The content of uranium, thorium and potassium in cuttings can be determined quantitatively, which can reflect lithologic information of drilled formation effectively and help lithologic identification.
*For cuttings logging: natural gamma, uranium-free Gamma, energy spectrum TOC, thorium-uranium ratio, total count rate and total dose rate and other parameters
*Adapt K, Th and Ra, which met international standards
*High energy region characteristic spectral line is adopted, little interference between each nuclide and high spectral resolution
*Provide fixed standard material for easy self-calibration
