Investigation on nanofluid flooding effect on enhancement oil recovery process in a random pore distribution incomplete cone

摘要

By reducing the exploration of new oil reservoirs, enhanced oil recovery from previous oil reservoirs is a solution to supply energy demand. In order to develop the production, various technologies and methods have been proposed such as steaming, direct heating, flooding by nano-fluid, chemical injection, polymer injection and etc. In the present study, nanofluid flooding has been attempted on a rock reservoir with incomplete cone geometry and its performance has been evaluated on oil recovery. The porous media is considered heterogeneous in simulation in accordance with oil reservoirs. The heterogeneous geometry considered in this study is incomplete cone that is heterogeneous in a random environment. In order to simulate this two-phase flow, two-phase Darcy equations and mass transfer equations has been used. In this case, the equations are solved for the inlet of the nano-fluid into the reservoir once from larger cross-section, and again for smaller cross-section. The effect of changing volume fraction, inlet fluid flow rate, diffusion, capillary pressure and amount of the reservoir rock porosity on the recovery factor of oil has been investigated.