Research and Application of Integral Numerical Simulation Method for P Reservoir in Daqing A Oilfield

The digital and analog work areas are scattered, and the fitting accuracy of boundary wells is low. Therefore, the research and application of the overall numerical simulation method in the P reservoir of Daqing A oilfield provides a good method reference for the subsequent numerical simulation work in other large blocks. Through the research and verification of theoretical and practical models, the study compares three different boundary treatment methods, and clarifies that the flow boundary method can accurately simulate the change of boundary flow and obtain more accurate simulation results, and at the same time, a large model cutting and backfilling method is formed, multi-person collaborative simulation is realized, the historical fitting study of P reservoir in Oilfield A is completed, the remaining oil description is carried out, and the distribution type of residual oil in Reservoir P in Oilfield A is clarified, which is mainly based on three types: fault shading, uncontrollable well pattern and plane interference [1–8].