TY - JOUR
T1 - Effect of superficial velocity on liquid injectivity in SAG foam EOR. Part 2
T2 - Modelling
AU - Gong, Jiakun
AU - Flores Martinez, Wendy
AU - Vincent-Bonnieu, Sebastien
AU - Kamarul Bahrim, Ridhwan Zhafri
AU - Che Mamat, Che A Nasser Bakri
AU - Tewari, Raj Deo
AU - Mahamad Amir, Mohammad Iqbal
AU - Farajzadeh, Rouhollah
AU - Rossen, William
PY - 2020
Y1 - 2020
N2 - Surfactant-alternating-gas (SAG) is a favored method of foam injection, which has been proved as an efficient way for enhancing oil recovery. However, foam flow is extremely complicated, and there are still unsolved problems for foam application. One is liquid injectivity. Our previous studies suggest that the injectivity in a SAG process is determined by propagation of several banks near the injection well that are not represented by current foam models. Uniform bank properties were assumed. However, in a companion paper, our experimental results show that the dimensionless propagation velocity and the total mobility of banks during the liquid-injection period depends on superficial velocity. Shearing-thinning behavior is observed. In radial flow, the superficial velocity varies with distance from the well. In this study, we scale-up the experimental results using a radial bank-propagation model. The comparison of liquid injectivity estimated from conventional foam simulators (Peaceman equation) and the bank-propagation model show that the conventional foam models cannot represent the effect of the superficial-velocity-dependent fluid properties during liquid injection in a SAG process. The shear-thinning behavior can lead to much better liquid injectivity than expected, which should be accounted for in a field application of a SAG foam process.
AB - Surfactant-alternating-gas (SAG) is a favored method of foam injection, which has been proved as an efficient way for enhancing oil recovery. However, foam flow is extremely complicated, and there are still unsolved problems for foam application. One is liquid injectivity. Our previous studies suggest that the injectivity in a SAG process is determined by propagation of several banks near the injection well that are not represented by current foam models. Uniform bank properties were assumed. However, in a companion paper, our experimental results show that the dimensionless propagation velocity and the total mobility of banks during the liquid-injection period depends on superficial velocity. Shearing-thinning behavior is observed. In radial flow, the superficial velocity varies with distance from the well. In this study, we scale-up the experimental results using a radial bank-propagation model. The comparison of liquid injectivity estimated from conventional foam simulators (Peaceman equation) and the bank-propagation model show that the conventional foam models cannot represent the effect of the superficial-velocity-dependent fluid properties during liquid injection in a SAG process. The shear-thinning behavior can lead to much better liquid injectivity than expected, which should be accounted for in a field application of a SAG foam process.
KW - Bank-propagation model
KW - Enhanced oil recovery
KW - Foam
KW - Injectivity
KW - Superficial velocity
KW - Surfactant-alternating-gas
UR - http://www.scopus.com/inward/record.url?scp=85087058028&partnerID=8YFLogxK
U2 - 10.1016/j.fuel.2020.118302
DO - 10.1016/j.fuel.2020.118302
M3 - Article
SN - 0016-2361
VL - 279
JO - Fuel
JF - Fuel
M1 - 118302
ER -