Author(s)

Mohammad Afkhami Karaei^*, Ali Ahmadi, Hooman Fallah, Shahrokh Bahrami Kashkooli, Jahangir Talebi Bahmanbeglo

Department of Petroleum Engineering, Islamic Azad University, Firoozabad Branch, Firoozabad, Iran.

Vast amounts of world oil reservoirs are in natural fractured reservoirs. There are different methods for increasing recovery from fractured reservoirs. Miscible injection of water alternating CO₂ is a good choice among EOR methods. In this method, water and CO₂ slugs are injected alternatively in reservoir as miscible agent into reservoir. This paper studies water injection scenario and miscible injection of water and CO₂ in a two dimensional, inhomogeneous fractured reservoir. The results show that miscible water alternating CO₂ gas injection leads to 3.95% increase in final oil recovery and total water production decrease of 3.89% comparing to water injection scenario.

Simulation Study, CO₂, Water Alternating Gas Injection, Fractured Reservoirs

Karaei, M. , Ahmadi, A. , Fallah, H. , Kashkooli, S. and Bahmanbeglo, J. (2015) Field Scale Simulation Study of Miscible Water Alternating CO₂ Injection Process in Fractured Reservoirs. Geomaterials, 5, 25-33. doi: 10.4236/gm.2015.51003.