This calibration procedure stipulates the technical requirements, calibration conditions, calibration items, calibration methods, processing of calibration results and calibration cycle for various types of gamma logging tools. This calibration procedure is applicable to the calibration of newly manufactured (or newly purchased), in use and repaired gamma logging tools. The calibration of other gamma logging tools of the same type, such as gamma logging tools and borehole loggers that classify lithology, can be used as a reference.
EJ/J 1-2007 history
2007EJ/J 1-2007 Verification regulation for gamma-ray logger