Site selection and developmental prospect of a hot dry rock resource project in the Matouying Uplift, Hebei Province

doi:10.13745/j.esf.2020.1.11

Abstract

Abstract:

As a significant component of geothermal resources, hot dry rock (HDR) geothermal energy has attracted increasing attention due to its clean, stable and renewable characteristics and great potential of geothermal power generation. Hot dry rock research is still at the early stage in China. Here, based on analysis of HDR exploitation projects around the world, we proposed several geothermal and geological indices for HDR evaluation and showed that the Matouying Uplift has great HDR exploitation potentials. Taking the HDR resource project in the Matouying Uplift as an example, we discussed the rules and indices for site selection through analyses of cap and reservoir rock conditions and deep geothermal anomaly. We also built a conceptual model of the drilling area in the Matouying Uplift for estimating temperatures of deep geothermal reservoirs.

Key words: hot dry rock, site selection index, genetic model, Matouying Uplift

CLC Number:

P314

QI Xiaofei, SHANGGUAN Shuantong, ZHANG Guobin, PAN Miaomiao, SU Ye, TIAN Lanlan, LI Xiang, QIAO Yongchao, ZHANG Jianyong. Site selection and developmental prospect of a hot dry rock resource project in the Matouying Uplift, Hebei Province[J]. Earth Science Frontiers, 2020, 27(1): 94-102.

Figures/Tables 10

Fig.1 Simplified regional geological map showing the geological setting of the Matouying prospecting area

Fig.2 Transportation system around the Matouying prospecting area

Fig.3 Simplified geological map of the Matouying prospecting area

Fig.4 Gravity anomaly map of the Matouying prospecting area

Fig.5 Isothermal map of the Matouying prospective area at 4000 m depth

Fig.6 Simplified geological map of the cross-section of faults in the Matouying prospecting area. Adapted from [20].

Fig.7 Schematic profile of the multi-well system in the Matouying prospective area

Table 1 Comparison of stratum characteristics of M-1 and Lijing GRY-1 bores for HDR prospecting

岩性	厚度/m
岩性	GRY-1	M-1
第四系松散沉积物	0~270	0~250
明化镇组砂岩、泥岩	270~1 000	250~1 150
馆陶组砂岩、泥岩	1 000~1 250	1 150~1 350
太古宙变质花岗岩类或变质岩系	1 250~2 500	1 350~4 000

Fig.8 Plots of temperature vs. depth for GRY-1 (measured) and M-1 (expected) prospecting bores

Fig.9 HDR conceptual model of geothermal system in Matouying workspace

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