汤原断陷煤成油地球化学特征

汤原断陷下第三系地层几年天然气勘探中发现了煤成油显示，展示该断陷具有煤成烃的勘探前景。应用有机地球化学和有机岩石学分析技术，结合地质研究认识，探讨了汤原断陷下第三系煤系烃源岩的发育特征及生烃条件，研究了煤成油的有机地球化学性质和生源特征，建立了煤成油和油源岩的关系，对指导汤原断陷下步煤成烃勘探有实际意义。

GEOCHEMICAL CHARACTERISTIC OF THE COAL-FORMED OIL OF TANGYUAN RIFT

Coal formed oil is discovered in Lower Tertiary of Tangyuan Rift by natural gas exploration in recent years.It shows the exploration potential of coal formed hydrocarbon of this rift.This paper uses organic geochemical and organic petrographic analysis technique combining with geologic study recognition to discuss the development characteristic and hydrocarbon generation conditions of the hydrocarbon source rock of Lower Tertiary coal system of Tangyuan Rift.Then it studies the geochemical property and generation source characteristic of coal formed oil,constructs a relation between coal formed oil and oil source rock,providing a directing significance for next step of the exploration of coal formed hydrocarbon.