海洋地质前沿2025，Vol.41Issue(3)：99-106,8.DOI:10.16028/j.1009-2722.2024.237
注水工艺对海域咸水层二氧化碳封存能力的影响
The impact of water injection simulation on CO2 storage capacity in offshore saline aquifers
摘要
Abstract
Continuous or alternating water injection into saline aquifers can accelerate CO2 dissolution and in-crease the safety of CO2 storage.However,the hydrodynamic effect may interfere with the development of CO2 plumes,affecting indirectly the actual storage capacity of the aquifer,to which available engineering solution re-main very limited.We studied the potential water injection strategies and the influence of key operational para-meters on the storage safety and capacity during CO2 injection using a single well in an open saline aquifer.Res-ults show that continuous water injection above the gas injection layer after a certain period could enhance signi-ficantly the storage intensity and increase the capacity.The early the water injection starts,the better the results.The storage capacity increases with the increase in water injection rate during gas injection.The temporal effect of water injection post gas injection on storage capacity needs to be evaluated case by case.Under a given total wa-ter injection volume,high-rate water injection during gas injection is more effective to enhance the storage capa-city than low-rate and prolonged water injection.Reducing the spatial interval between the water injection layer and gas injection layer could enhance the actual storage capacity.Meanwhile,water injection could effectively re-duce the CO2 saturation near the injection well,and mitigate the risk of wellbore leakage.关键词
CO2地质封存/注水工艺/封存能力/封存安全性/工艺参数Key words
CO2 geological storage/water injection/storage capacity/storage safety/operational parameters分类
海洋科学引用本文复制引用
杨浦,方小宇,王子雯,黄仕锐,吕言新,杨博..注水工艺对海域咸水层二氧化碳封存能力的影响[J].海洋地质前沿,2025,41(3):99-106,8.基金项目
湛江市科技计划项目"粤西近海盆地规模化CO2封存场址优选及工程规划方案研究"(2022A01061) （2022A01061）
海南省重点研发项目"琼东南盆地天然气水合物资源评价与目标优选"(ZDYF2023GXJS008) （ZDYF2023GXJS008）
