| 湘西北地区震旦纪陡山陀组页岩气储层特征 |
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| 引用本文： | 李国亮,王先辉,罗鹏,杨俊,刘天一.湘西北地区震旦纪陡山陀组页岩气储层特征[J].中国煤炭地质,2014(6):5-9. |
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| 作者姓名： | 李国亮 王先辉 罗鹏 杨俊 刘天一 |
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| 作者单位： | 湖南省地质调查院,湖南长沙410116 |
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| 基金项目： | 中央地质矿产调查评价专项地勘基金项目（201203084）. |
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| 摘 要： | 对湘西北下震旦统陡山陀组页岩气有利层位进行相应的地球化学、物性特性分析,并结合地质保存条件等因素对含气页岩层进行了综合评价,得到区内页岩主要物化指数:TOC为0.52%~6.79%,均值为2.25%;Ro为2.38%~2.87%,均值为2.56%,干酪根类型为Ⅰ型;孔隙度为0.6%~8.7%,平均为3.9%,渗透率均小于0.04×10-3μm2,属低孔低渗类型。页岩埋深主要在2000~5000m,且有效厚度基本大于20m,具有页岩气成藏条件,页岩气勘探开发前景良好。
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| 关 键 词： | 陡山陀组 页岩气 保存条件 TOC 埋深 湘西北 |
Shale Gas Reservoir Characteristics in Sinian Doushantuo Formation,Northwestern Hunan |
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| Institution: | Li Guoliang, Wang Xianhui and Luo Peng (Hunan Provincial Geological Survey, Changsha, Hunan 410116) |
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| Abstract: | Corresponding geochemical, physical property analyses have been carried out for favorable shale gas horizons in lower Sinian Doushantuo Formation in northwestern Hunan. The comprehensive evaluation on gas-bearing shale strata combined with factors includ-ing geological hosting condition has gotten main physical and chemical indices as follows： TOC 0.52%-6.79%, average 2.25%; Ro 2.38%-2.87%, average 2.56%;kerogen type I;porosity 0.6%-8.7%, average 3.9%;permeability all less than 0.04×10^-3μm^2, thus be-longs to low porosity, permeability type. Buried depth of shale strata is mainly within 2 000~5 000m, effective thickness basically larger than 20m thus provided with shale gas reservoiring condition, and excellent shale gas exploration and exploitation prospect. |
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| Keywords: | Doushantuo Formation shale gas hosting condition TOC buried depth northwestern Hunan |
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