重庆大学学报2024，Vol.47Issue(12)：57-69,13.DOI:10.11835/j.issn.1000-582X.2023.263
四川盆地雷口坡组盐水含水层CO2埋存能力评估
Evaluation of the storage capacity of saline aquifers in the Leikoupo Formation,Sichuan Basin
摘要
Abstract
Assessing CO2 storage capacity in saline aquifers is fundamental to supporting China's carbon neutrality goals.The Sichuan Basin,an important oil and gas production area in southwest China,lacks in-depth quantitative research on CO2 storage potential in its deep saline aquifers.The Leikoupo Formation(T2l)is a high-quality brine reservoir within the Sichuan Basin,with its fourth(T2l4),third(T2l3),and first(T2l1)members identified as target reservoirs for CO2 sequestration.This study utilizes an analytical solution to assess overpressure induced by multiwell simultaneous injection,and applies the MATLAB-based script CO2BLOCK to evaluate the CO2 storage potential of deep saline aquifers in the Leikoupo Formation.Results show that under a 30-year continuous CO2 injection scenario,the CO2 storage capacity of the Leikoupo Formation reservoir in the Sichuan Basin is 0.83 Gt,with the fourth member showing the highest capacity and the first member the lowest.The maximum sustainable injection rates per well for the fourth,third and first members are 0.550 Mt/a,0.051 Mt/a and 0.054 Mt/a,with corresponding maximum sustainable overpressures of 3.09 MPa,5.67 MPa and 6.55 MPa,respectively.The optimal economic configurations(number of wells,well spacing in kilometers)for T2l4,T2l3 and T2l1 are(16,17)(20,17)and(16,19),respectively,with storage capacities of 0.50 Gt,0.07 Gt and 0.04 Gt under these configurations.关键词
四川盆地/雷口坡组/盐水含水层/CO2地质埋存/埋存能力/多井并注Key words
Sichuan Basin/Leikoupo Formation/saline aquifer/geologic CO2 storage/storage capacity/multiwell injection分类
能源科技引用本文复制引用
饶杰,谢健..四川盆地雷口坡组盐水含水层CO2埋存能力评估[J].重庆大学学报,2024,47(12):57-69,13.基金项目
国家留学基金委西部计划项目(20210815016) （20210815016）
国家自然科学基金面上项目(41472275). Supported by China Scholarship Council-'for Academic Visitors from Western China'(20210815016),and the General Program of National Natural Science Foundation of China(41472275). （41472275）
