STUDY ON THE HYDROCARBON CHARGE HISTORY IN THE 2ND MEMBER OF XUJIAHE FORMATION OF WEST SICHUAN BY EVIDENCE FROM FLUID IN CLUSIONS
川西地区须二段油气充注历史的流体包裹体分析

The comprehensive analysis of type, occurrence, composition and thermodynamic characteristics of inclusions provides an important foundation for study on the hydrocarbon charge history. Based on the analysis of component and fluorescent characteristic, the inclusions had been divided into saline inclusions, hydrocarbon inclusions and asphalt inclusions. Though the analysis of composition of hydrocarbon inclusions, they had been divided into 4 types which represent 4 hydrocarbon charging processes. The comprehensive study on inclusions, integrated with burial history, show that regional hydrocarbon charging has gone through an evolution process of low-maturation stage, maturation stage, highmaturation stages and structural adjustment stage, which provide an foundation for the exploration and development of west Sichuan.