利用自由基浓度研究盆地古地温的方法

METHODS ON PALEOGEOTEMPERATURE STUDIES BY USING FREE RADICAL DENSITY

主要讨论了利用自由基浓度研究盆地古地温的三种方法，并结合实测的自由基浓度值估算了塔里木盆地ＴＺ１井的古地温梯度和反演了琼东南盆地单井的热流变化历史．

That the free radicals increase during the evolution of kerogen, which may result to the variation of the electron Paramagnetic resonance(ERP) spectra, is the basis of free radical density(Ng) being used as thermal index. In this paper, three kinds of methods by using EPR-kerogen method to study paleogeo-temperature of sedimentary basin were discussed. Paleogeothermal gradient of Well TZ1 from Basin were estimated by using the Ng-depth Curves and the variaion history of heat flow of the single well in Qiongdongnan Basin, the South China Sea, was inversed, too, modelling computation combining measured density of free radicals of kerogens.