郭天旭;任收麦;包书景;陈相霖;原园;周志;王胜建;

• 1:中国地质调查局油气资源调查中心
• 2:中国地质调查局非常规油气地质重点实验室
• 3:中国科学院地质与地球物理研究所
• 4:中国地质调查局

摘要(Abstract)：

页岩中吸附气含量是页岩总含气量中的重要组成部分。页岩吸附特性及其影响因素研究对于预测页岩总含气量及评价页岩气资源潜力具有重要的意义。柴达木盆地北缘侏罗系大煤沟组为一套湖相暗色泥页岩,分布广泛,有机碳含量高,已钻探获得页岩气发现。为研究这套泥页岩的吸附特征和影响因素,选取包括柴页1井岩心在内的40件泥页岩样品进行了有机地球化学、储层性能、岩石矿物学和含气量等一系列实验测试,分析了泥页岩有机碳含量等参数对吸附能力的影响。结果表明研究区大煤沟组泥页岩最大甲吸附气含量随压力增大而吸附能力逐渐增强,至一定程度达到饱和后不再增加;泥页岩中的有机碳、氯仿沥青"A"和黏土矿物可有效吸附和溶解甲烷,对吸附能力产生积极影响;在页岩热演化程度总体偏低的情况下,液态烃和可溶有机质大量存在并占据孔隙空间从而降低了泥页岩的比表面积,对其吸附能力产生消极影响。

关键词(KeyWords)： 吸附特征;影响因素;陆相页岩;侏罗系;柴达木盆地

Abstract:

Keywords:

基金项目(Foundation): 中国地质调查局项目(1212011221045);; 国家科技重大专项(2016ZX05034-002)

作者(Author): 郭天旭;任收麦;包书景;陈相霖;原园;周志;王胜建;

Email:

DOI:

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