关键词: 渤中油区, 地下流体动力学, 压实压力和势分析, 二次运移, 有利的油气聚集区

Abstract: This paper analyzes the energy change of underground fluid flow and points out the primary factor which controls the hydrocarbon migration and accumulation is the field of force acting on underground fluid,that is,the distribution characteristics of the fluid potential.By applying the CPPS system software,this paper takes into consideration other geological information and analyzes the characteristics of fluid potential of the main productive intervals of Bozhong field,discusses the direction of the secondary migration of oil and gas and possible accumulation.The following conclusions are reached: (1)From the point of view of energy,the potential analysis method is the correct process for a quantitative study of the process of the hydrocarbon migration and accumulation; (2)The data of formation pressure,which is necessary for the study of hydrodynamics can be predicted with seismic interval velocity; (3)Generally,the secondary migration of oil and gas is from depression to surrounding arch.The best locations of accumulation are shijiutuo-shaleitian and Bozhong depression,the second is Bonan and its northeastern fault zone,the slope between Bozhong depression and Shijiutuo,the Bodong low arch.The prospect of oil-gas resources is more promising in Bozhong field than we know presently.