RT Journal Article
ID 017ea47f1044b231
A1 Du, Dongxing
A1 Sun, Shengbin
A1 Zhang, Na
A1 Lv, Weifeng
A1 Wang, Dexi
A1 Li, Yingge
T1 PRESSURE DISTRIBUTION MEASUREMENTS FOR CO2 FOAM FLOW IN POROUS MEDIA
JF Journal of Porous Media
JO JPM
YR 2015
FD 2015-11-16
VO 18
IS 11
SP 1119
OP 1126
K1 carbon dioxide
K1 foam
K1 pressure distribution
K1 porous media
K1 CT measurement
AB CO2 foam technology has found wide application in enhanced oil recovery and carbon dioxide geological storage. To predict its flow behavior in underground reservoirs, pressure distributions for CO2 foam flow in porous media were measured by setting pressure transducers along the samples cores. In the meantime, the transient propagation process was visualized and the water saturation variation histories were obtained with the help of computed tomography (CT) technology. As a comparative study, N2 foam flow resistance characteristics were also investigated in this paper. It is found that CO2 foam has nonlinear pressure distribution in porous media, with lower-pressure drop in the inlet region while a steeper pressure gradient in the region close to the sample outlet, while N2 foam gives a much higher pressure drop compared to CO2 foam and the pressure distribution stays almost linear along the porous media. CT measurement results clearly show pistonlike propagation behavior and indicate an obvious entrance effect for CO2 foam flooding due to the high water saturation in the inlet region of the porous media.
PB Begell House
LK https://www.dl.begellhouse.com/journals/49dcde6d4c0809db,7416c1e545bfaec6,017ea47f1044b231.html