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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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页岩纳米孔隙分形特征
Keywords: 页岩,孔隙结构,分形特征,氮气吸附,吸附,渗流
Abstract:
？以氮气分子为探测介质，采用氮气吸附分形分析方法研究了页岩孔隙结构及其不规则性，计算了页岩纳米孔隙分形维数，给出了分形维数与有机碳含量、页岩组成、孔隙结构参数之间的关系曲线，讨论了分形维数对气体吸附和渗流的影响。结果表明，页岩纳米孔隙具有明显的分形特征。分形维数与有机碳含量、微孔发育程度有关。有机碳含量越高，分形维数越大。分形维数反映了页岩微孔的发育程度，微孔越发育，平均孔径越小，比表面积越大，分形维数越大。分形维数对气体的赋存和运移有着不同的影响，分形维数越大，孔隙结构趋于复杂，这有利于气体吸附存储，但不利于气体渗流。
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