济阳坳陷第一轮页岩油探井“失利”原因剖析
李志明 , 孙中良 , 黎茂稳 , 曹婷婷 , 李政 , 刘鹏 , 蒋启贵 , 钱门辉 , 陶国亮
地球科学 ›› 2023, Vol. 48 ›› Issue (01) : 143 -157.
济阳坳陷第一轮页岩油探井“失利”原因剖析
Cause Analyses of “Failure” for First Round Shale Oil Exploration Wells in Jiyang Depression
,
济阳坳陷沙三下和沙四上亚段富有机质泥页岩层系页岩油形成条件优越,但第一轮页岩油勘探开发探索阶段实施的4口评价井和4口系统取心井在优选的“有利层段”进行试油试采均未获得规模突破.为了揭示济阳坳陷第一轮页岩油探井“失利”的原因,系统剖析了4口系统取心井取心段的含油性、储集性、可压性与页岩油可动性特征以及针对4口系统取心优选的“有利层段”和4口评价井实施的工程工艺技术情况.结果表明,NY1、LY1取心段含油性、储集性、可压性与页岩油可动性均好,优选的“有利层段”合理,而FY1和L69井取心段含油性、储集性和页岩油可动性较NY1、LY1取心段明显偏低并且优选的“有利层段”不正确.4口评价井“失利”主要原因是水平井段富有机质泥页岩成熟度低和压裂工艺适应性差;系统取心井NY1和LY1井优选“有利层段”“失利”主要与仅采用了常规油气试油试采工具进行联测有关,FY1和L69井优选“有利层”“失利”则既与“有利层”优选失误有关,也与仅采用了常规油气试油试采工具进行联测有关.
页岩油探井 / “四性”特征 / “有利层段” / “失利” / 济阳坳陷 / 石油地质学
shale oil exploration well / oiliness, reservoir property, compressibility of shale and mobility of shale oil / “favorable layer” / “failure” / Jiyang Depression / petroleum geology
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国家自然科学基金项目(42090022)
中国石化科技开发部项目(P20049-1)
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