An experimental study on oil migration and accumulation in low-permeability sandstone;

The objective of the experiments is to study the influences of fracture topography, fracture width and oil viscosity in oil migration.

Based on the images collected from the simulation of oil migration in the fracture medium, a set of image processing methods are developed by using the modern image processing technology.

Based on the ideal model of pore structure and stress analysis of oil column unconsidering mass diffusion, the occurrence boundary conditions of petroleum migration under the action of earthquake are discussed.

Based on the investigations of the fossil spores and pollen found in oil and gas, the mechanisms of petroleum migration were discussed according to the geological background of the basin.

The course of petroleum migration in the Biyang depression could been dividedinto three stages——the early migration stage and the main migration stage andthe late migration stage based on the distribution and composition of organic inclu-sions.

On the basis of geological studies of hydrocarbon migration and accumulation in the middle and shallow formations in Dongying depression, this experiment models the influence of opening faults of different fault-plane shapes on petroleum migration and accumulation with a 2-D model.

, Zhanhua depression, this experiment models the influence of opening fault on petroleum migration and accumulation in the formation with a 2-D model.