Method of and apparatus for determining the proportion of at lea

Method of and apparatus for measuring the mean concentration of

Method of and passive apparatus for detecting radon

Method of assaying uranium with prompt fission and thermal neutr

Method of calibrating multi-channel nuclear energy spectra

Method of collecting and processing spectral data for the earth'

Method of delineating naturally fractured intervals in subterran

Method of detecting an object in an examination zone, and device

Method of detecting carbon dioxide in a downhole environment

Method of determining drilling fluid invasion

Method of determining petro-physical information with high...

Method of determining the bulk strength of strata

Method of determining the density of substrata

Method of distinguishing between crude oils

Method of energy resolved gamma-ray logging

Method of extracting formation density and Pe using a pulsed...

Method of gain regulation for downhole spectroscopy tools withou

Method of introducing a radioactive substance into a well

Method of kick detection and cuttings bed buildup detection...

Method of logging a borehole