Application of Thermoluminescence Dosimetry in the Exploration for Oil and Gas Using Chinese GR-200 LiF (MG,Cu.P) TLD

Abstract

Radiometric methods have been used in exploration for oil and gas by the Institute of Geophysical and Geochemical Exploration (IGGE) since 1984. More than 20,000 km2 of regional survey and 2,000 km2of detailed survey on the surface have been covered successively by this method. As a result, the distribution pattern of abnormal radiometric fields over oil and gas fields is confirmed by cavity gamma thermoluminescence dosimetry, which is an ideal radiometric accumulation measurement technique in searching for oil and gas. GR-200 LiF(Mg,Cu,P) dosemeters made in China are suitable detection elements. A thermoluminescence anomaly delineated survey over an oil field in comparison with drilling results, shows the advantages of this method in that 91% of dry holes or wells with water are outside the anomaly, and 61% of oil wells are inside the anomaly.