Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells › E21B 47 - Survey of boreholes or wells
Patents for E21B 47 - Survey of boreholes or wells (31,352)
08/2012
08/29/2012CN202402022U Self-balanced double-tank thickened oil metering device
08/29/2012CN202400768U Automatic rope distributing, weighing and sounding integrated device of rope coring winch
08/29/2012CN102650207A Interwell layered tracking monitoring method
08/29/2012CN101660407B Pulse generator
08/29/2012CN101598015B High-precision measuring method for high-pressure well cementation slurry and device thereof
08/29/2012CN101575956B Concentric integral water detecting and plugging pipe column
08/29/2012CN101487390B Archie mode method for confirming initial oil saturation of oil layer
08/29/2012CN101482012B Inner sealing surface depth measurer for special petroleum pipe
08/29/2012CN101482010B While-drilling multi-frequency direction induction resistivity survey instrument
08/29/2012CN101397904B Method for monitoring downhole casing strain by using optical fibre sensor
08/29/2012CN101397903B Method for monitoring sleeve circumferential strain by using optical fibre grating sensor
08/29/2012CA2828858A1 Sneak path eliminator for diode multiplexed control of downhole well tools
08/28/2012US8253584 Electric dipole transmission system
08/28/2012US8251160 Measurement while drilling apparatus and method of using the same
08/28/2012US8251140 Fluid monitoring and flow characterization
08/23/2012WO2012112978A2 Method, system, apparatus and computer readable medium forfield lift optimization using distributed intelligence and single-variable slope control
08/23/2012WO2012112926A2 Method and apparatus for strengthening a wellbore
08/23/2012WO2012112799A2 Conduit assembly and method of making and using same
08/23/2012WO2012112155A1 System and method for kicking-off a rotary steerable
08/23/2012WO2012109845A1 Downhole high-power electromagnetic pulse emission apparatus
08/23/2012WO2012109844A1 Downhole time-domain pulsed electromagnetic method for detecting resistivity of stratum outside metal cased pipe
08/23/2012WO2012091791A3 Method and devices for terminating communication between a node and a carrier
08/23/2012WO2012074667A3 Interpretation of real time compaction monitoring data into tubular deformation parameters and 3d geometry
08/23/2012WO2011110929A3 Downhole acoustic sensing tool and method
08/23/2012WO2011079169A8 Hydraulic deployment of a well isolation mechanism
08/23/2012US20120211649 Scanning tool
08/23/2012US20120211279 Method and apparatus for strengthening a wellbore
08/23/2012US20120211278 System and method for remote sensing
08/23/2012US20120211235 Conduit assembly and method of making and using same
08/23/2012US20120210780 Method for detecting structural stability of object area and apparatus for the same
08/23/2012US20120210779 Bubble logging tool
08/23/2012CA2827490A1 Conduit assembly and method of making and using same
08/22/2012EP2489829A1 Use of micr-electro-mechanical systems (mems) in well treatments
08/22/2012EP2489828A1 Use of micro-electro-mechanical systems (mems) in well treatments
08/22/2012EP2489824A2 Scuttle for the monitoring and inspection of a flexible riser
08/22/2012EP2488894A2 Well collision avoidance using distributed acoustic sensing
08/22/2012EP2488722A1 Estimating formation stresses using radial profiles of three shear moduli
08/22/2012EP2097609B1 Coiled tubing tractor assembly
08/22/2012CN202391421U Equipment for measuring process variables of in-well fluid
08/22/2012CN202391420U Electromagnetic-wave gradient MWD (measurement while drilling) device and sliding guide drilling system
08/22/2012CN202391419U Logging while drilling signal transferring device
08/22/2012CN202391418U Downhole tool connector suitable for drill collar connection
08/22/2012CN202391417U 24-arm well diameter imaging logging instrument
08/22/2012CN202391416U Direct reading storage type electronic pressure gage
08/22/2012CN202391415U Pressure meter with valve
08/22/2012CN202391414U Continuous liquid level tester
08/22/2012CN202391413U Wireless while-drilling inclinometer
08/22/2012CN202391412U Pressure balancing device suitable for underground work environment
08/22/2012CN202391411U Female joint weighting lever device for horizontal well
08/22/2012CN202391410U Leather bag
08/22/2012CN202391409U Anti-off tool of instrument while drilling
08/22/2012CN202391408U Anti-collision range unit based on alternating magnetic field measurement
08/22/2012CN202391407U Tractometer of electric submersible pump
08/22/2012CN202391406U Testing apparatus for simulating pressurized operation
08/22/2012CN202391405U Scaling device of MWD (measurement while drilling) apparatus for drilling pressure and torque in petroleum drilling
08/22/2012CN202391357U Centering arm structure of multi-arm elastic sheet type idler wheel centering guide
08/22/2012CN1846128B An apparatus and a method of visulazing target objects in a fluid-carrying pipe
08/22/2012CN102648333A Bubble logging tool
08/22/2012CN102644460A Three-dimensional well pattern model for in-situ mining of shale oil
08/22/2012CN102644458A Instruction downlink encoding and decoding methods based on mud-pressure pulses
08/22/2012CN102644457A Method for calculating distance between adjacent wells whiling drilling
08/22/2012CN102644456A Simple measurement device for oil field well-head liquid levels
08/22/2012CN102080526B Method for extracting gas from bedding level fractured well of ground coal seam roof
08/22/2012CN101694154B Intelligent temperature measurement instrument for coal mine
08/22/2012CN101634220B System for realizing constant current source power supply and bidirectional data transmission through shared cable
08/22/2012CN101575969B Method for measuring pressure of coalbed gas
08/22/2012CN101539014B Thick oil thermal extraction saturated steam flow metering method
08/22/2012CN101387197B Antimagnetic wear resistant jacket for LWD tool
08/22/2012CN101294492B Slurry pulsator
08/21/2012US8248266 Bidirectional telemetry apparatus and methods for wellbore operations
08/21/2012US8245794 Apparatus and method for generating sector residence time images of downhole tools
08/21/2012US8245793 Apparatus and method for determining corrected weight-on-bit
08/21/2012US8245792 Drill bit with weight and torque sensors and method of making a drill bit
08/21/2012US8245780 Method of detecting fluid in-flows downhole
08/21/2012US8245779 Centralizer apparatus
08/21/2012CA2677617C Pressure interference testing for estimating hydraulic isolation
08/21/2012CA2516170C A telescopic data coupler
08/21/2012CA2484104C Method and apparatus for mapping the trajectory in the subsurface of a borehole
08/21/2012CA2392670C Method and apparatus for transmission of well-bore data on multiple carrier frequencies
08/16/2012WO2012109352A2 Three-dimensional modeling of parameters for oilfield drilling
08/16/2012WO2012109247A2 High voltage insulating sleeve for nuclear well logging
08/16/2012WO2012107108A1 Signal and power transmission in hydrocarbon wells
08/16/2012WO2012107107A1 Improved electro-magnetic antenna for wireless communication and inter-well electro-magnetic characterization in hydrocarbon production wells
08/16/2012WO2012106749A1 Structured gas desorption at constant temperature
08/16/2012WO2012082333A3 Intelligent pressure actuated release tool
08/16/2012WO2012074834A3 Logging-while-drilling tool incorporating electronic radiation generator and method for using same
08/16/2012WO2012074666A3 Interpretation of real time casing image (rtci) data into 3d tubular deformation image
08/16/2012WO2012074665A3 An integrated solution for interpretation and visualization of rtcm and dts fiber sensing data
08/16/2012WO2012074664A3 Modeling an interpretation of real time compaction modeling data from multi-section monitoring system
08/16/2012WO2012064610A3 System and method for communicating data between wellbore instruments and surface devices
08/16/2012WO2012058579A3 In-situ downhole x-ray core analysis system
08/16/2012WO2012058443A3 Imaging in oil-based mud by synchronizing phases of currents injected into a formation
08/16/2012WO2012054383A3 Tracer identification of downhole tool actuation
08/16/2012WO2012040210A3 Methods for producing fluids from geological formation
08/16/2012WO2012027630A3 Apparatus and method for microresistivity imaging in nonconductive drilling fluid
08/16/2012WO2012017065A3 Clamp
08/16/2012US20120206144 Method and Apparatus for Monitoring Cement Sheath Degradation Related to CO2 Exposure
08/16/2012US20120205154 Azimuthal orientation determination
08/16/2012CA2826888A1 System and apparatus for modeling the behavior of a drilling assembly
08/16/2012CA2826854A1 Three-dimensional modeling of parameters for oilfield drilling
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