NDLI: A preliminary site selection system for a CO$_{2}$-AGES project and its application in China

Content Provider	Springer Nature Link
Author	Liu, Hejuan Hou, Zhengmeng Li, Xiaochun Wei, Ning Tan, Xiao Were, Patrick
Copyright Year	2015
Abstract	Because of the high costs involved in CO$_{2}$ sequestration in deep saline formations, it has been difficult for its widespread application in the short term. Recently, however, a new technology called “combined geothermal production–CO$_{2}$ sequestration technology” has made the technique more attractive not only by increasing the CO$_{2}$ storage capacity, but also by decreasing the operational costs, through the utilization of geothermal energy, either directly or for the purpose of producing electricity. A CO$_{2}$-aided (or CO$_{2}$-involved) geothermal extraction system (CO$_{2}$-AGES) is presented, based on existing technologies and the new ideas of “combined geothermal production-CO$_{2}$ sequestration” introduced in this paper. This system can be used to extract geothermal energy from sedimentary aquifer formations (low–medium temperature) at different stages. The purpose of this paper is to set up an evaluation system for selecting a suitable site for this CO$_{2}$-AGES system. There are both similarities and differences in the procedure needed for selecting a site for a conventional pure CO$_{2}$ sequestration and for this CO$_{2}$-AGES system. Both are carried out at different scales, including basin, region and target formation scales. The biggest difference is the temperature gradient, which plays an opposite role in the two systems. By using the preliminary ranking and screening method presented in this paper, it can be shown that the Bohaiwan, Songliao and Qiangtang basins have the highest potential for the application of this CO$_{2}$-AGES technology. However, if CO$_{2}$ sequestration is considered alone, the Ordos, Tarim and Bohaiwan basins should be selected as the best three operational sites in China. While preliminary evaluation methods can provide some useful information on the selection of the best sites for the “combined geothermal production–CO$_{2}$ sequestration technology”, more detailed work is still required because of the strong uncertainties that exist in the determination of the upper and lower boundaries for each indicator.
Starting Page	6855
Ending Page	6870
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	2015-03-10
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Site selection CO$_{2}$-AGES Geothermal extraction Hydrothermal reservoir Criteria 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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