Source and influencing factors of metasilicic acid in mixed geothermal waters

IF 3.5 2区工程技术 Q3 ENERGY & FUELS

Geothermics Pub Date : 2024-07-05 DOI:10.1016/j.geothermics.2024.103098

Yanqiu Wu , Xun Zhou

引用次数: 0

Abstract

The content of metasilicic acid in geothermal water is usually high. In this paper, the hydrochemical composition of hot springs and geothermal wells from different lithologic aquifers was studied by End-member mixing analysis, and the source and influencing factors of the H₂SiO₃ concentration in geothermal water were revealed. The results show that the H₂SiO₃ concentration in geothermal water is almost independent of the lithology of the surrounding rock at surface of hot springs and geothermal wells. Temperature is an important control factor in the H₂SiO₃ concentration of hot springs and geothermal well waters. The metasilicic acid in geothermal water mainly comes from the geothermal source water, and the mixing of a large proportion of cold water will dilute the metasilicic acid, resulting in a relatively large variation in hot springs and geothermal well waters. The mixing process evaluation gives a good overview of the fluid flow (reservoir temperature and circulation depth) within the region.

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混合地热水中偏硅酸的来源和影响因素

地热水中偏硅酸的含量通常较高。本文采用端元混合分析法研究了不同岩性含水层温泉和地热井的水化学组成，揭示了地热水中 H2SiO3 浓度的来源和影响因素。结果表明，地热水中 H2SiO3 的浓度几乎不受温泉和地热井地表围岩岩性的影响。温度是温泉和地热井水 H2SiO3 浓度的重要控制因素。地热水中的偏硅酸主要来自地热源水，大量冷水的混入会稀释偏硅酸，导致温泉和地热井水的偏硅酸浓度变化相对较大。通过混合过程评估，可以很好地了解区域内的流体流动情况（储层温度和循环深度）。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Geothermics 工程技术-地球科学综合

CiteScore

7.70

自引率

15.40%

发文量

237

审稿时长

4.5 months

期刊介绍： Geothermics is an international journal devoted to the research and development of geothermal energy. The International Board of Editors of Geothermics, which comprises specialists in the various aspects of geothermal resources, exploration and development, guarantees the balanced, comprehensive view of scientific and technological developments in this promising energy field. It promulgates the state of the art and science of geothermal energy, its exploration and exploitation through a regular exchange of information from all parts of the world. The journal publishes articles dealing with the theory, exploration techniques and all aspects of the utilization of geothermal resources. Geothermics serves as the scientific house, or exchange medium, through which the growing community of geothermal specialists can provide and receive information.