THE PATTERNS AND ITS EFFECT FACTORS OF SECONDARY HYDROCARBON MIGRATION

Using porous media model in columns packed with glass beads under hydrostatic condition,the principles of hydrocarbon migration in porous media saturated with water were observed.Different geological factors associating with displacement forces have been tested.Migration front presented three patterns.The relationship among various parameters and its effect on migration pattern were analyzed according to capillary number and Bond number.The patterns include stable advancement,capillary finger and preferable migration pattern.Given the properties of carried beds,the preferable pathway of hydrocarbon migration depend on the single buoyancy or lesser displacement forces.