松辽盆地三肇凹陷青山口组一段泥页岩岩石学特征及岩相划分——以松页油3井为例

doi:10.13686/j.cnki.dzyzy.2021.03.013

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摘要以松辽盆地三肇凹陷松页油3井青山口组一段泥页岩为例，对其沉积构造、有机质丰度及矿物组成等岩石学特征关系进行研究.结果表明，三肇凹陷青一段泥页岩发育块状构造和纹层状构造两种沉积构造；TOC含量介于0.50%~6.82%，平均值为3.16%，S₁+S₂介于2.01×10^-3~49.41×10^-3，平均值为23.02×10^-3，总体为好-最好的烃源岩；矿物组成以长英质矿物为主，黏土矿物次之，碳酸盐矿物、黄铁矿含量较低.基于岩石学特征研究，按照"有机质丰度-岩石沉积构造-矿物组成"分类标准，将青山口组一段划分为9类岩相，其中高有机质纹层状长英质泥页岩岩相具有较好的生烃潜力，是三肇凹陷页岩油勘探的最有利的岩相类型.

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	李士超
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	柳波
	姚玉来
	肖飞
	白龙辉
	黄一鸣
	李昂
	张丽艳

关键词 ：三肇凹陷, 青山口组一段, 沉积构造, 有机碳含量, 矿物组成, 岩相

Abstract：Taking the shale from the first member of Qingshankou Formation in SYY-3 well of Sanzhao sag in Songliao Basin as an example, the paper studies the petrological characteristics, including sedimentary structure, organic matter abundance and mineral composition. The results show that the shale develops massive structure and laminated structure are, with TOC of 0.50%-6.82% (averagely 3.16%) and S₁+S₂ of 2.01×10^-3-49.41×10^-3 (averagely 23.02×10^-3), generally belonging to good-best source rock. The mineral composition is mainly felsic mineral, followed by clay, with low content of carbonate and pyrite. Based on the petrological characteristics, the first member of Qingshankou Formation can be divided into 9 types of lithofacies by the classification criteria of organic matter abundance-sedimentary structure-mineral composition, among which the laminated felsic shale with high TOC has good hydrocarbon generation potential, serving as the most favorable lithofacies for shale oil exploration in Sanzhao sag.

Key words： Sanzhao sag first member of Qingshankou Formation sedimentary structure TOC mineral composition lithofacies

收稿日期: 2021-03-05

PACS:	P618.13
	P586

基金资助:中国地质调查局项目"松辽盆地北部页岩油战略调查"（DD20190114）；"大庆齐家-古龙地区页岩油气战略调查与评价"（DD20179613）.

作者简介: 李士超(1985-),男,硕士,高级工程师,从事油气基础地质调查及页岩油研究工作,通信地址辽宁省沈阳市皇姑区黄河北大街280号,E-mail//277983674@qq.Com

引用本文:

李士超, 杨建国, 柳波, 姚玉来, 肖飞, 白龙辉, 黄一鸣, 李昂, 张丽艳. 松辽盆地三肇凹陷青山口组一段泥页岩岩石学特征及岩相划分——以松页油3井为例[J]. 地质与资源, 2021, 30(3): 317-324,295.
LI Shi-chao, YANG Jian-guo, LIU Bo, YAO Yu-lai, XIAO Fei, BAI Long-hui, HUANG Yi-ming, LI Ang, ZHANG Li-yan. PETROLOGY AND LITHOFACIES OF SHALE FROM THE FIRST MEMBER OF QINGSHANKOU FORMATION IN SANZHAO SAG, SONGLIAO BASIN: A Case Study of SYY-3 Well. GEOLOGY AND RESOURCES, 2021, 30(3): 317-324,295.

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http://manu25.magtech.com.cn/Jweb_dzyzy/CN/10.13686/j.cnki.dzyzy.2021.03.013 或 http://manu25.magtech.com.cn/Jweb_dzyzy/CN/Y2021/V30/I3/317

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