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| 马朗凹陷芦草沟组页岩油储层成岩演化与 溶蚀孔隙形成机制 |
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吴林钢1,李秀生1,郭小波2,罗权生3,刘晓健2,陈旋3,姜振学2
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(1.中国石油大学石油工程学院，北京102249;2.中国石油大学地球科学学院,北京102249;3.中国石油吐哈油田勘探开发研究院，新禮哈密839009)
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| 摘要: |
| 通过场发射环境扫描电子M微镜、X射线衍射等试验手段，对5塘湖盆地马朗凹陷芦草沟组页岩油储层成岩演 化特征与溶蚀孔隙形成机制进行研究<> 结果表明:二叠系芦草沟组泥页岩为低孔、特低渗储层，主要经历了压实、胶 结、交代以及溶解等成耑作用;有机质热演化与无机矿物成畀演化在时空上相对应，有机质生烃高峰、孔隙度高值 区、伊利石含M卨值冈在同一深度出现;生烃过程形成的酸性流体溶解不稳定矿物，形成溶蚀孔隙，同时为伊利石化 提供JC;矿物溶蚀孔和有机质残留孔是贞岩油重要的储集空间，伊利石化n〖加速钾长石溶解，并造成矿物的体积收 缩，对储集空间的形成具有明显促进作用;泥页岩中溶蚀孔隙的形成与有机质生烃、油气初次运移同步。 |
| 关键词: 页岩油 储层 成岩演化 溶蚀孔隙 形成机制 马朗凹陷 |
| DOI：10.3969/j.issn.1673-5005.2012.03.007 |
| 分类号:TE 122.2 |
| 基金项目:国家“973”重点基础研究发展规划项目(2011CB201105) |
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| Diagenetic evolution and formation mechanism of dissolved pore of shale oil reservoirs of Lucaogou formation in Malang sag |
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WU Lin-gang1,LI Xiu-sheng1,GUO Xiao-bo2,LUO Quan-sheng3,LIU Xiao-jian2,CHEN Xuan3,JIANG Zhen-xue2
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(1. College of Petroleum Engineering in China University of Petroleum, Beijing 102249, China;2. College of Geosciences in China Unwersity of Petroleum, Beijing 102249, China;3. Research Institute of Exploration and Development of Tuha Oilfield，PetroChina, Hand 839009, China)
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| Abstract: |
| Based on the analysis of field emission ESEM，X-ray diffraction，the characteristics of diagenetic evolution and the formation mechanism of dissolved pores of Lucaogou formation shale oil reservoir in Malang sag were systematically researched. The results show that Permian Lucaogou formation shale oii reservoir is characterized by low porosity and ultralow-permeability. Tlie reservoir mainly experienced compaction，dissolution，cementation and metasomatism. Organic matter and inorganic mineral
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| Key words: shale oil reservoirs diagenetic evolution dissolved pores formation mechanism Malang sag |
