The Numerical Simulation Research of Remaining Oil Distribution Regulation after Water Flooding for the Infilling Slow-drilling Well

摘要

There are several methods to enhance oil recovery. Well pattern infilling is one of the more important measures. This paper mainly targets the tertiary infilling slow-drilling well in test site. Establishing the test site geological model by the fine geological modeling technology, and reservoir simulation model is built up, and make history matching for the key development indexes of the water flooding stage by the numerical simulation technology. Then we obtain the remaining oil distribution regulation after water flooding. The remaining oil types are summarized and divided. The remaining oil types include: the remaining oil of local-worse and channel-edge type; the remaining oil of injection-production imperfection type; the remaining oil of secondary-effect type; the remaining oil of stagnation-area type.