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准噶尔盆地吉木萨尔凹陷二叠系芦草沟组不同源储结构页岩生排油实验研究

李二庭 潘越扬 杨光庆 白海枫 马万云 曾溅辉 张宇

李二庭, 潘越扬, 杨光庆, 白海枫, 马万云, 曾溅辉, 张宇. 准噶尔盆地吉木萨尔凹陷二叠系芦草沟组不同源储结构页岩生排油实验研究[J]. 石油实验地质, 2023, 45(4): 705-713. doi: 10.11781/sysydz202304705
引用本文: 李二庭, 潘越扬, 杨光庆, 白海枫, 马万云, 曾溅辉, 张宇. 准噶尔盆地吉木萨尔凹陷二叠系芦草沟组不同源储结构页岩生排油实验研究[J]. 石油实验地质, 2023, 45(4): 705-713. doi: 10.11781/sysydz202304705
LI Erting, PAN Yueyang, YANG Guangqing, BAI Haifeng, MA Wanyun, ZENG Jianhui, ZHANG Yu. Experimental study on hydrocarbon generation and expulsion characteristics of shale with different source-reservoir structures in Lucaogou Formation, Jimsar Sag, Junggar Basin[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2023, 45(4): 705-713. doi: 10.11781/sysydz202304705
Citation: LI Erting, PAN Yueyang, YANG Guangqing, BAI Haifeng, MA Wanyun, ZENG Jianhui, ZHANG Yu. Experimental study on hydrocarbon generation and expulsion characteristics of shale with different source-reservoir structures in Lucaogou Formation, Jimsar Sag, Junggar Basin[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2023, 45(4): 705-713. doi: 10.11781/sysydz202304705

准噶尔盆地吉木萨尔凹陷二叠系芦草沟组不同源储结构页岩生排油实验研究

doi: 10.11781/sysydz202304705
基金项目: 

中国石油科技重大专项 2019E-2601

详细信息
    作者简介:

    李二庭(1988—),男,博士,高级工程师,从事油气地球化学研究。E-mail: lierting@petrochina.com.cn

  • 中图分类号: TE135

Experimental study on hydrocarbon generation and expulsion characteristics of shale with different source-reservoir structures in Lucaogou Formation, Jimsar Sag, Junggar Basin

  • 摘要: 准噶尔盆地东部吉木萨尔凹陷二叠系芦草沟组为中国典型陆相页岩油层系。为了探究不同源储组合对烃源岩生排油的影响,基于前人对芦草沟组源储组合类型的划分,利用半封闭热模拟体系,开展不同源储结构芦草沟组页岩生排油实验研究,为页岩油富集规律及“甜点”精细评价提供参考依据。实验结果显示,储夹源型组合模式更有利于排油,源储互层型略低,源夹储型排油效率最低。碎屑岩+烃源岩组合下,储夹源型、源储互层型和源夹储型排油效率分别为35.6%、30.7%、25.6%;碳酸盐岩+烃源岩组合下,储夹源型、源储互层型和源夹储型排油效率分别为27.4%、27.5%、12.3%。结合排出油、储层中接收油及烃源岩中滞留油的族组成特征,发现储集岩中的接收油主要来自邻源供烃,源储距离越远,供烃关系越不明显。储夹源型页岩主要为下部邻源供油的特点,上部碎屑岩储层接收油量为10.7 mg/g,而下部碎屑岩储层接收油量仅为1.4 mg/g;源夹储型页岩以自生自储为主,烃源岩的滞留油含量较高,碎屑岩储层接收油量为6.0 mg/g,烃源岩中滞留油量为21.1 mg/g;源储互层型页岩以邻源供烃为主,自生自储为辅,从烃源岩到储集岩,抽提物族组分变化差异并不大,饱和烃含量分布在22.8%~33.0%,芳烃含量分布在6.2%~15.1%,非烃和沥青质含量分布在28.5%~41.1%和21.0%~30.0%,且储层岩性不同对其生排油效率影响相对较弱,含油性非均质性弱。从不同源储结构页岩生排油效率来看,源储互层型和储夹源型是芦草沟组页岩油勘探的较为有利的配置组合。

     

  • 图  1  准噶尔盆地吉木萨尔凹陷位置及二叠系芦草沟组构造等值线

    Figure  1.  Location of the Jimsar Sag in the Junggar Basin and tectonic isolines of the Lucaogou Formation in Permian

    图  2  生排油模拟实验中不同源储结构组合模式示意[19]

    Figure  2.  Schematic diagram of combination model of source-reservoir structures in hydrocarbon generation and expulsion simulation experiment

    图  3  生排油模拟实验中不同源储结构页岩生油总量及生油产率特征

    Figure  3.  Characteristics of total hydrocarbon generation and hydrocarbon generation rate of shale with different source-reservoir structures in hydrocarbon generation and expulsion simulation experiment

    图  4  生排油模拟实验中储夹源型页岩排出油量、储集岩接收油量和烃源岩滞留油量

    Figure  4.  Expelled hydrocarbon, received hydrocarbon in reservoir and retained hydrocarbon in source rocks of thick reservoir interbedded with thin source rock in hydrocarbon generation and expulsion simulation experiment

    图  5  生排油模拟实验中源夹储型页岩排出油量、储集岩接收油量和烃源岩滞留油量

    Figure  5.  Expelled hydrocarbon, received hydrocarbon in reservoir and retained hydrocarbon in source rocks of thick source rock interbedded with thin reservoir in hydrocarbon generation and expulsion simulation experiment

    图  6  生排油模拟实验中源储互层型页岩排出油量、储集岩接收油量和烃源岩滞留油量

    Figure  6.  Expelled hydrocarbon, received hydrocarbon in reservoir and retained hydrocarbon in source rocks of thin source rock interbedded with thin reservoir in hydrocarbon generation and expulsion simulation experiment

    图  7  生排油模拟实验中不同源储结构页岩生排油模拟产物族组成特征

    Figure  7.  Family composition characteristics of product simulated by experiment of hydrocarbon generation and expulsion from shale with different source-reservoir structures in hydrocarbon generation and expulsion simulation experiment

    图  8  生排油模拟实验中不同源储结构页岩排油效率特征

    Figure  8.  Hydrocarbon expulsion efficiency of shale with different source-reservoir structures in hydrocarbon generation and expulsion simulation experiment

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  • 收稿日期:  2022-12-20
  • 修回日期:  2023-06-20
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