大庆石油地质与开发2026，Vol.45Issue(1)：1-8,8.DOI:10.19597/J.ISSN.1000-3754.202406014
松辽盆地青山口组介壳滩的分布特征及控制因素
Distribution characteristics and controlling factors of shell shoal in Qingshankou Formation of Songliao Basin
陆加敏 1杨懋新 2李军辉 1刘英 2邵东然 2邱晗 2赵建芝2
作者信息
- 1. 中国石油大庆油田有限责任公司勘探开发研究院,黑龙江 大庆 163712
- 2. 中国石油东方地球物理公司研究院,河北 涿州 072751
- 折叠
摘要
Abstract
In view of the problem of weak research on distribution laws and controlling factors of shell shoals in Qin-gshankou Formation of Songliao Basin,well-seismic joint research method is used to carry out the research from as-pects of well logging and seismic response,vertical and horizontal distribution laws and controlling factors of shell shoals.The results show that shell shoals in Qingshankou Formation of Songliao Basin are mainly distributed in la-custrine mudstone,beach bar sand and sheet sand environment in upper part of Qing1 Member and lower part of Qing2 Member.Shell shoals generally have logging response characteristics of low acoustic time difference,low nat-ural gamma and high resistivity,with lenticular"bright spot"characteristics on seismic profiles,solid circle,el-lipses or irregular lumpy strong-amplitude anomality in seismic amplitude attributes and 3D caving maps,and most-ly show characteristics of certain directional arrangement.Shell shoals are mainly controlled by changes in lake level,paleomorphology and hydro(wind)dynamics.Large lake area and stable water with high lake-surface water level during late Qing1 Member-early Qing2 Member are conducive to the mass reproduction of ostracods,wide and gentle slopes and underwater low uplifts are conducive to the development of shell shoals,and wind-wave action controls the redistribution of shell shoals.The research provides important guiding significance for the study of inter-bedded shale oil reservoirs.关键词
松辽盆地/青山口组/介壳滩/湖平面变化/古地貌/控制因素Key words
Songliao Basin/Qingshankou Formation/shell shoal/lake level changes/paleomorphology/control-ling factors分类
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陆加敏,杨懋新,李军辉,刘英,邵东然,邱晗,赵建芝..松辽盆地青山口组介壳滩的分布特征及控制因素[J].大庆石油地质与开发,2026,45(1):1-8,8.
