高波,张刘平,冯子辉,陈凤祥,李照阳,邵红梅,黄晓天
GAO Bo,ZHANG Liuping,FENG Zihui,CHEN Fengxiang,LI Zhaoyang,SHAO Hongmei,HUANG Xiaotian

• 1:多资源协同陆相页岩油绿色开采全国重点实验室
• 2:中国石油大庆油田有限责任公司勘探开发研究院
• 3:中国科学院地质与地球物理研究所油气资源研究重点实验室
• 4:北京大学能源研究院

摘要(Abstract)：

为查明古龙页岩中轻质油的分布，应用激光共聚焦冷冻观测技术，系统分析了松辽盆地的原油样品，建立了反射光-长短波荧光多重扫描图R/G强度比与原油密度之间的关系和古龙页岩中轻质油、中质油和重质组分（包括重质油、胶质沥青质和生烃母质）的原位观测方法。结果表明：松辽盆地古龙凹陷S18井青山口组页岩油多呈不规则形状、斑块状和星点状；轻质油的含量明显高于中质油和重质组分，轻/（中+重）面积比的平均值高达8.6。在观测井段，轻质油主要富集于纹层状-层状页岩。根据轻质油和轻/（中+重）面积比的分布情况，评价了油层组。总体上，该井Q_9油层组优于Q_6―Q_7油层组，Q_6―Q_7油层组又优于Q_1―Q_2油层组。通过系统观测与研究页岩中轻质油的分布，可为优化勘探开发目标，优选水平井压裂井段提供新的重要依据。
In order to identify the distribution of light oil in Gulong shale,laser scanning confocal freezing observation technology is used to systematically analyze oil samples from Songliao Basin.The relationship between R/G intensity ratio of reflection light-long/shortwave fluorescence multiple scanning images and oil density is established,as well as an in-situ observation method for light oil,medium oil and heavy oil components(including heavy oil,resin asphaltene and hydrocarbon-generating parent material) in Gulong shale.The results show that shale oil in Qingshankou Formation of Well S18 in Gulong Sag of Songliao Basin mostly presents to be irregular,patchy and sporadic.The content of light oil is significantly higher than that of medium oil and heavy components,with an average area ratio light/(medium+heavy) oil up to 8.6.In observed well intervals,light oil is mainly enriched in laminated-layered shale.Based on the area ratio distribution of light oil and the light/(medium+heavy),reservoir members are evaluated.In general,Q_9 reservoir member in this well is superior to Q_6-Q_7 reservoir members,and Q_6-Q_7reservoir members are superior to Q_1-Q_2 reservoir members.Systematic observation and study of the distribution of light oil in the shale provide new important basis for optimizing exploration and development targets and selecting fracturing horizontal well intervals.

关键词(KeyWords)： 页岩油;轻质油;激光扫描共聚焦显微镜;冷台;含油性;岩性;松辽盆地
shale oil;light oil;laser scanning confocal microscope;cold stage;oil-bearing properties;lithology;Songliao Basin

Abstract:

Keywords:

基金项目(Foundation): 黑龙江省重点研发计划“多资源协同陆相页岩油绿色开采全国重点实验室”（JD2023GJ02）;; 黑龙江省揭榜挂帅科技项目“古龙页岩油碳同位素分馏效应研究”（DQYT-2022-JS-753）;; 中国石油-北京大学基础研究项目“中低成熟度页岩油超临界水改质研究”（22-2-1）

作者(Author): 高波,张刘平,冯子辉,陈凤祥,李照阳,邵红梅,黄晓天
GAO Bo,ZHANG Liuping,FENG Zihui,CHEN Fengxiang,LI Zhaoyang,SHAO Hongmei,HUANG Xiaotian

DOI: 10.19597/J.ISSN.1000-3754.202410038

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