CO2 geological storage in sedimentary basins: An update on the potential and suitability evaluation and a field test

作者：Yujie Diao, Xin Ma, Chenglong Zhang, Chenglong Zhang, Jin Xiao-lin, Xufeng Li, Chao Zhang, Chao Zhang · 发表于：Energy Geoscience · 年份：2024 · DOI：10.1016/j.engeos.2024.100369 · 被引用次数：7 · 研究领域：CO2 Sequestration and Geologic Interactions、Geothermal Energy Systems and Applications、Methane Hydrates and Related Phenomena

China has pledged to peak carbon dioxide (CO 2 ) emissions by 2030 and achieve carbon neutrality by 2060. Carbon capture and storage (CCS) will play a key role in these efforts. Over the past several years, the China Geological Survey (CGS) has completed the Suitability Evaluation Map of CO 2 Geological Storage in Main Sedimentary Basins in China and Adjacent Sea Regions in 2017. This map reflects the suitability of the first- and secondary-order tectonic units within sedimentary basins for CO 2 geological storage for CCS planning. The Junggar Basin is recognized as an important region for future CCS projects. Results from a mesoscale evaluation using the volume method indicate that deep saline aquifers represent the most significant resources for CO 2 storage, with potential ranging from 48 × 10 9 to 164 × 10 9 t (with a P50 value of 96 × 10 9 t ). The highest storage potential is identified in the central and northern parts of the basin, reaching up to 9.5 × 10 6 t/km 2 at the P50 probability level. In contrast, the hinterland, eastern, and western parts of the basin generally exhibit storage potential of below 1.0 × 10 6 t/km 2 at the same probability level. The CGS has also characterized historical CO 2 plume migration in reservoirs at the storage site of the Shenhua CCS demonstration project and conducted numerical simulations of CO 2 plume migration for periods of 10 and 20 years following the shutdown of the injection well. The CGS implemented a kiloton-scale pilot tes...