Optimization of production and injection wells location in an oil field with faulted oil-rich reservoir zones in southern Iran using GA, PSO, and HGAPSO algorithms

Abstract

The problem is to optimize the location of wells and injection sites in such a way as to maximize oil production and also protect oil reservoirs from possible damages. In this study, oil well location optimization and economic evaluation in the water injection process have been done. In this regard, three particle swarm optimization algorithms (PSO), Genetic Optimization Algorithm (GA) and Hybrid Optimization Algorithm (HGAPSO) and Net Present Value (NPV) calculation have been performed. In this simulation, 100 repetitions and 50 particles were used. The results of the simulations show that the PSO algorithm has a better performance than the GA and HGAPSO algorithms and can be used as a strong and effective method to optimize the location of wells and the number of production and water injection wells in the oil injection process. We want to optimize the production well, the PSO algorithm has been 124.12% more profitable than the production in the well location optimization mode in the conventional way. The GA algorithm has been 124.12% more profitable than the production in the conventional well drilling mode The HGAPSO algorithm has 123.45% more profit than the production in the case of optimizing the location of the well by the conventional method. In the case of optimizing the location of 2 injection wells, the simulation results of each of the PSO, GA and HGAPSO algorithms are respectively 118.6%. and 118.58% and 118.51% shows more profit than the production in the case of optimizing the well location in the conventional way. In the studied reservoir, PSO algorithm in the case where the location of 4 production wells is optimized, the production has increased by 18.7% compared to the production in the case of optimizing the location of wells in the conventional way. When the location of two injection wells is optimized with the PSO algorithm, production has increased by 18.8% compared to the time of drilling an injection well using the conventional method.