Numerical Simulation Of Residual Oil Distribution In Baka Oil Field

Naturally fractured reservoirs distribute widey all over the world,which account for tens of billons barrels of oil reserves,are of great economical and strategic potiential.In China,fractured reservoirs also possess importance role in oil and gas exploitation and production.The development of Naturally Fractured Reservoirs(NFR)provides opportunities for progress in reservoir numerical simulation techniques.In this paper,Baka oilfiled is the experiment and research object,considering the geological distribution of fractures and fracture morphology,filling and seepage features,combining with field production data and reservoir profile data discovereing the existing problems in oilfield development.Based on the heterogeneity of oil reservoir,the distribution characteristics of residual oil are studied by means of geological modeling and numerical simulation.The adjustment of well network deployment is carried out,and a set of final adjustment measures are obtained.It has certain guiding effect on improving the development of similar oilfield in the future.The study shows that the residual oil in the well-meshed area is low,the distribution is dispersed,the well network is not perfect,and the remaining oil is abundant in the western region,and the distribution is relatively concentrated.At present,the production profile of the baka oilfield is poor,and the water is unidirectional.To improve the oilfield development and increase the degree of water drive use,the development adjustment of injection-production system was carried out local pattern encryption on the edge and center area,making cyclic waterflooding on the west block,making single well stimulation on the east block and profile control for individual wells.