TY - GEN
T1 - Numerical analysis of immiscible/near-miscible CO2-WAG displacement, incorporating compositional and interfacial tension effects
AU - Wang, G.
AU - Pickup, G.
AU - Sorbie, K.
AU - Mackay, E.
N1 - Funding Information:
The authors would like to gratefully acknowledge the funding for this study by the sponsor of the “BICCO2” project at Heriot-Watt University (Petronas and Uzma). Energi Simulation is thanked for funding the chair in Reactive Flow Simulation at Heriot-Watt University held by Eric Mackay. CMG Ltd. is thanked for the use of the GEM simulator.
Publisher Copyright:
© 2018 European Association of Geoscientists and Engineers, EAGE. All rights reserved.
PY - 2018/11
Y1 - 2018/11
N2 - The central objective of this paper is to study the balance and interactions of the different mechanistic contributions to the physics occurring during oil displacement by CO2 (both continuous and WAG). Mechanism 1 (M1) is the conventional oil stripping/compositional effect and Mechanism 2 (M2) is the near-miscible IFT effect on oil relative permeability through enhanced layer flow. Using sufficiently fine-scale models, we explain how these mechanisms interact with each other and affect the sweep and local displacement efficiency in a heterogeneous permeability field. We believe that studying the key processes separately leads to a greater insight into the physics of CO2 displacement, and this will help us to simulate the transition from immiscible to miscible displacement consistently at larger scales.
AB - The central objective of this paper is to study the balance and interactions of the different mechanistic contributions to the physics occurring during oil displacement by CO2 (both continuous and WAG). Mechanism 1 (M1) is the conventional oil stripping/compositional effect and Mechanism 2 (M2) is the near-miscible IFT effect on oil relative permeability through enhanced layer flow. Using sufficiently fine-scale models, we explain how these mechanisms interact with each other and affect the sweep and local displacement efficiency in a heterogeneous permeability field. We believe that studying the key processes separately leads to a greater insight into the physics of CO2 displacement, and this will help us to simulate the transition from immiscible to miscible displacement consistently at larger scales.
UR - http://www.scopus.com/inward/record.url?scp=85063152544&partnerID=8YFLogxK
U2 - 10.3997/2214-4609.201802985
DO - 10.3997/2214-4609.201802985
M3 - Conference contribution
AN - SCOPUS:85063152544
SP - 1
EP - 5
BT - 5th CO2 Geological Storage Workshop 2018
PB - EAGE Publishing BV
T2 - 5th CO2 Geological Storage Workshop 2018
Y2 - 21 November 2018 through 23 November 2018
ER -