Geothermal potential and genetic mechanisms of the geothermal system in the mountainous area on the northern margin of north china
Geothermal resources as clean and renewable energy can be utilized for agriculture, tourism, and industry. The assessment of geothermal potential and the study of genetic mechanism of the geothermal system is an essential part of geothermal resource development. In this study, 16 steady-state temper...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SAGE Publishing
2022-03-01
|
| Series: | Energy Exploration & Exploitation |
| Online Access: | https://doi.org/10.1177/01445987211050688 |
| _version_ | 1818322227850903552 |
|---|---|
| author | Feng Liu Guiling Wang Wei Zhang Yizuo Shi Chen Yue Baona Dou |
| author_facet | Feng Liu Guiling Wang Wei Zhang Yizuo Shi Chen Yue Baona Dou |
| author_sort | Feng Liu |
| collection | DOAJ |
| description | Geothermal resources as clean and renewable energy can be utilized for agriculture, tourism, and industry. The assessment of geothermal potential and the study of genetic mechanism of the geothermal system is an essential part of geothermal resource development. In this study, 16 steady-state temperature logs are obtained in the mountainous area on the northern margin of North China. Thermal conductivity and heat production rates are tested or collected from more than 200 rock samples of these wells and outcrops around the study area. Based on these data, for the first time, the detailed delineations of temperature distributions, genetic mechanisms of geothermal systems, and resource potential of Hot Dry Rock in the study area are achieved. The heat flow map indicates a low heat flow state with an average value of 53.1 mW/m 2 in the study area, which is lower than the average value of 62.5 mW/m 2 in mainland China. The distribution of hot springs in the area is mainly controlled by fault systems. Heat flow only exhibits a minor effect on the temperature of hot springs and geothermal wells. On this basis, the deep temperature distribution within 3–10 km depths of the study area is calculated using the one-dimensional steady-state heat conduction equation. With it, the reservoir depths of hot springs are estimated to be 3–5 km with temperatures ranging from 70°C to 110°C. Furthermore, a conceptual model for the geothermal system in the study area is derived. According to the results, Northeastern Chengde and northern Beijing exhibit the highest temperatures at all depths. Similar patterns are observed in the temperature distribution maps and the heat flow map, which suggest that the deep temperature distribution is mainly controlled by regional heat flow. With the depth increases, the temperature shows larger variation at each depth level, which is possibly caused by the heterogeneity of crustal composition. According to our resource assessment by volumetric method, the exploitable potential of Hot Dry Rock within the depth of 7–10 km of the study area is equivalent to about 3.1 × 10 11 tons of standard coal, but the barrier is still existing for development under the current technical and economic conditions. |
| first_indexed | 2024-12-13T10:53:27Z |
| format | Article |
| id | doaj.art-0989535ef18246bf82d7cdc96da2920f |
| institution | Directory Open Access Journal |
| issn | 0144-5987 2048-4054 |
| language | English |
| last_indexed | 2024-12-13T10:53:27Z |
| publishDate | 2022-03-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Energy Exploration & Exploitation |
| spelling | doaj.art-0989535ef18246bf82d7cdc96da2920f2022-12-21T23:49:42ZengSAGE PublishingEnergy Exploration & Exploitation0144-59872048-40542022-03-014010.1177/01445987211050688Geothermal potential and genetic mechanisms of the geothermal system in the mountainous area on the northern margin of north chinaFeng Liu0Guiling Wang1Wei Zhang2Yizuo Shi3Chen Yue4Baona Dou5 Technology Innovation Center of Geothermal & Hot Dry Rock Exploration and Development, Ministry of Natural Resources, China Technology Innovation Center of Geothermal & Hot Dry Rock Exploration and Development, Ministry of Natural Resources, China Technology Innovation Center of Geothermal & Hot Dry Rock Exploration and Development, Ministry of Natural Resources, China , CNPC, China , Chinese Academy of Geological Sciences, China , ChinaGeothermal resources as clean and renewable energy can be utilized for agriculture, tourism, and industry. The assessment of geothermal potential and the study of genetic mechanism of the geothermal system is an essential part of geothermal resource development. In this study, 16 steady-state temperature logs are obtained in the mountainous area on the northern margin of North China. Thermal conductivity and heat production rates are tested or collected from more than 200 rock samples of these wells and outcrops around the study area. Based on these data, for the first time, the detailed delineations of temperature distributions, genetic mechanisms of geothermal systems, and resource potential of Hot Dry Rock in the study area are achieved. The heat flow map indicates a low heat flow state with an average value of 53.1 mW/m 2 in the study area, which is lower than the average value of 62.5 mW/m 2 in mainland China. The distribution of hot springs in the area is mainly controlled by fault systems. Heat flow only exhibits a minor effect on the temperature of hot springs and geothermal wells. On this basis, the deep temperature distribution within 3–10 km depths of the study area is calculated using the one-dimensional steady-state heat conduction equation. With it, the reservoir depths of hot springs are estimated to be 3–5 km with temperatures ranging from 70°C to 110°C. Furthermore, a conceptual model for the geothermal system in the study area is derived. According to the results, Northeastern Chengde and northern Beijing exhibit the highest temperatures at all depths. Similar patterns are observed in the temperature distribution maps and the heat flow map, which suggest that the deep temperature distribution is mainly controlled by regional heat flow. With the depth increases, the temperature shows larger variation at each depth level, which is possibly caused by the heterogeneity of crustal composition. According to our resource assessment by volumetric method, the exploitable potential of Hot Dry Rock within the depth of 7–10 km of the study area is equivalent to about 3.1 × 10 11 tons of standard coal, but the barrier is still existing for development under the current technical and economic conditions.https://doi.org/10.1177/01445987211050688 |
| spellingShingle | Feng Liu Guiling Wang Wei Zhang Yizuo Shi Chen Yue Baona Dou Geothermal potential and genetic mechanisms of the geothermal system in the mountainous area on the northern margin of north china Energy Exploration & Exploitation |
| title | Geothermal potential and genetic mechanisms of the geothermal system in the mountainous area on the northern margin of north china |
| title_full | Geothermal potential and genetic mechanisms of the geothermal system in the mountainous area on the northern margin of north china |
| title_fullStr | Geothermal potential and genetic mechanisms of the geothermal system in the mountainous area on the northern margin of north china |
| title_full_unstemmed | Geothermal potential and genetic mechanisms of the geothermal system in the mountainous area on the northern margin of north china |
| title_short | Geothermal potential and genetic mechanisms of the geothermal system in the mountainous area on the northern margin of north china |
| title_sort | geothermal potential and genetic mechanisms of the geothermal system in the mountainous area on the northern margin of north china |
| url | https://doi.org/10.1177/01445987211050688 |
| work_keys_str_mv | AT fengliu geothermalpotentialandgeneticmechanismsofthegeothermalsysteminthemountainousareaonthenorthernmarginofnorthchina AT guilingwang geothermalpotentialandgeneticmechanismsofthegeothermalsysteminthemountainousareaonthenorthernmarginofnorthchina AT weizhang geothermalpotentialandgeneticmechanismsofthegeothermalsysteminthemountainousareaonthenorthernmarginofnorthchina AT yizuoshi geothermalpotentialandgeneticmechanismsofthegeothermalsysteminthemountainousareaonthenorthernmarginofnorthchina AT chenyue geothermalpotentialandgeneticmechanismsofthegeothermalsysteminthemountainousareaonthenorthernmarginofnorthchina AT baonadou geothermalpotentialandgeneticmechanismsofthegeothermalsysteminthemountainousareaonthenorthernmarginofnorthchina |