Present Geothermal Characteristics and Influencing Factors in the Xiong’an New Area, North China
The present geothermal characteristics and influencing factors are analyzed to conduct geothermal resource exploration in the Xiong’an New Area. Thermal conductivity data for 100 rock samples are obtained from different wells and a sedimentary strata thermal conductivity column is proposed...
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doaj-9c0c72d9d3174e1db5b6d5340864b7422020-11-24T21:50:05ZengMDPI AGEnergies1996-10732019-10-011220388410.3390/en12203884en12203884Present Geothermal Characteristics and Influencing Factors in the Xiong’an New Area, North ChinaSasa Guo0Chuanqing Zhu1Nansheng Qiu2Boning Tang3Yue Cui4Jiatang Zhang5Yuhang Zhao6State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, ChinaState Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, ChinaState Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, ChinaState Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, ChinaState Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, ChinaState Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, ChinaState Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, ChinaThe present geothermal characteristics and influencing factors are analyzed to conduct geothermal resource exploration in the Xiong’an New Area. Thermal conductivity data for 100 rock samples are obtained from different wells and a sedimentary strata thermal conductivity column is proposed. From these data, heat flow distribution in the area is mapped using equilibrium temperature logs obtained for 32 wells. The heat flow in this area is found to be 53.3−106.5 mW·m<sup>−2</sup> (average: 73 mW·m<sup>−2</sup>). The uplift heat value in Niutuozhen and Rongcheng uplift is 106.5 and 90 mW·m<sup>−2</sup>, respectively. The sag heat flow is relatively low and the Baxian sag’s heat flow value is 48.9−61.6 mW·m<sup>−2</sup>. Thermal conductivity differences among Cenozoic caprock, Proterozoic carbonate reservoirs, and basement rock mainly affects the geothermal distribution. The low and high thermal conductivities of the caprock and thermal reservoir as well as basement, respectively, cause heat flow redistribution in the surface during conduction. Groundwater rises to geothermal reservoirs through heat-controlling faults, causing convective heat transfer and increasing the geothermal reservoir temperature; therefore, high-temperature groundwater accumulates in the shallow uplift areas. The caprock’s thin uplift area exhibits a high geothermal background due to water convergence. Understanding the geothermal characteristics and influencing factors is necessary for understanding the distribution law and factors influencing geothermal resources and guiding geothermal exploration and development in the Xiong’an New Area.https://www.mdpi.com/1996-1073/12/20/3884geothermal gradientterrestrial heat flowrock thermal conductivitygeothermal resourcesxiong’an new area |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Sasa Guo Chuanqing Zhu Nansheng Qiu Boning Tang Yue Cui Jiatang Zhang Yuhang Zhao |
spellingShingle |
Sasa Guo Chuanqing Zhu Nansheng Qiu Boning Tang Yue Cui Jiatang Zhang Yuhang Zhao Present Geothermal Characteristics and Influencing Factors in the Xiong’an New Area, North China Energies geothermal gradient terrestrial heat flow rock thermal conductivity geothermal resources xiong’an new area |
author_facet |
Sasa Guo Chuanqing Zhu Nansheng Qiu Boning Tang Yue Cui Jiatang Zhang Yuhang Zhao |
author_sort |
Sasa Guo |
title |
Present Geothermal Characteristics and Influencing Factors in the Xiong’an New Area, North China |
title_short |
Present Geothermal Characteristics and Influencing Factors in the Xiong’an New Area, North China |
title_full |
Present Geothermal Characteristics and Influencing Factors in the Xiong’an New Area, North China |
title_fullStr |
Present Geothermal Characteristics and Influencing Factors in the Xiong’an New Area, North China |
title_full_unstemmed |
Present Geothermal Characteristics and Influencing Factors in the Xiong’an New Area, North China |
title_sort |
present geothermal characteristics and influencing factors in the xiong’an new area, north china |
publisher |
MDPI AG |
series |
Energies |
issn |
1996-1073 |
publishDate |
2019-10-01 |
description |
The present geothermal characteristics and influencing factors are analyzed to conduct geothermal resource exploration in the Xiong’an New Area. Thermal conductivity data for 100 rock samples are obtained from different wells and a sedimentary strata thermal conductivity column is proposed. From these data, heat flow distribution in the area is mapped using equilibrium temperature logs obtained for 32 wells. The heat flow in this area is found to be 53.3−106.5 mW·m<sup>−2</sup> (average: 73 mW·m<sup>−2</sup>). The uplift heat value in Niutuozhen and Rongcheng uplift is 106.5 and 90 mW·m<sup>−2</sup>, respectively. The sag heat flow is relatively low and the Baxian sag’s heat flow value is 48.9−61.6 mW·m<sup>−2</sup>. Thermal conductivity differences among Cenozoic caprock, Proterozoic carbonate reservoirs, and basement rock mainly affects the geothermal distribution. The low and high thermal conductivities of the caprock and thermal reservoir as well as basement, respectively, cause heat flow redistribution in the surface during conduction. Groundwater rises to geothermal reservoirs through heat-controlling faults, causing convective heat transfer and increasing the geothermal reservoir temperature; therefore, high-temperature groundwater accumulates in the shallow uplift areas. The caprock’s thin uplift area exhibits a high geothermal background due to water convergence. Understanding the geothermal characteristics and influencing factors is necessary for understanding the distribution law and factors influencing geothermal resources and guiding geothermal exploration and development in the Xiong’an New Area. |
topic |
geothermal gradient terrestrial heat flow rock thermal conductivity geothermal resources xiong’an new area |
url |
https://www.mdpi.com/1996-1073/12/20/3884 |
work_keys_str_mv |
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