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四川石油管理局井下作业处建成自然伽(亻马)刻度模型井。它由三个模拟地层构成。中间一层为高放射性地层,厚1.5米。其上下以范店乡白云岩为低放射性地层,厚度分别为1.2米和1.8米。高放射性地层是用花岗岩、绿豆岩和含磷泥质白云岩磨粉混合,并加入水泥和聚醋酸乙烯粘结而成。经取样分析,高放射性地层之钾含量为4.55%,铀含量为8.02PPM,钍含量为26PPM。接近于四川泥质地层平均铀、钍、钾含量的两倍。低放射性地层之钾含量为
Sichuan Petroleum Administration underground operations to build natural gamma (Ge) scale model wells. It consists of three simulated formations. The middle layer of high-radioactive strata, 1.5 meters thick. Fandian dolomite rocks are low-radioactive formations from top to bottom, with thicknesses of 1.2 meters and 1.8 meters respectively. The high-radiogenic formations are made by mixing granite, mung bean and phosphorus-bearing dolomite dolomite and cementing it with polyvinyl acetate. After sampling analysis, potassium content of high-radioactive formations was 4.55%, uranium content of 8.02PPM, thorium content of 26PPM. Close to the average amount of uranium, thorium and potassium in the muddy stratum of Sichuan Province. Low radioactive stratum potassium content of