【摘要】 羌塘盆地是油气勘查的复杂区,基岩半裸露和烃源岩出露地表给油气化探带来了新的研究课题。这里针对该区地表地质复杂性特征,对油气化探采样深度、地层对油气化探指标的制约特征和相态烃技术应用效果进行了探讨。研究表明,羌塘盆地油气化探最基本的制约因素是地表出露的地层,以及相态烃技术可以抑制地表烃源岩的干扰。更多还原

【Abstract】 The Qqiangtang Basin is a complicated region for oil & gas exploration. It has been a new subject to geochemical surficial survey for petroleum in the area featuring bedrock partially undefended and hydrocarbon strata outcropped. A research on the complexity of surficial geology, geochemical sampling depth, stratigraphical factors affecting geochemical indices and the effect of pyrolysis-desorbed hydrocarbon technology has been performed in the area. The results show that the essential factor controlling petroleum geochemical indices is of those strata outcropped to the surface, and the interference from surficial hydrocarbons could be rejected by using the pyrolysis-desorbed hydrocarbon technology.更多还原