Fluid inclusions and their applications to hydrocarbon infilling in the hydrocarbon reservoirs from the second member of the Xujiahe Formation in western Sichuan depression

The fluid inclusions in the hydrocarbon reservoirs from the second member of the Xujiahe Formation in western Sichuan depression may be divided into two categories: saline inclusions and hydrocarbon inclusions,which represent three stages of hydrocarbon infilling,i.e.,low maturation to maturation stage,maturation to high maturation stage,and high maturation to supermaturation stage.