Enhanced oil recovery using CO2 injection and inflow control devices


  • Stian Juvet Sørensen
  • Joachim Rød Knarrum
  • Ole Christian Kristoffersen Sannes
  • Lars Lia
  • Ramesh Timsina
  • Haavard Aakre
  • Britt M. E. Moldestad






CO2 capture is an important aid to achieve the goals of reduced emissions. Today the market for captured CO2 is limited. Injection of CO2 in oil reservoirs is one way of utilizing the captured CO2 and provide permanent storage of the CO2. By injecting CO2, the mobility of oil is increased, and the amount of residual oil is reduced. This is called enhanced oil recovery. The goal of this study is to show the effects of CO2 injection combined with autonomous inflow control valves on oil production. Simulations are carried out using the software OLGA in combination with ROCX. The input data to the simulations are based on information obtained from a literature study. To show the effect of the autonomous inflow control valves and CO2 injection, the simulations were compared with simulations performed without autonomous inflow control valves and CO2 injection. The results from the simulations show that CO2 injection contributes to increase the mobility of both oil and water which leads to an increase in both oil and water/CO2 production. Autonomous inflow control valves reduce the amount of water produced by choking the production in areas with water breakthrough. The combination of CO2 injection and autonomous inflow control valves results in a higher oil-water ratio and a considerably lower water production.