TY - JOUR
T1 - CO 2 sequestration by mineral trapping in natural analogues in the Yinggehai Basin, South China Sea
AU - Liu, Rui
AU - Heinemann, Niklas
AU - Liu, Jianzhang
AU - Zhu, Weilin
AU - Wilkinson, Mark
AU - Xie, Yuhong
AU - Wang, Zhenfeng
AU - Wen, Tao
AU - Hao, Fang
AU - Haszeldine, R. Stuart
N1 - Funding Information:
This research was supported by the 111 project (No. B14031), the National Natural Science Foundation of China (No. 41672141 and No. 41702157) and the Young scholars development fund of SWPU (No. 201699010085). NH has received funding from the European Union's H2020 Accelerating CCS technologies and UKCCSRC (EP/P026214/1). SH is funded by EPSRC and NERC. We appreciate the collaboration and enthusiastic support of Hongjun Yang, Jianxiang Pei, Antao Xiao, Lifeng Wang, Huolan Zhang, and Nengping Ai at the Zhanjiang Branch of CNOOC Ltd.
Publisher Copyright:
© 2019 Elsevier Ltd
PY - 2019/6
Y1 - 2019/6
N2 - Mineral trapping of CO 2 by precipitation of carbonate minerals is seen as the most permanent and secure mechanism of CO 2 storage. We have investigated mineral trapping in CO 2 -rich siliciclastic reservoirs of the Upper Miocene age in the Yinggehai Basin (South China Sea) and used nearby CO 2 -poor reservoirs of similar age as benchmarks for the analysis. Within the reservoir, the CO 2 has triggered the reaction from calcite plus chlorite to ankerite plus kaolinite, which traps 5 mol of CO 2 per mole of chlorite. Geochemical modelling shows that the total amount of permanently trapped CO 2 is approximately one half of the CO 2 in the newly formed ankerite. Caprock mineralogy shows that CO 2 leakage has occurred and CO 2 has migrated into the shale-rich caprock, but without loss of caprock integrity.
AB - Mineral trapping of CO 2 by precipitation of carbonate minerals is seen as the most permanent and secure mechanism of CO 2 storage. We have investigated mineral trapping in CO 2 -rich siliciclastic reservoirs of the Upper Miocene age in the Yinggehai Basin (South China Sea) and used nearby CO 2 -poor reservoirs of similar age as benchmarks for the analysis. Within the reservoir, the CO 2 has triggered the reaction from calcite plus chlorite to ankerite plus kaolinite, which traps 5 mol of CO 2 per mole of chlorite. Geochemical modelling shows that the total amount of permanently trapped CO 2 is approximately one half of the CO 2 in the newly formed ankerite. Caprock mineralogy shows that CO 2 leakage has occurred and CO 2 has migrated into the shale-rich caprock, but without loss of caprock integrity.
KW - CO geological storage
KW - Mineral trapping
KW - Reservoir overpressure
KW - Yinggehai basin
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U2 - 10.1016/j.marpetgeo.2019.03.018
DO - 10.1016/j.marpetgeo.2019.03.018
M3 - Article
AN - SCOPUS:85063430989
SN - 0264-8172
VL - 104
SP - 190
EP - 199
JO - Marine and Petroleum Geology
JF - Marine and Petroleum Geology
ER -