Borehole compensated oxygen activation nuclear well logging

Broad energy spectra neutron source for logging and method

Carbon/oxygen well logging method and apparatus

Carbon/oxygen well logging method and apparatus

Coal logging system

Coating thickness monitor for multiple layers

Combination of epithermal and inelastic neutron scattering metho

Combined x-ray diffraction and fluorescence spectroscopy apparat

Detection mark and method and apparatus for detecting mark

Detection of atoms using monochromatic X-rays

Detection of impurities in a fluid containing free gas using nuc

Detection of impurities in fluid flowing in refinery pipeline or

Determination of mineral concentrations in slurries thereof

Determination of water saturation in subsurface earth formations

Determining element concentrations in samples

Determining the concentration of sulphur in coal

Determining the water cut and water salinity in an oil-water flo

Device for assaying uranium and/or thorium in ore specimens comp

Device for examining a body by means of penetrating radiation

Diamond identification