Occurrence and distribution of Remaining oil in fluvial facies Reservoirs in Guantao formation in Gudao and Gudong oil fileds

摘要

The Gudao and Gudong oil fields are non-compartmentalized structural regime. On the base of the summarization of the main features of the fluvial reservoir in Gudao and Gudong oil filed, the occurrence mechanism of the remaining oil is carefully analyzed in terms of pore microstructure and the reservoir macroscopic heterogeneity. The existing form and distribution of the remaining oil in different isotropic pore system and non-isotropic pore system are entirely summarized.