The Impacts of Different CO2 Injection Temperature on Heat Extraction Rate in CO2-EGS Based on CCS Demonstration Project

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In this paper we use Majiagou geologic formation in Erdos Carbon Caputure and Storage(CCS) demonstration project aera as artificial geothermal reservoir, and create numerical models of Enhanced Geothermal System(EGS) using CO2 as a heat transfer carrier. In order to analyze the impacts of CO2 injection temperatures on heat extraction rate and the sustainability of CO2-EGS, five cases with different CO2 injection temperature are designed. Simulation results show that the range of the average heat extraction rate of case 1~5 is 6.56~8.47MW in the whole CO2-EGS operation period. The heat extraction rates vary over time, And it is 6.37~7.9MW in CO2 and water displacement stage and 6.64~8.68MW after aqueous phase dispear respectively. Injection temperature of CO2 significantly impacts the heat extraction rate of EGS .

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Periodical:

Advanced Materials Research (Volumes 588-589)

Edited by:

Lawrence Lim

Pages:

21-26

Citation:

J. Na et al., "The Impacts of Different CO2 Injection Temperature on Heat Extraction Rate in CO2-EGS Based on CCS Demonstration Project", Advanced Materials Research, Vols. 588-589, pp. 21-26, 2012

Online since:

November 2012

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$38.00

[1] ZHANG Hongtao, WEN Dongguang and LI Yilian: Conditions for CO2 geological sequestration in China and some suggestions. Regional Geology of China Vol. 12 (2005), pp.1107-1110.

[2] QIANG Wei, LI Yilian and WEN Dongguang: Advances and Problems of Geological Disposal of Greenhouse Gases. Geological Science and Technology Information Vol. 2(2006) , pp.83-87.

[3] Yanagisawa Norio, Matsunaga Isao and Sugita Hajime: Temperature-dependent scale precipitation in the Hijiori Hot Dry Rock system, Japan . Geothermics Vol. 1(2008), pp.1-18.

DOI: https://doi.org/10.1016/j.geothermics.2007.08.003

[4] Brown, D.: A hot dry rock geothermal energy concept utilizing supercritical CO2 instead of water. In: Proceedings of the Twenty-Fifth Workshop on Geothermal Reservoir Engineering, Stanford University(2000), p.233–238.

[5] SHI Ji-an , SHAO Yi and ZHANG Shun-cun: Lithofacies Paleogeography and Sedimentary Environment in Ordovician Majiagou Formation, Eastern Ordos Basin. Nature Gas Geoscience Vol. 3(2009) , pp.317-324.

[6] Fu Jinhua : A study of the Sealing Properties of the Palaeozoic Caprocks in Erduosi Basin. Atural Gas Industry Vol. 6(1991), pp.6-11.

[7] KANG Ling, WANG Shi-long and LI Chuan: Reservoir technology in enhanced geothermal systems. Machinery Design & Manufacture Vol. 9(2008), pp.141-143.

[8] Pruess, K: Enhanced geothermal systems (EGS) using CO2 as working fluid - A novel approach for generating renewable energy with simultaneous sequestration of Carbon. Geothermics, Vol. 6(2006) 35, pp.351-367.

DOI: https://doi.org/10.1016/j.geothermics.2006.08.002

[9] Keith Evans: ENHANCED/ENGINEERED GEOTHERMAL SYSTEM: AN INTRODUCTION WITH OVERVIEWS OF DEEP SYSTEMS BUILT AND CIRCULATED TO DATE,. Geothermal energy development advocated by Li Siguang of the 40th Anniversary Conference –geothermal development seminars.

[10] Shi Xiaoqing, Zhang Keni and Wu Jichun: The history and application of TOUGH2 code. Geotechnical Investigation & Surveying Vol. 10(2009) , p.29—39.