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