Optimization of CO2-EOR process management in polish mature reservoirs using smart well technology

Abstract

Because of severe European environmental policy, increasing carbon dioxide emissions with simultaneous growth of natural resources consumption the position of Poland as one of the most prospective emerging market seems to be considerably endangered. Taking into consideration considerable difficulties in the discovery of new affluent hydrocarbon reservoirs as well as the significant technical progress one of the most popular solution is sequestration of CO2 in depleted hydrocarbon reservoirs or those in the final exploitation phase. Such solution allows for improvement of both oil recovery factor and underground storage of harmful to the environment gas. Nevertheless, the implementation of enhanced oil recovery (EOR) methods is strictly combined with the risky economy of entire project, therefore in order to exclude any possible drawback the project should be proceed by the detailed analyze of economic management and optimization process. In this paper authors proposed the development plan for one of the Polish multi horizontal hydrocarbon reservoir using CO2-EOR methods with smart multilateral wells technology, which multidimensional exploitation strategy was optimized by genetic algorithm method. Based on the performed model, ten-year productions forecasts were made. The obtained project net present value (NPV) increase of additional 3 MM$ unambiguously confirmed the significant efficiency of the applied advanced exploitation solutions with indication of the interesting prospects of their implementation in similar reservoirs.