A novel optimization method based on interlayer equilibrium displacement for heterogeneous reservoir with high efficiency

Abstract

In order to formulate the optimal control scheme of injection and production rates for heterogeneous reservoir scientifically and effectively, so as to realize the efficient development of heterogeneous reservoirs, a production optimization method based on interlayer equilibrium displacement for heterogeneous reservoir is proposed. The proposed method decomposes the origin production optimization problem into multiple easy-to-solve sub-problems. Solving the sub-problems can obtain the approximate optimal solution of the origin production optimization problem at a small computational cost. Then use the approximate optimal solution as the initial solution, the number of iteration steps required for origin optimization problem will be greatly reduced. The proposed method is applied to an actual reservoir production optimization. The results show that the method can greatly shorten the calculation time and increase the calculation efficiency by 3 times while ensuring the optimization effect.