Many papers have been written describing the theory and interpretation models of the GST* gamma spectrometry tool. This paper presents actual field examples where GST interpretation techniques were used to improve lithology identification and pore-fluid saturation determination. Examples are of varied geographic locations and reservoir conditions.

Keywords:
anhydrite, gamma spectrometry log, log analysis, porosity, computation, society of petroleum engineers, evaluation, hydrocarbon saturation determination, mineral, neutron
Subjects:
Formation Evaluation & Management, Open hole/cased hole log analysis
Copyright 1985, Society of Petroleum Engineers
You can access this article if you purchase or spend a download.