The Research Of Pubei Oilfield Residual Oil Distribution Characteristics And Tapping Potential Method

PuBei oilfield sedimentary environment for the delta front facies, plane sandbodies distribution in underwater distributary channel microfacies sandbodies, mainly in the north, ribbon plane continuity. After entering the high water-cut stage, sand body distribution characteristics, the influence of remaining oil distribution Portuguese north oilfield, restricts the complex and scattered oilfield development. Therefore, reveals the remaining oil distribution of crude oil, find out the water flooding, remaining after the quantity, the spatial distribution characteristics of the geological factors, and the relationship between injection-production condition is improving, potential residual oil displacement efficiency and the premise and foundation of oil recovery.Through the application of reservoir geology theories, the comprehensive utilization of geology, well logging and seismic data, and the Portuguese north oilfield geological characteristics, structure and fine recognition reservoir description, the narrow channel sand body surface exhibition features. On this basis, using dynamic monitoring data, combined with numerical simulation technology and develop the residual oil distribution in different types, the remaining oil distribution, and optimize the economic and effective control and management measures to improve water flooding, sweep volume, improve water flooding.Through the study, has formed a set of high-resolution sequence stratigraphy and reservoir subdivision contrast, geological modeling, grid nodes in period with the logging interpretation, thick reservoirs, internal structure of reservoir heterogeneity index, reservoir numerical simulation and fine formation and distribution of remaining oil, comprehensive description and predict the supporting method and technique, perfect the narrow thin sand body potential residual oil control technology, high water-cut stage for solving similar oilfields development potential, improve remaining provides methods and approaches, with extensive practical.