Research Review on Enhanced Geothermal System

doi:10.3969/j.issn.1000－7229.2014.04.003

Abstract

Abstract:

The energy and environment crisis are arousing the world to search for new and clean energy resources. The geothermal energy has advantages of steady and continuous supply, high utilization coefficient, etc. As a new and clean energy development direction of rich resources, the enhanced geothermal system （EGS） is gaining increasing attentions across the world. There are mainly two kinds of research methods: （1） the direct engineering practice research through field test site；（2） the theoretical analysis through numerical simulation. This paper introduced the present research situation of EGS at home and abroad, including the borehole exploring, hydraulic stimulation, seismic monitoring and circulation test during practical field tests, and various numerical simulation studies, especially for the building of several main heat reservoir models: the regular fracture network model, the stochastic fracture network model, the equivalent porous medium model, etc. And then, the research situation in dual energy equations model was introduced. Finally, this paper analyzed and forecasted the development trend of EGS research, which could provide reference for the R&D of EGS in China.

Key words: geothermal power generation, enhanced geothermal system （EGS）, field test site, numerical simulation

GUO Jian, CHEN Jiliang, CAO Wenjiong, JIANG Fangming. Research Review on Enhanced Geothermal System[J]. ELECTRIC POWER CONSTRUCTION, 2014, 35(4): 10-24.

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