Numerical Simulation Study On Horizontal Well In Lateral Depositional Layer

The three-dimensional structural models of lateral depositional layer are built base on the geological information of the eastern Xing-6 block and the on-site interlayer distribution using a series of technique such as adding vietual wells, building thickness data, and building a virtual gound level.Using the control of sedimentary facies, the precise peoperty model with porosity, permeability and oil saturation and NTG are established.This model accords the actual situation with high degree.The geology model is coarsened.In model coarsening process, arithmetic weight average method is used, thus it enables the coarsening model reflects the form geological feature and the flowing response really. In the history matching process, the parameters sensitive to developing target are analyzed and the matching skills are proposed.The characteristics of remaining oil distribution are given, namely the vertical upward bottom is water flooding, the oil is on the top.The method to determine the inflow percentage of each direction was derivated base on the Brigham-Smith model.The formula is proved by the theory model.Oil-water migration rule is determined by the quasi-tracer method. The fluid in the lateral layer folws from bottom to top.Fluid flow through the interlayer is difficult. The flow of fluid in the lateral layer is under the influence of by gravity and differential pressure. Inflow direction of plane and zones that water breakthrough of vertical of X5-4-A35 and X6-1-A35 were determined using the quasi-tracer method.