孙龙德,金玮,付百舟,王继平,冯子辉,张居和
SUN Longde,JIN Wei,FU Baizhou,WANG Jiping,FENG Zihui,ZHANG Juhe

• 1:多资源协同陆相页岩油绿色开采全国重点实验室
• 2:怀柔国家实验室
• 3:中国石油天然气集团有限公司
• 4:黑龙江省陆相页岩油重点实验室

摘要(Abstract)：

陆相纹层状页岩微观含油性、油气富集机理及分布特征一直是地质家关注的热点。以松辽盆地古龙纹层状页岩油为例，从11口典型页岩油井中采集99件样品，采用页岩薄片制备与激光共聚焦三维重建、显微镜观察、场发射电镜及环境扫描电镜等技术相结合的方法，系统研究了纹层状页岩油赋存状态、分布特征与纹层类型、储集空间、油气含量及轻重组成之间的配置关系。结果表明：纹层状页岩油富集受纹层组合类型控制，分为页理调整富集、原位分散分布、孔隙分异聚集、裂缝运移富集4种赋存模式，赋存形式包括饱和状、浸染状、油膜状、封闭状4种状态，其中页理调整富集、孔隙分异聚集、裂缝运移富集型页岩油存在微运移现象，有利于页岩油的流动、富集及开采；古龙凹陷中部R_o>1.2%区域纹层状页岩油形成条件有利，其中Q_1―Q_4、Q_5―Q_6、Q_7―Q_9油层页岩油分别以页理调整富集、原位分散分布、孔隙分异聚集模式为主，油田开采中需要考虑不同的工艺措施；三肇凹陷0.9%Microscopic oil-bearing property, oil and gas enrichment mechanism and distribution characteristics of continental laminated shale have long been hotspots for geologists. Taking Gulong laminated shale oil in Songliao Basin as an example, 99 samples are collected from 11 typical shale oil wells. Integrated technical methods of shale thin section preparation, laser confocal microscopy and 3D reconstruction, microscopic observation, field emission electron microscopy and environmental scanning electron microscopy are used to systematically study the occurrence state, distribution characteristics of laminated shale oil and their configuration relationships with lamellation types, reservoir pore spaces, oil and gas content and light/heavy oil composition. The results show that laminated shale oil enrichment is controlled by laminae combination types, exhibiting 4 occurrence patterns of lamellation adjusted-enrichment, in-situ dispersed distribution, pore differentiation-aggregation, and fracture-migration enrichment. The occurrence form include 4 states: saturated, disseminated, oil film and sealed. Among them, micro-migration is observed in shale oil with lamellation adjusted-enrichment, pore differentiation-aggregation and fracturemigrated enrichment, which is conducive to the flow, enrichment and production of shale oil. In central Gulong Sag(R_o>1.2%), favorable conditions exist for laminated shale oil accumulation. Shale oil accumulation in reservoirs Q_1-Q_4, Q_5-Q_6 and Q_7-Q_9 are mainly lamellation adjusted-enrichment, in-situ dispersed distribution and pore differentiation-aggregation, requiring various techniques for oilfield production. In Sanzhao Sag(0.9%

关键词(KeyWords)： 松辽盆地;青山口组;古龙页岩油;纹层状页岩油;轻重比;纳米级;微观赋存模式
Songliao Basin;Qingshankou Formation;Gulong shale oil;laminated shale oil;light/heavy ratio;nano-scale;microscopic occurrence pattern

Abstract:

Keywords:

基金项目(Foundation): 中国石油天然气股份有限公司重大科技专项“大庆古龙页岩油勘探开发理论与关键技术研究”（2021ZZ10）

作者(Author): 孙龙德,金玮,付百舟,王继平,冯子辉,张居和
SUN Longde,JIN Wei,FU Baizhou,WANG Jiping,FENG Zihui,ZHANG Juhe

DOI: 10.19597/J.ISSN.1000-3754.202509034

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