高盐度卤水对CO<sub>2</sub>地质封存的影响: 以江汉盆地潜江凹陷为例

李义连; 房琦; 柯怡兵; 董建兴; 杨国栋; 马鑫

doi:10.3799/dqkx.2012.030

Volume 37 Issue 2

Mar. 2012

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Article Navigation > Earth Science > 2012 > 37(2): 283-288

LI Yi-lian, FANG Qi, KE Yi-bing, DONG Jian-xing, YANG Guo-dong, MA Xin, 2012. Effect of High Salinity on CO2 Geological Storage: A Case Study of Qianjiang Depression in Jianghan Basin. Earth Science, 37(2): 283-288. doi: 10.3799/dqkx.2012.030

Citation:

LI Yi-lian, FANG Qi, KE Yi-bing, DONG Jian-xing, YANG Guo-dong, MA Xin, 2012. Effect of High Salinity on CO₂ Geological Storage: A Case Study of Qianjiang Depression in Jianghan Basin. Earth Science, 37(2): 283-288. doi: 10.3799/dqkx.2012.030

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Effect of High Salinity on CO₂ Geological Storage: A Case Study of Qianjiang Depression in Jianghan Basin

doi: 10.3799/dqkx.2012.030

School of Environmental Studies, China University of Geosciences, Wuhan 430074, China

Received Date: 2012-01-09
Publish Date: 2012-03-15

Abstract

Abstract

The brine resource in the Qianjiang depression in Jianghan basin is rich in the brine resource because alternating deposits of gypsum mudstone, mudstone as well as sandstone of Qianjiang Formation form the potential sites for CO₂ geological storage. However, the salinity in Qianjiang Formation is very high with the average value up to 283.25 g/L. The purpose of this study is to investigate the physical and chemical responses under the condition of high salinity. The results show that the CO₂ dissolved in brine and sequestered in minerals decline significantly as a result of directly injecting CO₂ into the brine with high salinity, which may affect the storage safety. Moreover, high salinity will lead to serious salt precipitation around the injection well which may reduce the injectivity. High salinity can also cause the high pressure build up around the injection well. The method of CO₂ injection combined with brine production can effectively mitigate the severe pressure build up and salt precipitation. In this way, we can maximize the utilization of brine resource and the underground space and achieve both the econimic benifits and the environmental benefits.
- CO₂ geological storage,
- brine,
- high salinity,
- CO₂ injection with brine production,
- pollution control,
- hydrogeology

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References

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Effect of High Salinity on CO2 Geological Storage: A Case Study of Qianjiang Depression in Jianghan Basin

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Effect of High Salinity on CO₂ Geological Storage: A Case Study of Qianjiang Depression in Jianghan Basin