173337 ⎘
Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging operating with magnetic or electric fields produced or modified either by the surrounding earth formation or by the detecting device Operating with fields produced by spontaneous potentials, e.g. electrochemicals or produced by telluric currents
Coal Spontaneous Combustion Downhole Detection System and Method Based on Self-Potential Method
#2Online monitoring of production processes using electron paramagnetic resonance (EPR)
#3SENSING CABLE IN A WELLBORE
#4Online monitoring of production processes using electron paramagnetic resonance (EPR)
#5Capacitive electromagnetic formation surveillance using passive source
#6Method for monitoring salinity within an underground formation
#7Electromagnetic receiver tracking and real-time calibration system and method
#8Capacitive electromagnetic formation surveillance using passive source
#9Electromagnetic receiver tracking and real-time calibration system and method
#10Online monitoring of production processes using electron paramagnetic resonance (EPR)
#11Methods and Systems for Monitoring Spontaneous Potentials in Downhole Environments
#12Time-lapse time-domain reflectometry for tubing and formation monitoring
#13Electromagnetic receiver tracking and real-time calibration system and method
#14Measurement while drilling spontaneous potential indicator using differential magnetometers
#15APPARATUS AND METHODS FOR MEASURING SPONTANEOUS POTENTIAL OF AN EARTH FORMATION
#16Apparatus and method for measuring electrical properties of an underground formation
#17System and method for measuring downhole parameters
#18Method of measuring parameters of a porous medium using nanoparticle injection
#19MEASUREMENT OF INVASION DEPTH WHILE DRILLING UTILIZING STREAMING POTENTIAL
#20Fracture detection via self-potential methods with an electrically reactive proppant
#21Logging tool
#22METHOD, SYSTEM AND LOGGING TOOL FOR ESTIMATING PERMEABILITY OF A FORMATION
#23Apparatus for measuring streaming potentials and determining earth formation characteristics
#24Characterization of formations using electrokinetic measurements
#25Method to monitor reservoir fracture development and its geometry
#26Completion apparatus for measuring streaming potentials and determining earth formation characteristics
#27Wettability from electro-kinetic and electro-osmosis measurements
#28Electro-magnetic acoustic measurements combined with acoustic wave analysis
#29Method and apparatus for combined induction and imaging well logging
#30SYSTEM FOR GEOPHYSICAL PROSPECTING USING INDUCED ELECTROKINETIC EFFECT
#31While-drilling apparatus for measuring streaming potentials and determining earth formation characteristics and other useful information
#32Characterizing properties of a geological formation by coupled acoustic and electromagnetic measurements
#33While-drilling apparatus for measuring streaming potentials and determining earth formation characteristics and other useful information
#34Logging a well
#35Method for real-time well-site interpretation of array resistivity log data in vertical and deviated wells
#36Integrated capacitive sensor system for the measurement of resistivity and dielectric constant in geophysical, environmental, groundwater and related applications
#37Acoustic source for infrasonic electromagnetic wave exploration using induced electrokinetic effect
#38While-drilling methodology for estimating formation pressure based upon streaming potential measurements
#39While-drilling methodology for determining earth formation characteristics and other useful information based upon streaming potential measurements
#40While-drilling apparatus for measuring streaming potentials and determining earth formation characteristics
#41Completion apparatus for measuring streaming potentials and determining earth formation characteristics
#42Methods for locating formation fractures and monitoring well completion using streaming potential transients information
#43Wireline apparatus for measuring steaming potentials and determining earth formation characteristics
#44Process and device for prospecting a porous geological formation