宜良地热田水化学特征分析与研究 |
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引用本文: | 张艳花,徐世光,巴俊杰,李晨晨,童文辉.宜良地热田水化学特征分析与研究[J].矿产与地质,2016(5):837-841. |
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作者姓名: | 张艳花 徐世光 巴俊杰 李晨晨 童文辉 |
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作者单位: | 1. 昆明理工大学国土资源工程学院,云南 昆明,650093;2. 昆明理工大学国土资源工程学院,云南 昆明 650093; 云南地矿工程勘察集团公司,云南 昆明 650041 |
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摘 要: | 水化学特征不仅应用于分析地下水水质的时空变化规律,而且还提供地下水水动力环境信息。水化学分析方法已成为对探索地热田成因、地下水补给来源等常用的研究方法。基于近些年的研究资料,综合分析热储层结构特征和水化学特征,认为宜良地热田为层状热储型中低温地热田,其热储层为震旦系灯影组。研究热储层流体的化学分布特征以及热流体的化学成分与温度的关系等,用化学温标核算了热储层温度,认为K-Mg温标更适用于中低温地热田热储温度的估算。地热水水化学特征等基本地质特征可作为地热田规划和开发的理论基础。
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关 键 词: | 地热田 热储层 水化学特征 化学温标 宜良 云南 |
An analysis of hydrochemical characteristics of Yiliang geothermal field |
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Abstract: | Hydrochemical characteristic is a useful information which not only can be applied in the analysis of spatio-temporal variation rules of groundwater quality,but also indicates the groundwater hydrodynamic en-vironment.The hydrochemical analysis method has become a commonly used research technique of exploring genesis of geothermal field and source of groundwater recharge.Based on the research data in recent years, the authors conducted a integrated analysis on the structural characteristics and hydrochemical characteristics of thermal reservoir,and concluded that Yiliang geothermal field was a stratabound thermal reservoir type low-medium temperature geothermal field.The thermal reservoir is in Dengying Formation of Sinian sys-tem.Then the authors studied the chemical distribution characteristics of thermal reservoir fluids and the re-lationship between fluid chemical composition and temperature.By using chemical thermometric scale to ver-ify the temperature of the thermal reservoir,it appears that K-Mg thermometric scale is more suitable for the estimate of thermal reservoir temperature in low-medium temperature geothermal field.Basic geological characteristics including geochemical characteristics of geothermal water can be used as the theoretical basis of the planning and development of geothermal field. |
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Keywords: | geothermal field thermal reservoir hydrochemical characteristic chemical thermometric scale Yiliang Yunnan |
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