APPLICATION OF ORGANIC INCLUSIONS TECHNOLOGY TO THE STUDY OF OIL-GAS MIGRATION AND ACCUMULATION

In this paper an advanced organic inclusion analysis technique was used to study the homogenization temperature and organic components of hydrocarbon inclusion in E₂f of the northern slope of Gaoyou depression.The results indicate that the source inputs mainly come from lower aquatic algae and higher plants waxiness.The sedimentary environment was reducing and the salinity of the water medium was high.The hydrocarbons had been mature before they entered into the reservoirs.Contrasting with biomarker parameters of hydrocarbon inclusions and source rocks,it can be found that the hydrocarbons of the E₂f mainly come from the E₂f².Application of organic inclusions to oil-gas migration and accumulation shows that hydrocarbons migration of the study area mainly occur from later Eocene of early Tertiary to late Tertiary and the former one is most significant.It is consistent with regional structural movement in Gaoyou depression.