Quantitative assessment of calcite scaling of a high temperature geothermal well in the Kangding geothermal field of Eastern Himalayan Syntax
文献类型：期刊论文
| 作者 | Li, Yiman1,4; Pang, Zhonghe1,2,4; Galeczka, Iwona Monika3 |
| 刊名 | GEOTHERMICS
 |
| 出版日期 | 2020-09-01 |
| 卷号 | 87页码:11 |
| 关键词 | Calcite scaling Geothermal system Western Sichuan Plateau Eastern Himalayan syntax Boiling depth |
| ISSN号 | 0375-6505 |
| DOI | 10.1016/j.geothermics.2020.101844 |
| 英文摘要 | High temperature geothermal systems in China are mainly located along the Himalayan belt and one of the main problems during production is calcite scaling. This paper presents a quantitative assessment of calcite scaling and possible removal and prevention methods for the Kangding geothermal field in the Western Sichuan Plateau, as an example. Reservoir fluid composition is reconstructed based on geochemical processes that may take place from reservoir to surface. Results show that the fluid is HCO3 center dot Cl-Na or Cl center dot HCO3-Na type with a temperature of 259-283 degrees C. It's over-saturated with respect to calcite in both surface and reservoir conditions but under-saturated to quartz and amorphous silica, indicating that the calcite scaling will be a problem. For well BH6, the fluid pH is 5.63 at reservoir conditions and the steam fraction at the wellhead is about 6.0 %. Adiabatic boiling calculation indicates that from reservoir to surface conditions, CO32- and CaCO3 concentrations in the fluid keep increasing and the fluid evolves to become over-saturated with respect to calcite and the saturation index is higher than 0.5 and calcite precipitates in the pipeline. The boiling depth is estimated to be about 150 m from the wellhead which can provide a guide for scaling depth determination. The calcite scale quantity is calculated to be 151 - 300 kg or a thickness of 0-2.94 cm according to the pumping test, consistent with what has been observed. Calcite scale can be removed mechanically or prevented by injecting chemical inhibitor as well as thermodynamic methods (including injecting acid, CO2, cold water and putting the feeding pump below the boiling depth). Counter-measures should be chosen based on the mode of utilization and its cost. For well BH6 that is planned to be used for power generation, chemical inhibition may be the choice. |
| WOS关键词 | HEAT-FLOW DATA ; AQUEOUS SPECIATION ; CONTINENTAL AREA ; SOLUBILITY ; ARAGONITE ; KINETICS ; SYSTEM ; COMPILATION ; TECTONICS ; WATERS |
| 资助项目 | National Key R&D Program of China[2019YFC0604901] ; National Natural Science Foundation of China[41430319] |
| WOS研究方向 | Energy & Fuels ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000551469800031 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/97580]  |
| 专题 | 地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室 |
| 通讯作者 | Pang, Zhonghe |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.ISOR, Grensasvegi 9, IS-108 Reyjavik, Iceland 4.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Yiman,Pang, Zhonghe,Galeczka, Iwona Monika. Quantitative assessment of calcite scaling of a high temperature geothermal well in the Kangding geothermal field of Eastern Himalayan Syntax[J]. GEOTHERMICS,2020,87:11. |
| APA | Li, Yiman,Pang, Zhonghe,&Galeczka, Iwona Monika.(2020).Quantitative assessment of calcite scaling of a high temperature geothermal well in the Kangding geothermal field of Eastern Himalayan Syntax.GEOTHERMICS,87,11. |
| MLA | Li, Yiman,et al."Quantitative assessment of calcite scaling of a high temperature geothermal well in the Kangding geothermal field of Eastern Himalayan Syntax".GEOTHERMICS 87(2020):11. |
入库方式： OAI收割
来源：地质与地球物理研究所
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