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Geothermal Distribution Characteristics in the Qinshui Basin and Its Significance to the Production of Coalbed Methane
[Image: see text] Temperature significantly affects the storage and transport of coalbed methane (CBM). Studies of geothermal distribution characteristics are important for the exploration and exploitation of CBM. In this study, more than 150 heat flow temperature data from coalbed methane wells in...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2021
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8320166/ https://www.ncbi.nlm.nih.gov/pubmed/34337231 http://dx.doi.org/10.1021/acsomega.1c02147 |
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author | Yu, Yina Meng, Zhaoping |
author_facet | Yu, Yina Meng, Zhaoping |
author_sort | Yu, Yina |
collection | PubMed |
description | [Image: see text] Temperature significantly affects the storage and transport of coalbed methane (CBM). Studies of geothermal distribution characteristics are important for the exploration and exploitation of CBM. In this study, more than 150 heat flow temperature data from coalbed methane wells in the Qinshui Basin were analyzed to investigate the geothermal distribution and its controlling factors. The results show that the geothermal gradient of the no. 3 coal seam ranges from 0 to 3.7 °C/hm with an average of 1.6 °C/hm, and the terrestrial heat flow of the no. 3 coal reservoir ranges from 0.9 to 94.6 mW/m(2) with an average of 41.5 mW/m(2). The reservoir temperature shows high values in the central and northwest parts of the basin, while the east and west edges of the basin show negative geothermal anomalies. It is found that groundwater has significant effects on the geothermal distribution in the Qinshui Basin, and with the increase of the groundwater level, the geothermal gradient decreases linearly. In addition, the geothermal gradient and terrestrial heat flow first increase and then tend to be stable with the increase in value of the total dissolved substances. Besides, with an increase in floor elevation, the geothermal gradient first increases linearly and then decreases linearly, obtaining a maximum value at about 450 m (transition floor elevation). This phenomenon is the result of the balance between heat supplying and heat losing. The geothermal distribution characteristics in the Qinshui Basin determine the reservoir temperature of the coalbed methane, and in turn, the reservoir temperature affects the adsorption, desorption, and diffusion behaviors of coalbed methane in situ. |
format | Online Article Text |
id | pubmed-8320166 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-83201662021-07-30 Geothermal Distribution Characteristics in the Qinshui Basin and Its Significance to the Production of Coalbed Methane Yu, Yina Meng, Zhaoping ACS Omega [Image: see text] Temperature significantly affects the storage and transport of coalbed methane (CBM). Studies of geothermal distribution characteristics are important for the exploration and exploitation of CBM. In this study, more than 150 heat flow temperature data from coalbed methane wells in the Qinshui Basin were analyzed to investigate the geothermal distribution and its controlling factors. The results show that the geothermal gradient of the no. 3 coal seam ranges from 0 to 3.7 °C/hm with an average of 1.6 °C/hm, and the terrestrial heat flow of the no. 3 coal reservoir ranges from 0.9 to 94.6 mW/m(2) with an average of 41.5 mW/m(2). The reservoir temperature shows high values in the central and northwest parts of the basin, while the east and west edges of the basin show negative geothermal anomalies. It is found that groundwater has significant effects on the geothermal distribution in the Qinshui Basin, and with the increase of the groundwater level, the geothermal gradient decreases linearly. In addition, the geothermal gradient and terrestrial heat flow first increase and then tend to be stable with the increase in value of the total dissolved substances. Besides, with an increase in floor elevation, the geothermal gradient first increases linearly and then decreases linearly, obtaining a maximum value at about 450 m (transition floor elevation). This phenomenon is the result of the balance between heat supplying and heat losing. The geothermal distribution characteristics in the Qinshui Basin determine the reservoir temperature of the coalbed methane, and in turn, the reservoir temperature affects the adsorption, desorption, and diffusion behaviors of coalbed methane in situ. American Chemical Society 2021-07-14 /pmc/articles/PMC8320166/ /pubmed/34337231 http://dx.doi.org/10.1021/acsomega.1c02147 Text en © 2021 The Authors. Published by American Chemical Society Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Yu, Yina Meng, Zhaoping Geothermal Distribution Characteristics in the Qinshui Basin and Its Significance to the Production of Coalbed Methane |
title | Geothermal Distribution Characteristics in the Qinshui
Basin and Its Significance to the Production of Coalbed Methane |
title_full | Geothermal Distribution Characteristics in the Qinshui
Basin and Its Significance to the Production of Coalbed Methane |
title_fullStr | Geothermal Distribution Characteristics in the Qinshui
Basin and Its Significance to the Production of Coalbed Methane |
title_full_unstemmed | Geothermal Distribution Characteristics in the Qinshui
Basin and Its Significance to the Production of Coalbed Methane |
title_short | Geothermal Distribution Characteristics in the Qinshui
Basin and Its Significance to the Production of Coalbed Methane |
title_sort | geothermal distribution characteristics in the qinshui
basin and its significance to the production of coalbed methane |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8320166/ https://www.ncbi.nlm.nih.gov/pubmed/34337231 http://dx.doi.org/10.1021/acsomega.1c02147 |
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