Evaluation of CO2 Sequestration Suitability in Bohai Bay Basin Based on Entropy Weighted TOPSIS Approach
DOI:
https://doi.org/10.54097/knq9n415Keywords:
Carbon dioxide storage; Bohai Bay Basin; suitability evaluation; entropy weight TOPSIS metho.Abstract
CCUS (Carbon Capture, Utilization and Storage) is one of the key technologies to cope with global climate change, and an effective way to reduce greenhouse gas emissions on a large scale and mitigate global warming in the future. Therefore, the evaluation and target selection of favorable areas for CO2 sequestration are crucial. Based on the five primary geotectonic units in the Bohai Bay Basin, i.e., Canning Rise, Liaodong Bay Depression, Bohai Central Depression, Jiyang Depression, and Huanghua Depression, the entropy-weighted TOPSIS method was used to evaluate the conditions for CO2 storage based on the conditions of the Bohai Bay Basin, such as sedimentation (sedimentary thickness, sedimentary phases), tectonics (fracture, seismicity, etc.), storage-cover assemblage, geothermal temperature, heat flow, etc. The entropy-weighted TOPSIS method was used to evaluate the conditions for CO2 storage. Considering the factors of geological safety, storage scale and economic appropriateness, a CO2 storage appropriateness evaluation index system consisting of 3 first-level indexes and 11 second-level indexes is constructed, and the establishment of this index system is of reference significance for screening and determining the favorable areas of CO2 storage in the Bohai Bay Basin. The evaluation results show that the order of CO2 storage suitability in the Bohai Bay Basin is as follows: Huanghua depression, Bozhong depression, Liaodong Bay depression, Jiyang depression, and Canning uplift.
Downloads
References
[1] YAN Huamin, LI Lei, LI Lintao et al. Evaluation of CO2 storage suitability in China's offshore basins based on hierarchical analysis and fuzzy evaluation[J]. Frontiers of Marine Geology,2024,40(01):79-93.
[2] SHAO Lei, ZHU Weilin, WU Guoxuan et al. Characteristics of some rare earth elements in sedimentary rocks from Bozhong Depression and surrounding areas[J]. Journal of Tongji University (Natural Science Edition),2001(06):662-665.
[3] Xu Changgui. Bohai Sea strike-slip transition zone and its control on the formation of large and medium-sized oil and gas fields[J]. Earth Science,2016,41(09):1548-1560.
[4] ZHU Weilin, WU Jingfu, ZHANG Gongcheng et al. Tectonic differential evolution of Cenozoic basins offshore China and the direction of hydrocarbon exploration[J]. Geological Frontiers,2015,22(01):88-101.
[5] ZHAO Guolian, ZHAO Chenglin. Seismic-sedimentary phases of the Bozhong Depression[J]. Journal of Chengdu Institute of Technology, 2002(01):41-48.
[6] Liu T. Characterization of Paleoproterozoic-Neoproterozoic sediments and sources in the eastern Bohai Bay Basin [D]. China University of Geosciences (Beijing),2020.
[7] LIU, YIMING, LIU, LIJUN, WU, ZHIPING, et al. New insight into East Asian tectonism since the late Mesozoic inferred from erratic inversions of NW-trending faulting within the Bohai Bay Basin[J]. 2022, 10217-30.
[8] Q Jiafu, YU Fusheng, LU Kezheng et al. Tectonic overview of Mesozoic basins in the Bohai Bay region[J]. Geological Frontiers, 2003(S1):199-206.
[9] Liu Pei. Neoproterozoic oil and gas enrichment characteristics and reservoir formation mode in the Bohai Bay Basin[D]. China University of Petroleum (East China),2015.
Downloads
Published
Issue
Section
License
Copyright (c) 2025 Academic Journal of Science and Technology

This work is licensed under a Creative Commons Attribution 4.0 International License.