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准噶尔盆地玛湖凹陷风城组泥页岩生物标志化合物特征与赋存状态研究

支东明 冷筠滢 谢安 唐勇 何晋译 何文军 李志明 邹阳 朱涛

支东明, 冷筠滢, 谢安, 唐勇, 何晋译, 何文军, 李志明, 邹阳, 朱涛. 准噶尔盆地玛湖凹陷风城组泥页岩生物标志化合物特征与赋存状态研究[J]. 石油实验地质, 2024, 46(5): 954-964. doi: 10.11781/sysydz202405954
引用本文: 支东明, 冷筠滢, 谢安, 唐勇, 何晋译, 何文军, 李志明, 邹阳, 朱涛. 准噶尔盆地玛湖凹陷风城组泥页岩生物标志化合物特征与赋存状态研究[J]. 石油实验地质, 2024, 46(5): 954-964. doi: 10.11781/sysydz202405954
ZHI Dongming, LENG Junying, XIE An, TANG Yong, HE Jinyi, HE Wenjun, LI Zhiming, ZOU Yang, ZHU Tao. Characteristics and occurrence states of shale biomarker compounds in Fengcheng Formation, Mahu Sag, Junggar Basin[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2024, 46(5): 954-964. doi: 10.11781/sysydz202405954
Citation: ZHI Dongming, LENG Junying, XIE An, TANG Yong, HE Jinyi, HE Wenjun, LI Zhiming, ZOU Yang, ZHU Tao. Characteristics and occurrence states of shale biomarker compounds in Fengcheng Formation, Mahu Sag, Junggar Basin[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2024, 46(5): 954-964. doi: 10.11781/sysydz202405954

准噶尔盆地玛湖凹陷风城组泥页岩生物标志化合物特征与赋存状态研究

doi: 10.11781/sysydz202405954
基金项目: 

新疆维吾尔自治区“天山英才”科技创新领军人才支持项目 2022TSYCLJ0070

国家自然科学基金项目 42090022

详细信息
    作者简介:

    支东明(1971—), 男, 教授级高级工程师, 从事石油地质研究。E-mail: Zhidm@petrochina.com.cn

    通讯作者:

    何文军(1988—), 男, 硕士, 高级工程师, 从事油气地质研究。E-mail: fchwj@petrochina.com.cn

  • 中图分类号: TE122.113

Characteristics and occurrence states of shale biomarker compounds in Fengcheng Formation, Mahu Sag, Junggar Basin

  • 摘要: 准噶尔盆地玛湖凹陷二叠系风城组泥页岩不同层段生物标志化合物特征与赋存状态特征认识较为薄弱,通过采用岩石热解、气相色谱—质谱、荧光薄片和氩离子抛光电镜等实验技术,厘清不同层段烃源岩物质基础、生物标志化合物分布特征及意义、不同赋存状态页岩油,对玛湖凹陷下一步勘探部署具有重要意义。玛湖凹陷风城组泥页岩主要为中等—好烃源岩,有机质类型为Ⅱ型,处于成熟演化阶段;生物标志化合物组成特征表明具有高丰度的Pr和Ph、β-胡萝卜烷及C29重排甾烷,C27-C28-C29规则甾烷呈反“L”型分布,指示有机质以藻类等低等水生生物贡献为主;较低的Pr/Ph比值以及较高的伽马蜡烷指数,反映出沉积环境主要为咸化的还原环境;C31αβ22S/(22S+22R)、C29M/C29H和C29ββ/(ββ+αα)等藿烷类和甾烷类成熟度参数表明烃源岩处于成熟阶段。另外,风城组二段泥页岩相对于风一段、风三段具有更大的生烃潜力,具备更好的烃源岩物质基础,同时C20/C23TT、C21/C23TT、Ga/C30H等生物标志化合物相关参数指示风二段藻类等贡献较多,更偏还原和咸化的环境;结合风二段以游离赋存状态为主,认为烃类赋存于粒间孔和粒内孔中。风二段有利于页岩油富集与保存,展现出更好的页岩油勘探开发前景。

     

  • 图  1  准噶尔盆地玛湖凹陷大地构造位置与地层柱状图

    Figure  1.  Geotectonic position and stratigraphic column of Mahu Sag, Junggar Basin

    图  2  准噶尔盆地玛湖凹陷玛页1井风城组泥页岩岩石热解(S1+S2)与有机碳含量(TOC)的关系

    Figure  2.  Relationship between rock pyrolysis (S1+S2) and TOC contents in shale samples from Fengcheng Formation in well Maye 1, Mahu Sag, Junggar Basin

    图  3  准噶尔盆地玛湖凹陷风城组玛页1井泥页岩Tmax值与Ro值随深度变化特征

    Figure  3.  Variation characteristics of Tmax and Ro values with depth of shale samples from Fengcheng Formation in well Maye 1, Mahu Sag, Junggar Basin

    图  4  准噶尔盆地玛湖凹陷风城组玛页1井泥页岩IHTmaxIHIO关系图

    Figure  4.  IH vs. Tmax and IH vs. IO of shale samples from Fengcheng Formation in well Maye 1, Mahu Sag, Junggar Basin

    图  5  准噶尔盆地玛湖凹陷玛页1井风城组烃源岩抽提物饱和烃m/z 85和m/z 125质量色谱图

    Figure  5.  Mass chromatograms of m/z 85 and m/z 125 of saturated hydrocarbons from source rock extracts of Fengcheng Formation in well Maye 1, Mahu Sag, Junggar Basin

    图  6  准噶尔盆地玛湖凹陷玛页1井风城组烃源岩样品Ph/nC18—Pr/nC17相关图

    Figure  6.  Ph/nC18 vs. Pr/nC17 of source rock samples from Fengcheng Formation in well Maye 1, Mahu Sag, Junggar Basin

    图  7  准噶尔盆地玛湖凹陷玛页1井风城组烃源岩抽提物饱和烃m/z 191和m/z 217质量色谱图

    Figure  7.  Mass chromatograms of m/z 191 and m/z 217 of saturated hydrocarbons from source rock extracts of Fengcheng Formation in well Maye 1, Mahu Sag, Junggar Basin

    图  8  准噶尔盆地玛湖凹陷玛页1井风城组烃源岩含油性与可动性的相关性

    Figure  8.  Correlation between oil content and mobility of source rock samples from Fengcheng Formation in well Maye 1, Mahu Sag, Junggar Basin

    图  9  准噶尔盆地玛湖凹陷玛页1井风城组泥页岩样品镜下特征

    a-c.氩离子抛光电镜,4 671.7 m,主要储集空间类型为黏土矿物片间孔、长石溶孔,可见收缩缝;d-f.氩离子抛光电镜,4 715 m,主要储集空间类型为粒间孔、长石溶孔和白云石溶孔;g-i.氩离子抛光电镜,4 894.3 m,主要储集空间为粒间孔及黏土矿物片间孔,长石溶孔及白云石溶孔;j-k.普通薄片和荧光薄片,4 671.7 m,整体荧光现象明显,白云石胶结、溶蚀处粒间见黄绿色荧光,未被交代的自生碎屑颗粒呈亮绿色荧光;l-m.普通薄片和荧光薄片,4 715 m,整体荧光现象明显,白云石颗粒内部及周缘呈亮黄绿色荧光,粒间见亮绿色荧光,黏土矿物呈暗橙黄色荧光;n-o.普通薄片和荧光薄片,4 894.3 m,整体荧光现象明显,白云石颗粒内部及周缘呈亮黄绿色荧光,粒间见亮绿色荧光。

    Figure  9.  Microscopic characteristics of shale samples from Fengcheng Formation in well Maye 1, Mahu Sag, Junggar Basin

    表  1  准噶尔盆地玛湖凹陷玛页1井风城组烃源岩抽提物萜烷类化合物参数

    Table  1.   Selected parameters related to terpene hydrocarbons in source rock extracts from Fengcheng Formation in well Maye 1, Mahu Sag, Junggar Basin

    地层 深度/m C20TT/C23TT C21TT/C23TT C24TeT/(C24 TeT+C23TT) C29H/C30H C31H/C30H C23TT/C30H Ga/C30H Ga/0.5C31H(22R+22S) C31αβ22S/(22S+22R) C29M/C29H C30M/C30H
    风三段 4 591.92 0.44 0.78 0.30 0.58 0.22 0.29 0.08 0.32 0.55 0.11 0.14
    风三段 4 598.82 0.72 1.05 0.31 0.59 0.22 0.35 0.07 0.31 0.54 0.10 0.15
    风二段 4 676.90 0.49 0.75 0.24 0.58 0.21 0.49 0.16 1.65 0.58 0.11 0.13
    风二段 4 713.14 0.48 0.73 0.21 0.57 0.20 0.56 0.24 1.98 0.58 0.11 0.15
    风二段 4 740.39 0.49 0.66 0.40 0.64 0.19 0.50 0.43 1.92 0.57 0.13 0.15
    风二段 4 749.73 0.45 0.66 0.23 0.56 0.21 0.65 0.43 1.69 0.59 0.11 0.14
    风一段 4 800.10 0.45 0.72 0.19 0.68 0.20 0.93 0.67 2.55 0.55 0.13 0.15
    风一段 4 824.60 0.45 0.73 0.15 0.72 0.20 1.42 0.57 2.25 0.60 0.11 0.14
    风一段 4 867.97 0.56 0.69 0.26 0.66 0.15 0.83 0.59 2.05 0.56 0.13 0.13
    风一段 4 933.71 0.47 0.70 0.09 0.80 0.18 1.02 0.72 2.65 0.60 0.12 0.15
    风一段 4 939.13 0.67 0.79 0.09 0.80 0.16 1.35 0.60 2.53 0.57 0.14 0.14
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  • 收稿日期:  2024-04-19
  • 修回日期:  2024-08-07
  • 刊出日期:  2024-09-28

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