地下水中可溶气态烃的石油化探效果

本文通过实际资料总结了地下水中可溶气态烃在不同地质体中的分布规律以及在碳氢化合物矿床找矿中的应用。使用本方法时应重视烃类气体的组合类型、重烃的多少及湿度系数的高低,并与其他水文地球化学指标相结合。对碳同位素的测定,可以判别气体成因属性。在普查勘探阶段,以研究上部水文地球化学带的可溶气态烃为主,可为早期含油远景预测提供依据,指出进一步工作的有利地区;在开发阶段,研究下部水文地球化学带的可溶气态烃,可提供较为可靠的勘探层段和钻孔。

THE APPLICATION OF SOLUBLE GASEOUSHYDRORCABON IN UNDERGROUND WATER TOGEOCHEMICAL PETROLEUM EXPLORATION

Based on the data available, this paper describes the distribution of solule gaseous hydrocarbon within underground water in various geologic bodies and its application in search for hydrocarbon deposits. In using this method, particular attention should be paid to the association of gases of hydrocarbon type, the proportion of heavy hydrocarbon and the humidity in combination with other hydrogeochemical indexes. The measurement of carbon isotopes may throw light on the geneses and attributes of various gases. In reconnaissance and exploration stage, the study should mainly focus on the soluble gaseous hydrocarbon in upper hydrogeochemical zone, which might provide data for preliminary oil prediction and indicate favourable areas for fur further work; whereas in exploitation stage, an investigation into the soluble gaseous hydrocarbon in the lower hydrogeochemical zone may indicate relatively reliable exploration sectors and drilling sites.