第四纪沉积物的天然热释光中储存有自沉积以来的累积辐射剂量。油气藏上方天然辐射场和土壤样品中矿物组合的不均一性综合形成了土壤样品的天然热释光异常。根据样品的热释光强度和发光曲线的差异，可以圈定油气藏在地表的投影边界 The natural thermoluminescence of Quaternary sediments stores the accumulated radiation dose since sedimentation. The heterogeneity of the mineral assemblages in the natural radiation field above the reservoir and in the soil sample resulted in the formation of a natural thermoluminescence anomaly in the soil samples. Depending on the difference between the thermoluminescence intensity of the sample and the luminescence curve, the projection boundary of the reservoir on the earth’s surface can be delineated