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Title Geochemical reactions of the Lower Tuscaloosa sandstone of the SECARB partnership at Cranfield with natural brine under CO2 sequestration conditions
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Short Title
Contributors
Karamalidis, A.
Griffith, C.
Lu, J.
Lopano, C.
Hakala, J.A.
Abstract

Carbon dioxide injection into the Tuscaloosa sandstone formation at Cranfield, Mississippi was launched as an activity of Phase III at the Southeast Regional Carbon Sequestration Partnership (SECARB). In the past, field data were collected and partially compared with experimental laboratory results showing that the brine chemistry was largely unaffected. For the purpose of this study, samples of reservoir sandstone and brine were collected from 10,468 - 10,476 ft depth and a laboratory autoclave experiment was conducted to investigate CO2-rock-brine reactions under reservoir conditions. The experimental conditions were 350 bar of pressure and 125C constant temperature for a reaction period of 103 days, which included over 30 days of brine-rock mixing in the absence of CO2 to ensure steady-state conditions prior to CO2 injection. Overall, the results showed slow interactions in the major lithology of the formation and faster reactions in carbonate-cemented sandstone. Trace metal release stabilized whereas major cations were mobilized when reacted with CO2-saturated brine. X-ray measurements will be used to corroborate surface to brine chemistry.

Collection GCCC Bookshelf
Pages 1
Volume
Issue Number
Keywords Rock-CO2-water interaction Rock-water-CO2 reaction
Year 2012
Date Published 0000-00-00 00:00:00
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Item Type Abstract

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