Y Data acquisition circuit and control module |
11/01/2006 | CN1854460A Oil-well realtime monitoring system and its controlling method |
11/01/2006 | CN1282819C Photoelectric 12 divisions drilling tools face angle drill following sensor |
10/31/2006 | US7129704 System for monitoring salinity in a water well |
10/31/2006 | US7128153 Treatment of a hydrocarbon containing formation after heating |
10/31/2006 | CA2259637C Logging method |
10/26/2006 | US20060238201 Boring tool tracking/guiding system and method with unconstrained target location geometry |
10/26/2006 | US20060237189 Method of suspending, completing and working over a well |
10/26/2006 | US20060236758 Method and apparatus for estimating of fluid contamination downhole |
10/26/2006 | DE102006015144A1 Verfahren und Rohrleitung zum Übertragen von Signalen The method and the pipeline for transmitting signals |
10/25/2006 | EP1714004A1 System and method for measurements of depth and velocity of instrumentation within a wellbore |
10/25/2006 | EP1558914A4 In-situ detection and analysis of coal bed methane formations with optical instruments and methods and apparatus to facilitate methane production and analysis |
10/25/2006 | EP1442320A4 Relative drill bit direction measurement |
10/25/2006 | EP1295271A4 Burst qam downhole telemetry system |
10/25/2006 | EP1086291B1 Directional drilling system and apparatus |
10/25/2006 | CN1281845C System for carrying well equipment in the well |
10/24/2006 | US7126492 Electromagnetic borehole telemetry system incorporating a conductive borehole tubular |
10/24/2006 | US7124818 Clamp mechanism for in-well seismic station |
10/24/2006 | US7124596 Downhole sorption cooling and heating in wireline logging and monitoring while drilling |
10/19/2006 | WO2006110885A1 Downhole position locating device with fluid metering feature |
10/19/2006 | WO2006110391A2 System and methods of communicating over noisy communication channels |
10/19/2006 | WO2006088743A3 Radial expansion of a wellbore casing against a formation |
10/19/2006 | WO2006008361A1 Train of rods for the high-speed transmission of information in a wellbore |
10/19/2006 | WO2005056725A3 Superior extraction performance using sulfuric acid |
10/19/2006 | US20060235619 Shoulder bed effects removal |
10/19/2006 | US20060233217 Fiber optic sensing systems and methods |
10/19/2006 | US20060233048 Multimode acoustic imaging in cased wells |
10/19/2006 | US20060231251 Well fluids and methods of use in subterranean formations |
10/18/2006 | EP1711682A1 Automated drill string position survey |
10/18/2006 | EP1711681A1 Annulus plugging detection using a pressure transmitter in gas-lift oil production |
10/18/2006 | EP1188265A4 Method and apparatus for determining position in a pipe |
10/18/2006 | CN2828311Y Anti-impact alarm device for underground workover rig |
10/18/2006 | CN1847613A Acidification data monitoring method |
10/18/2006 | CN1847608A Spring type Y-shaped well joint |
10/18/2006 | CN1280514C Earth formation surveying method |
10/17/2006 | US7123162 Subsea communication system and technique |
10/17/2006 | US7123161 Method and apparatus enhanced acoustic mud pulse telemetry |
10/17/2006 | US7121363 Sonde housing and method of manufacture |
10/17/2006 | CA2250090C Method of assaying compressive strength of rock |
10/17/2006 | CA2250030C Method of assaying downhole occurrences and conditions |
10/17/2006 | CA2156224C Mwd surface signal detector having bypass loop acoustic detection means |
10/12/2006 | WO2006108000A2 Wireless communications in a drilling operations environment |