| 张雪,刘建朝,李荣西,王行运,翁凯.渭河盆地地热水溶气资源分布规律[J].地质找矿论丛,2014,29(3):392-399 |
| 渭河盆地地热水溶气资源分布规律 |
| The distribution of gas soluble in geothermal water in Weihe basin |
| 投稿时间：2014-03-17 修订日期：2013-06-13 |
| DOI：10.6053/j.issn.1001-1412.2014.03.013 |
| 中文关键词: 富氦水溶气 可燃水溶气 资源分布有利区 渭河盆地 |
| 英文关键词:helium-rich gas soluble in water combustible gas soluble in water favorable areas distributed with resource Weihe basin |
| 基金项目:中国地质调查局项目（编号：12120113040200）资助。 |
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| 中文摘要: |
| 渭河盆地地热水溶气资源丰富，但成分、成因、分布特征复杂。通过选择位于不同构造单元，不同完井深度的地热水井进行地热水及天然气样品的采集并送样分析，研究地热水特征，天然气的组分、成因及水气关系，结合天然气聚集成藏因素分析，对气体赋存的有利区域进行预测。研究表明，渭河盆地地热水化学类型相对复杂，地层温度及压力对天然气在水中的溶解度影响较大；盆地中最具有工业价值的天然气组分为壳源氦气及生物成因可燃气；根据气体源岩的分布，储盖组合特征，结合影响水溶气富集的因素，对氦气富集有利区和可燃气有利区进行了预测。 |
| 英文摘要: |
| The gas soluble in geothermal water is rich in Weihe basin but complicated in composition, origin and distribution. Samples of geothermal water and natural gas are collected from different tectonic units and wells drilled to varied depth and analyzed to research characteristics of the geothermal water, components and genesis of the natural gas and relation of the water to the gas. Combined with analysis of the gas accumulation and formation of the reservoir favorite areas of the gas reservoir are predicted. The research shows that geothermal water in Weihe basin is complicated in chemical types and that temperature and pressure of the strata in Weihe basin play more roles in solubility of the gas in the water. In Weihe basin helium gas derived from the crust and the combustible biogenic gas are of industrial value. According to the distribution of gas source rock and reservoir-cap assemblages and influence factors of natural gas accumulation the author deduced the favorable areas of helium and the combustible gas. |
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