首页|Potential evaluation of saline aquifers for the geological storage of carbon dioxide:A case study of saline aquifers in the Qian-5 member in northeastern Ordos Basin

Potential evaluation of saline aquifers for the geological storage of carbon dioxide:A case study of saline aquifers in the Qian-5 member in northeastern Ordos Basin

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The well-developed coal electricity generation and coal chemical industries have led to huge carbon dioxide(CO2)emissions in the northeastern Ordos Basin.The geological storage of CO2 in saline aquifers is an effective backup way to achieve carbon neutrality.In this case,the potential of saline aquifers for CO2 storage serves as a critical basis for subsequent geological storage project.This study calculated the technical control capacities of CO2 of the saline aquifers in the fifth member of the Shiqianfeng Formation(the Qian-5 member)based on the statistical analysis of the logging and the drilling and core data from more than 200 wells in the northeastern Ordos Basin,as well as the sedimentary facies,formation lithology,and saline aquifer development patterns of the Qian-5 member.The results show that(1)the reservoirs of saline aquifers in the Qian-5 member,which comprise distributary channel sand bodies of deltaic plains,feature low porosities and permeabilities;(2)The study area hosts three NNE-directed saline aquifer zones,where saline aquifers generally have a single-layer thickness of 3‒8 m and a cumulative thickness of 8‒24 m;(3)The saline aquifers of the Qian-5 member have a total technical control capacity of CO2 of 119.25×106 t.With the largest scale and the highest technical control capacity(accounting for 61%of the total technical control capacity),the Jinjie-Yulin saline aquifer zone is an important prospect area for the geological storage of CO2 in the saline aquifers of the Qian-5 member in the study area.

Carbon burialCarbon neutralCO2 storage in saline aquiferDistributary channel sand bodyPotential evaluationTechnical control capacityCO2 geological storage engineeringOrdos Basin

Yan Li、Peng Li、Hong-jun Qu、Gui-wen Wang、Xiao-han Sun、Chang Ma、Tian-xing Yao

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Guoneng Jinjie Energy Co.,Ltd.,Shenmu 719319,China

Department of Geology,Northwest University,Xi'an 710069,China

Carbon Neutrality College(Yulin),Northwest University,Xi'an 710069,China

National&Local Joint Engineering Research Center of Carbon Capture and Storage Technology,Xi'an 710069,China

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Top 10 key scientific and technological projectsTop 10 key scientific and technological projectsCarbon Neutrality College(Yulin)Northwest University project entitled Design and research of largescale CCUS cluster construction in Yulin area,Shaanxi Province

GJNYKJ[2021]128:GJNY-21-51YL2022-38-01

2024

10.31035/cg2023045

中国地质(英文)
中国地质调查局,中国地质科学院

中国地质(英文)

CSTPCD
ISSN：2096-5192
年,卷(期)：2024.7(1)
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