NDLI: Short-term safety risk assessment of CO$_{2}$ geological storage projects in deep saline aquifers using the Shenhua CCS Demonstration Project as a case study

Content Provider	Springer Nature Link
Author	Diao, Yujie Zhang, Senqi Wang, Yongsheng Li, Xufeng Cao, Hong
Copyright Year	2014
Abstract	Although CO$_{2}$ geological storage has been recognized as an effective strategy to lower carbon emissions directly, there are no suitable guidelines for safety risk assessment of CO$_{2}$ geological storage projects in deep saline aquifers in China and elsewhere. When CO$_{2}$ is injected into deep saline aquifers, stratigraphic and structural trapping is the major basic mechanism controlling CO$_{2}$ storage capacity and migration in reservoirs. Therefore, a safety risk assessment method is proposed in this paper using perspectives from hydrogeological and environmental geology. The uncertainties and risks consist of CO$_{2}$ leakage, ground deformation, and induced earthquakes. Identifying and assessing potential risks are the first and most important step in the process of risk assessment. Based on the identification of risks of CO$_{2}$ geological storage projects, we built an elementary risk evaluation index system in an analytic hierarchy process framework. Meanwhile, the possibility of occurrence and damage to the environment and public caused by CO$_{2}$ leakage, ground deformation, and induced earthquakes was analyzed in detail, and current risk criteria were also summarized. Furthermore, using the Shenhua CO$_{2}$ Capture and Storage Demonstration Project as a case study, we performed a risk identification and evaluation by using qualitative or semi-quantitative methods in sequence, as well as developing the related preliminary risk management measures. This method and case study for short-term safety risk assessment could provide a guideline for site selection, injection design, and monitoring of CO$_{2}$ geological storage projects in deep saline aquifers.
Starting Page	7571
Ending Page	7586
Page Count	16
File Format	PDF
ISSN	18666280
Journal	Environmental Earth Sciences
Volume Number	73
Issue Number	11
e-ISSN	18666299
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2014-12-21
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	CO$_{2}$ geological storage Deep saline aquifer Short-term safety risk Risk identification Risk evaluation Geology Hydrology/Water Resources Geochemistry Environmental Science and Engineering Terrestrial Pollution Biogeosciences
Content Type	Text
Resource Type	Article
Subject	Global and Planetary Change Earth-Surface Processes Soil Science Environmental Chemistry Pollution Geology Water Science and Technology

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