THE MECHANICAL ANALYSIS AND EXPERIMENTAL RESEARCH OF SECONDARY HYDROCARBON MIGRATION

Characteristics of the clastic rock reservoir porosity and permeability have important influence to the secondary hydrocarbon migration and accumulation. Different layers of the reservoir rocks have different pore structure and accumulation resistance, and oil and gas reservoirs in different structural positions have different reservoir forming dynamics. The reservoir forming dynamic, together with the reservoir porosity and permeability characteristics determine the oil and gas migration, accumulation and the process of reservoir formation. In this paper, the authers analyed and calculated dynamic and resistance of the secondary hydrocarbon migration and accumulation, then carried out a systematic physical simulation experiment on the focus of the buoyancy as a driving force of the oil and gas migration, and analyzed different controlling factors of the secondary hydrocarbon migration. The works of this paper laid the foundation for carrying out physical simulation of the structural deformation and hydrocarbon migration, and also was the experimental reference for the reservoir formation analysis and evaluation.