Hits:

Indexed by:会议论文

Date of Publication:2014-04-26

Included Journals:EI、Scopus

Volume:962-965

Page Number:1641-1644

Abstract:CO2/water displacement process in porous media under conditions of CO2 geological storage was observed by using X-ray CT. The porous media was a packed bed filled with glass beads. The size of the glass beads in the packed bed is 0.2mm in diameter and the flow rates were adjusted by the fractional CO2 flow rates from 1.2 to 3.6 ml/min. The porosity and CO2 saturation were measured during the packed bed flooding experiments under conditions of two-phase of CO2 and brine (P ~ 8.0 MPa and T = 40  C). The observation results show that the CO2 displacement efficiency is strongly affected by the heterogeneity of the packed bed. However, it is the buoyancy that plays a key role on governing the CO2 saturation distribution, which was observed from the experiments under variant of fractional flow rates. The results obtained from this study, especially the CO2 saturation distribution, provided informations on further investigating the mechanism of the movement and immobilization of CO2 plumes for CO2 geological storage. ? (2014) Trans Tech Publications, Switzerland.