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Title: Steady-state supercritical CO2 and brine relative permeability in Berea sandstone at different temperature and pressure conditions

Journal Article · · Water Resources Research
DOI:https://doi.org/10.1002/2017wr020810· OSTI ID:1533008

In this study, we measure steady-state two-phase supercritical CO2-brine relative permeabilities in a 61 cm-long Berea sandstone core at three different conditions (408C and 12.41 MPa, 408C and 8.27 MPa, and 608C and 12.41 MPa) under primary drainage. We use pressure taps to obtain pressure drops of individual sections of the core, and X-ray Computed Tomography (CT) to obtain in situ saturation profiles, which together help to mitigate the capillary end effect. We include previously measured relative permeabilities at 208C and 10.34 MPa, and compare all the data using both an eye-test and a statistical test. We find no appreciable temperature and pressure dependence of CO2 relative permeability within 20–608C and 8.27–12.41 MPa. We find slight changes in the brine relative permeability between supercritical CO2 conditions (40–608C and 8.27–12.41 MPa) and the liquid CO2 condition (208C and 10.34 MPa). The temperature and pressure independence of CO2 relative permeability has been previously recognized and reassured in this work using a capillary-effect-free method. This allows one to use a single CO2 relative permeability curve in modeling two-phase CO2 flow within 20–608C and 8.27–12.41 MPa.

Research Organization:
Univ. of Texas, Austin, TX (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
SC0001114
OSTI ID:
1533008
Journal Information:
Water Resources Research, Vol. 53, Issue 7; ISSN 0043-1397
Publisher:
American Geophysical Union (AGU)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 12 works
Citation information provided by
Web of Science

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Cited By (1)

CO 2 ‐Saturated Brine Injection Into Unconsolidated Sandstone: Implications for Carbon Geosequestration journal November 2019