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
08/16/2012CA2826671A1 Signal and power transmission in hydrocarbon wells
08/16/2012CA2826376A1 Improved electro-magnetic antenna for wireless communication and inter-well electro-magnetic characterization in hydrocarbon production wells
08/15/2012EP2487327A1 Subsea electronic system
08/15/2012EP2487326A1 Subsea electronic system
08/15/2012EP2486237A2 Formation testing
08/15/2012EP2486235A2 Automated sidewall coring
08/15/2012EP2486234A2 System and method for downhole communication
08/15/2012EP2486233A2 Formation testing planning and monitoring
08/15/2012EP2486232A2 System and method for sensing a liquid level
08/15/2012EP2486231A2 Cooling apparatus and methods for use with downhole tools
08/15/2012EP2486222A1 A flexible unbonded oil pipe system with an optical fiber sensor inside
08/15/2012EP1922571B1 Downhole navigation and detection system
08/15/2012EP1532474B1 Marking of pipe joints
08/15/2012CN202381086U Underground instrument data communication interface device
08/15/2012CN202381085U High-pressure interface device for gas storage wellhead
08/15/2012CN202381084U Identical optical fiber temperature and pressure combined monitoring system
08/15/2012CN202381083U Pressure testing device of internal blowout preventing tool
08/15/2012CN202381082U While-drilling vertical well inclinometer
08/15/2012CN202381081U Mechanical type vertical-well while-drilling inclinometer
08/15/2012CN202381080U Counter-rotating component of gyro inclinometer
08/15/2012CN202381079U Inclining-measuring pup joint combination damping device for wireless directional inclinometer
08/15/2012CN202381078U Piston limit device
08/15/2012CN202381077U Ground block fixator
08/15/2012CN202381076U Cementing interface consolidation strength test instrument
08/15/2012CN202381075U Wellhead observation device for electric pump well
08/15/2012CN202381074U Tool special for disassembling well logging equipment
08/15/2012CN202381073U Control system of sidewall contact device of electric imaging logging instrument
08/15/2012CN202381072U Totally sealed restorable collector for production logging
08/15/2012CN202381071U Wellhead check valve type digital wireless transmission flowmeter of low-production oil producing well
08/15/2012CN202381070U Safety protection device of logging while drilling apparatus
08/15/2012CN202381069U Inductor fixing structure
08/15/2012CN202381068U Mechanical connector
08/15/2012CN202381066U Gas-liquid separating metering device
08/15/2012CN202381062U Three-dimensional physical simulation system for heavy oil horizontal well steam drive
08/15/2012CN102635352A Perforation pressure meter as well as dispenser and fisher thereof
08/15/2012CN102635351A Method for determining fracture pressure of hydraulic fracturing on basis of geological strength index
08/15/2012CN102635350A Sector cement bond logging instrument
08/15/2012CN102635349A Method for measuring water in oil-water separation and device for same
08/15/2012CN102635348A Method for correcting dual-frequency dielectric constants of EWR (electromagnetic wave resistivity) logging-while-drilling instrument
08/15/2012CN102635347A Method for quantitatively enabling thin interbed to be equivalent to formation with horizontal and vertical resistivities
08/15/2012CN102635345A Underground gasification visualized ignition and monitoring device of coal
08/15/2012CN102635340A Novel high-efficient testing and regulating process utilizing optical fiber cable
08/15/2012CN101845942B Plug type circuit sealing device
08/15/2012CN101634223B Method for testing thick oil horizontal well
08/15/2012CN101619655B Drilling method for accurately controlling hole deflection under complicated stratum and guide device
08/15/2012CN101581217B Device and method for coal bed gas pressure/content measurement while drilling
08/15/2012CN101509369B Horizontal well thruster raising tractor for measuring under well gravity force
08/15/2012CN101349152B Acoustic transducers suitable for underground
08/15/2012CN101343996B High-precision locator used for electromagnetic wave logging instrument calibrator or graduator
08/15/2012CA2768581A1 Method of logging a borehole and related apparatus
08/14/2012US8243550 Downhole communication method and system
08/14/2012US8242928 Reliable downhole data transmission system
08/14/2012US8240378 Downhole characterization of formation fluid as a function of temperature
08/14/2012US8240377 Methods of integrating analysis, auto-sealing, and swellable-packer elements for a reliable annular seal
08/14/2012US8240376 Pressure equalising devices
08/14/2012US8240199 Hydraulic signature tester
08/09/2012WO2012106668A2 Multifunctional probe-primers
08/09/2012WO2012106640A2 Connection cartridge for downhole string
08/09/2012WO2012106636A2 Device for verifying detonator connection
08/09/2012WO2012106348A2 Method of minimizing wellbore instability
08/09/2012WO2012106227A2 System and method for determining pressure transition zones
08/09/2012WO2012106028A1 Systems and methods for managing pressure in casing annuli of subterranean wells
08/09/2012WO2012106017A2 Apparatus and methods for tracking the location of fracturing fluid in a subterranean formation
08/09/2012WO2012105850A1 Method and device for deploying a cable and an apparatus in the ground
08/09/2012WO2012074755A3 Cutter with diamond sensors for acquiring information relating to an earth-boring drilling tool
08/09/2012WO2012071183A3 Downhole imaging system and related methods of use
08/09/2012WO2012068119A3 Open-hole logging instrument and method for making ultr-deep magnetic and resistivity measurements
08/09/2012WO2012058435A3 Drilling control system and method
08/09/2012WO2012010898A3 Well
08/09/2012WO2012010897A3 A safety mechanism for a well, a well comprising the safety mechanism, and related methods
08/09/2012WO2011159803A8 Look-ahead seismic while drilling
08/09/2012US20120199400 Drill pipe and corresponding drill fitting
08/09/2012US20120199397 System and Method for Determining Pressure Transition Zones
08/09/2012US20120199394 Processing and geosteering with a rotating tool
08/09/2012US20120199345 Unconventional Gas Fracture Logging Method and Apparatus
08/09/2012US20120199344 Method and Apparatus for Communicating with a Device Located in a Borehole
08/09/2012US20120198927 Rotating Fluid Measurement Device and Method
08/09/2012CA2824839A1 Apparatus and methods for tracking the location of fracturing fluid in a subterranean formation
08/08/2012EP2484857A2 Method and apparatus for performing wireline logging operations in an under-balanced well
08/08/2012EP2483715A2 Electromagnetic logging between a cased borehole and surface
08/08/2012EP2483522A2 Boring element of a ground boring device
08/08/2012EP2483521A2 Apparatus and method for downhole electromagnetic measurement while drilling
08/08/2012CN202374230U Filter circuit module for testing liquid level of oil-gas well
08/08/2012CN202372426U Underground fluid density measuring device
08/08/2012CN202372304U Tension/pressure calibration equipment for logging platform
08/08/2012CN202370509U Isotope tracer injector capable of realizing continuous injection
08/08/2012CN202370508U Real-time pressure monitoring device for pressure crack
08/08/2012CN202370507U Well hole stimulating test device
08/08/2012CN202370506U Liquid level tester of coalbed methane well
08/08/2012CN202370505U Portable positioning system for deep drilling hole groundwater dynamic monitoring device
08/08/2012CN202370504U Automatic perforating depth correcting device
08/08/2012CN202370503U Centering type test joint
08/08/2012CN202370502U Modularization integration well logging system
08/08/2012CN202370501U Electric tracer injector capable of injecting isotopic carrier from side face
08/08/2012CN202370500U Single-well wellhead yield accounting device
08/08/2012CN202370499U Horizontal well pressure logging auxiliary device by using PNN instrument
08/08/2012CN202370498U 多功能计量罐 Multifunctional measuring tank
08/08/2012CN202370494U Pressure relief type guide mechanism for underground testing and controlling meter
08/08/2012CN202370483U Heat conducting cone for thick oil well
08/08/2012CN202370480U Underground pressure test well opening valve tool suitable for annulus pressurization
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