ABSTRACT

A study of geochemistry and mineralogical associations led to the conclusions that the Natural Gamma Ray Spectral Analysis Log could be used in determining paleo environment and sedimentary source areas. In addition, a study of Natural Gamma Ray Spectral Analysis Log showed that a large number of zones were being misinterpreted through the use of Natural Gamma Rays. The various problems encountered with the conventional Gamma Ray are illustrated in several examples and conclusions have been drawn about the effectiveness of the Natural Gamma Ray Spectral Analysis Log in evaluating reservoirs to their fullest extent. Several conclusions were drawn about the applications and interpretations that should be applied to this log.

Keywords:
log analysis, concentration, shale, Upstream Oil & Gas, thorium, log analyst, gamma ray, radioactive element, potassium, radioactivity
Subjects:
Formation Evaluation & Management, Open hole/cased hole log analysis
This content is only available via PDF.
1979. Society of Petrophysicists & Well Log Analysts
You can access this article if you purchase or spend a download.