中国石油大学学报（自然科学版）2017，Vol.41Issue(6)：1-8,8.DOI:10.3969/j.issn.1673-5005.2017.06.001
有机质在页岩沉积成岩过程及储层形成中的作用
Significances of organic matters on shale deposition, diagenesis process and reservoir formation
摘要
Abstract
Based on well cores, microscopic sections, scanning electron microscope samples and the relative analysis data, the significances of organic matters on deposition process, diagenesis and shale reservoir were systematically studied. The study shows that organic matters are conducive to the precipitation of calcium carbonate, mainly in terms of benthic stick-knot, planktonic bonding and biological particles to form carbonate. Organic matters can promote the formation of the organic-iron complex, and the micro environment formed during organic matters thermal evolution can promote metasomatism of car-bonate minerals by pyrite. During the burial, organic matters produce organic acids, which may cause the dissolution and re-crystallization of calcite, and further control the calcite crystal size and conformation. Organic matters can generate abundant storage pores directly or indirectly, which is very important for the formation of pore networks in the shale and for the reser-voir physical properties. The analyses show that the shale oil production is closely related to the TOC content, which increa-ses simultaneously with the TOC content. The study suggests that for the shale reservoir formation and industry capacity, the lower limit of TOC content is 2%, and an effective thickness of organic-rich shale needs to be reached. In addition, the min-eral composition, lithofacies, burial depth, Ro also need to be considered.关键词
有机质/埋藏演化/储层评价/页岩油/湖相页岩Key words
organic matters/burial evolution/reservoir evaluation/shale oil and gas/lacustrine shale分类
能源科技引用本文复制引用
梁超,吴靖,姜在兴,操应长,刘淑君,逄淑伊..有机质在页岩沉积成岩过程及储层形成中的作用[J].中国石油大学学报（自然科学版）,2017,41(6):1-8,8.基金项目
国家自然科学基金项目(41602142) （41602142）
国家科技重大专项(2016ZX05006-007,2016ZX05006-003) （2016ZX05006-007,2016ZX05006-003）
中国博士后基金项目(2015M582165,2017T100523) （2015M582165,2017T100523）
山东省自然科学基金项目(ZR2016DB16) （ZR2016DB16）
