页岩中多元气体竞争吸附特征研究现状及展望
Characteristics of competitive adsorption of multicomponent gases on shales: Status and prospects
查看参考文献72篇
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文摘
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吸附气是页岩气的重要组成部分,页岩气吸附机理的研究及吸附量的计算是页岩气研究的重点内容。在某些地质条件下,页岩气组成复杂,不仅包含甲烷,还有一定量的乙烷等湿气以及氮气和二氧化碳等非烃气体,因此有必要针对页岩开展多元气体竞争吸附研究。本文在前人研究基础上,分析页岩中多元气体竞争吸附的机理,介绍扩展Langmuir方程、理想吸附溶液理论(IAST)和晶格密度泛函理论(Lattice DFT)等3种竞争吸附预测模型,探讨有机质含量、页岩组成、孔隙结构、成熟度、气体组成、含水率和压力等影响页岩中多元气体竞争吸附的因素,阐述页岩中多元气体竞争吸附的研究现状并指出其中存在的问题与难点,并对页岩中多元气体竞争吸附研究的发展趋势和需要解决的问题进行探讨。 |
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其他语种文摘
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Adsorbed gas is a major component of shale gas, therefore, it is important to determine the mechanism of gas adsorption in shales and their associated gas adsorption capacity when evaluating shale gas resources. Given that the composition of shale gas is quite complex in some geological conditions, the competitive adsorption of multicomponent gases in shales needs to be unambiguously illustrated. Based on related and currently available literature, the present study investigates the mechanism involved in multicomponent gas adsorption in shales and provides a brief introduction to three mathematical models used to illustrate competitive adsorption: the extended Langmuir model, the ideal adsorbed solution theory (IAST), and the lattice density functional theory (Lattice DFT). Controlling factors, such as TOC content, shale composition, pore structure, maturity, gas composition, moisture content, and pressure, which influence the competitive adsorption of multicomponent gases in shales are discussed. In summary, this study provides some new insights into multicomponent gas adsorption mechanisms in shales, suggests potential problems related to multicomponent gas adsorption, and outlines future work required in overmature shale gas exploration. |
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来源
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地球化学
,2018,47(3):229-239 【核心库】
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DOI
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10.19700/j.0379-1726.2018.03.001
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关键词
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竞争吸附
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页岩气
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特征
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模型
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展望
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地址
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中国科学院广州地球化学研究所, 有机地球化学国家重点实验室, 广东, 广州, 510640
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中国科学院大学, 北京, 100049
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语种
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中文 |
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文献类型
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综述型 |
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ISSN
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0379-1726 |
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学科
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地质学 |
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基金
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国家自然科学基金
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中国科学院战略性先导科技专项
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文献收藏号
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CSCD:6243615
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