Mineral Reaction Kinetics during Aciding of the Gaoyuzhuang Carbonate Geothermal Reservoir in the Xiong’an New Area, Northern China
There are abundant geothermal resources in the Xiong’an New Area, China. Drilling has revealed a greater potential in the deep Gaoyuzhuang geothermal reservoir. However, the reservoir required acidification to increase its water production. In this study, three types of core samples with different m...
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MDPI AG
2022-10-01
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| Online Access: | https://www.mdpi.com/2073-4441/14/19/3160 |
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| author | Gaofan Yue Xi Zhu Guiling Wang Feng Ma |
| author_facet | Gaofan Yue Xi Zhu Guiling Wang Feng Ma |
| author_sort | Gaofan Yue |
| collection | DOAJ |
| description | There are abundant geothermal resources in the Xiong’an New Area, China. Drilling has revealed a greater potential in the deep Gaoyuzhuang geothermal reservoir. However, the reservoir required acidification to increase its water production. In this study, three types of core samples with different mineral compositions from different depths in the target boreholes were selected for acid rock reaction experiments at the temperature of 40 °C, 60 °C, 80 °C and 100 °C, and pressure of 30 MPa. The kinetics of the acid rock reaction of the major minerals were modeled based on the transitional state theory. The kinetic parameters were obtained by comparing the modelling and experimental results. The results show that the lithology of the Gaoyuzhuang reservoir is primarily dolomite. The dissolution ratio for 15 wt.% HCl reached 84.1% on average for the rock fragments. Temperature has a significant effect on the dissolution rate of the minerals. In the presence of HCl (acidic mechanism), the reaction rate constants of the dolomite, calcite and illite reached 2.4 × 10<sup>−4</sup> mol/m<sup>2</sup>/s, 5.3 × 10<sup>−1</sup> mol/m<sup>2</sup>/s and 9.5 × 10<sup>−2</sup> mol/m<sup>2</sup>/s, respectively. The results of this study provide the basic parameters for the design and evaluation of field acidizing. |
| first_indexed | 2024-03-09T20:57:54Z |
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| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-09T20:57:54Z |
| publishDate | 2022-10-01 |
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| series | Water |
| spelling | doaj.art-e954002703994169ac785323ba1f04522023-11-23T22:16:41ZengMDPI AGWater2073-44412022-10-011419316010.3390/w14193160Mineral Reaction Kinetics during Aciding of the Gaoyuzhuang Carbonate Geothermal Reservoir in the Xiong’an New Area, Northern ChinaGaofan Yue0Xi Zhu1Guiling Wang2Feng Ma3Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang 050061, ChinaInstitute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang 050061, ChinaInstitute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang 050061, ChinaInstitute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang 050061, ChinaThere are abundant geothermal resources in the Xiong’an New Area, China. Drilling has revealed a greater potential in the deep Gaoyuzhuang geothermal reservoir. However, the reservoir required acidification to increase its water production. In this study, three types of core samples with different mineral compositions from different depths in the target boreholes were selected for acid rock reaction experiments at the temperature of 40 °C, 60 °C, 80 °C and 100 °C, and pressure of 30 MPa. The kinetics of the acid rock reaction of the major minerals were modeled based on the transitional state theory. The kinetic parameters were obtained by comparing the modelling and experimental results. The results show that the lithology of the Gaoyuzhuang reservoir is primarily dolomite. The dissolution ratio for 15 wt.% HCl reached 84.1% on average for the rock fragments. Temperature has a significant effect on the dissolution rate of the minerals. In the presence of HCl (acidic mechanism), the reaction rate constants of the dolomite, calcite and illite reached 2.4 × 10<sup>−4</sup> mol/m<sup>2</sup>/s, 5.3 × 10<sup>−1</sup> mol/m<sup>2</sup>/s and 9.5 × 10<sup>−2</sup> mol/m<sup>2</sup>/s, respectively. The results of this study provide the basic parameters for the design and evaluation of field acidizing.https://www.mdpi.com/2073-4441/14/19/3160carbonate geothermal reservoiracid-rock reaction kineticsreaction vessel experimentnumerical simulation |
| spellingShingle | Gaofan Yue Xi Zhu Guiling Wang Feng Ma Mineral Reaction Kinetics during Aciding of the Gaoyuzhuang Carbonate Geothermal Reservoir in the Xiong’an New Area, Northern China Water carbonate geothermal reservoir acid-rock reaction kinetics reaction vessel experiment numerical simulation |
| title | Mineral Reaction Kinetics during Aciding of the Gaoyuzhuang Carbonate Geothermal Reservoir in the Xiong’an New Area, Northern China |
| title_full | Mineral Reaction Kinetics during Aciding of the Gaoyuzhuang Carbonate Geothermal Reservoir in the Xiong’an New Area, Northern China |
| title_fullStr | Mineral Reaction Kinetics during Aciding of the Gaoyuzhuang Carbonate Geothermal Reservoir in the Xiong’an New Area, Northern China |
| title_full_unstemmed | Mineral Reaction Kinetics during Aciding of the Gaoyuzhuang Carbonate Geothermal Reservoir in the Xiong’an New Area, Northern China |
| title_short | Mineral Reaction Kinetics during Aciding of the Gaoyuzhuang Carbonate Geothermal Reservoir in the Xiong’an New Area, Northern China |
| title_sort | mineral reaction kinetics during aciding of the gaoyuzhuang carbonate geothermal reservoir in the xiong an new area northern china |
| topic | carbonate geothermal reservoir acid-rock reaction kinetics reaction vessel experiment numerical simulation |
| url | https://www.mdpi.com/2073-4441/14/19/3160 |
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