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    辽河西部凹陷沙河街组烃源岩特征及油源精细对比

    惠沙沙 庞雄奇 柳广弟 周晓龙 胡涛 梅术星

    惠沙沙, 庞雄奇, 柳广弟, 周晓龙, 胡涛, 梅术星, 2023. 辽河西部凹陷沙河街组烃源岩特征及油源精细对比. 地球科学, 48(8): 3081-3098. doi: 10.3799/dqkx.2022.090
    引用本文: 惠沙沙, 庞雄奇, 柳广弟, 周晓龙, 胡涛, 梅术星, 2023. 辽河西部凹陷沙河街组烃源岩特征及油源精细对比. 地球科学, 48(8): 3081-3098. doi: 10.3799/dqkx.2022.090
    Hui Shasha, Pang Xiongqi, Liu Guangdi, Zhou Xiaolong, Hu Tao, Mei Shuxing, 2023. Characteristics of Paleogene Source Rocks and Fine Oil-Source Correlation in Liaohe Western Depression. Earth Science, 48(8): 3081-3098. doi: 10.3799/dqkx.2022.090
    Citation: Hui Shasha, Pang Xiongqi, Liu Guangdi, Zhou Xiaolong, Hu Tao, Mei Shuxing, 2023. Characteristics of Paleogene Source Rocks and Fine Oil-Source Correlation in Liaohe Western Depression. Earth Science, 48(8): 3081-3098. doi: 10.3799/dqkx.2022.090

    辽河西部凹陷沙河街组烃源岩特征及油源精细对比

    doi: 10.3799/dqkx.2022.090
    基金项目: 

    国家重点基础研究发展计划(973计划)项目 2011CB201102

    中国石油科技项目 HX20180604

    详细信息
      作者简介:

      惠沙沙(1995—),女,博士研究生,主要从事油气成藏机理与资源评价研究. ORCID:0000-0002-2478-1273. E-mail:Hui_Shasha@163.com

    • 中图分类号: P559

    Characteristics of Paleogene Source Rocks and Fine Oil-Source Correlation in Liaohe Western Depression

    • 摘要: 为了明确辽河西部凹陷南北部烃源岩条件差异、查明凹陷内不同地区原油来源,采用TOC、岩石热解、Ro、饱和烃色谱-质谱等方法对不同洼陷烃源岩及原油特征分析并进行精细油源对比. 结果表明,西部凹陷沙四段烃源岩在北部发育(厚约700 m)、有机质丰度高、但成熟度较低(Ro < 0.5%),有机质以陆源高等植物为主,混有少量低等水生生物,沉积于偏还原的咸水-微咸水环境;沙三段及沙一段烃源岩在凹陷南部更为发育,丰度高且成熟度高,有机质以低等水生生物为主,沉积于偏氧化的淡水环境. 结果表明,北部原油来自于沙四段烃源岩;中部原油主要来自于沙三段烃源岩(冷家地区原油存在少量沙四段原油混入),而南部原油主要来自于沙三段和沙一段烃源岩.

       

    • 图  1  辽河西部凹陷地层及构造特征综合示意图

      修改自冷济高等(2008)

      Fig.  1.  Comprehensive map of structural and stratigraphic characteristics in Liaohe Western Depression

      图  2  辽河西部凹陷沙河街组烃源岩厚度分布图

      Fig.  2.  Thickness distribution of source rocks in Shahejie Formation, Liaohe Western Depression

      图  3  辽河西部凹陷沙河街组烃源岩有机质丰度评价(SY/T 5735-1995)

      Fig.  3.  Evaluation of organic matter abundance in Shahejie Formation, Liaohe Western Depression(SY/T 5735-1995)

      图  4  辽河西部凹陷沙河街组烃源岩有机质类型判别图

      修改自蔡来星等(2020

      Fig.  4.  Organic matter types of source rocks in Shahejie Formation, Liaohe Western Depression

      图  5  辽河西部凹陷各生烃洼陷沙河街组烃源岩Ro随深度变化关系

      数据来源于中国石油辽河油田勘探开发研究院

      Fig.  5.  Relationship between Ro and depth of Shahejie Formation in different sags of Liaohe Western Depression

      图  6  辽河西部凹陷沙河街组烃源岩气相色谱特征

      Fig.  6.  GC characteristics of source rocks in Shahejie Formation, Liaohe Western Depression

      图  7  辽河西部凹陷各生烃洼陷沙河街组烃源岩Pr/nC17和Ph/nC18关系

      Fig.  7.  Relationship between Pr/nC17 and Ph/nC18 of source rocks in Shahejie Formation, Liaohe Western Depression

      图  8  辽河西部凹陷沙河街组烃源岩甾烷、萜烷特征

      Fig.  8.  Characteristics of steranes and terpanes of source rocks in Shahejie Formation, Liaohe Western Depression

      图  9  辽河西部凹陷原油物性特征

      Fig.  9.  Histogram of physical property of crude oil in Liaohe Western Depression

      图  10  辽河西部凹陷不同油区沙河街组原油族组成特征

      Fig.  10.  Group composition of crude oil in different oil fields in Liaohe Western Depression

      图  11  辽河西部凹陷沙河街组原油色谱-质谱特征

      Fig.  11.  GC-MS characteristics of crude oil in Shahejie Formation, Liaohe Western Depression

      图  12  辽河西部凹陷沙河街组原油Pr/nC17和Ph/nC18相关性

      Fig.  12.  Relationship between Pr/nC17 and Ph/nC18 of crude oil in Shahejie Formation, Liaohe Western Depression

      图  13  辽河西部凹陷沙河街组油-岩正构烷烃分布曲线对比图

      Fig.  13.  Correlation of n-alkanes between crude oil and source rock in Shahejie Formation, Liaohe Western Depression

      图  14  辽河西部凹陷沙河街组油-岩规则甾烷含量特征对比

      Fig.  14.  Triangle diagram of regular sterane content of crude oil and source rocks in Shahejie Formation, Liaohe Western Depression

      图  15  辽河西部凹陷沙河街组油-岩萜烷特征对比

      Fig.  15.  Terpane characteristics of crude oil and source rocks in Shahejie Formation, Liaohe Western Depression

      图  16  辽河西部凹陷沙河街组沿凹陷北东向展布剖面油源对比示意图

      Fig.  16.  Profile of oil-source correlation in Shahejie Formation, Liaohe Western Depression

      表  1  辽河西部凹陷沙河街组烃源岩地化分析数据表

      Table  1.   Geochemical characteristics of source rocks in Shahejie Formation, Liaohe Western Depression

      生烃洼陷 牛心坨-台安洼陷 盘山-陈家洼陷 清水洼陷
      层位地化参数 沙四段 沙三段 沙四段 沙三段 沙四段 沙三段 沙一段
      TOC (%) 0.13~7.14 0.02~1.21 0.82~9.2 0.12~5.43 1.16~1.29 0.67~4.06 0.26~4.71
      2.23 (72) 0.18 (43) 5.15 (47) 3.34 (29) 1.81 (6) 1.82 (70) 1.85 (24)
      S1+S2 (mg/g) 0.04~65.86 0.04~1.22 2.22~66.91 7.68~37.77 0.5~1.6 0.82~11.97 0.12~32.47
      11.16 (71) 0.15 (18) 27.86 (47) 16.27 (29) 0.85 (6) 4.36 (70) 6.16 (24)
      HI
      (mg/g TOC)
      17~810 74~93 246~740 272~490 15~56 35~4.7 107~674
      350 (60) 83 (2) 481 (47) 405 (29) 34 (7) 190 (71) 247 (24)
      Tmax(℃) 423~442 431~439 426~448℃ 425~435 446~525 429~467 420~443
      432 (60) 435 (2) 437 (47) 430 (29) 460 (7) 441 (71) 433 (24)
      Ro (%) 0.25~0.58 0.44~1.17 0.32~1.61 0.29~0.63
      0.36 (43) 0.69 (60) 0.67 (133) 0.40 (24)
      显微组分
      单衍胜等,2016
      腐泥组(%) (1.3~97.2)/52.8
      壳质组(%) (~68)/4.8
      镜质组(%) (1~97)/35.9
      惰质组(%) (~87.2)/6.4
      注:表中数据为$ \frac{\mathrm{最}\mathrm{小}\mathrm{值}~\mathrm{最}\mathrm{大}\mathrm{值}}{\mathrm{平}\mathrm{均}\mathrm{值}\left(\mathrm{样}\mathrm{品}\mathrm{数}\right)} $或(最小值~最大值)/平均值.
      下载: 导出CSV

      表  2  辽河西部凹陷沙河街组烃源岩生物标志化合物组成特征

      Table  2.   Biomarkers from source rocks in Liaohe Western Depression

      洼陷 层位 Pr/Ph Pr/C17 Ph/C18 ααα-C29 S/(S+R) C29 ββ/(αα+ββ) C31藿烷(S/S+R) Ts/Tm γ-蜡烷/C30H ααα20RC27/C29
      牛心坨-台安洼陷 Es3 0.29 0.45 1.15 0.21 0.37 0.54 0.64 0.31 0.66
      Es4 0.84 1.54 2.38 0.19 0.28 0.52 0.30 0.22 0.94
      盘山-陈家洼陷 Es3 1.36 0.78 0.61 0.26 0.30 0.37 / 0.05 0.74
      Es4 0.62 0.76 1.35 0.25 / 0.54 / 0.37 0.40
      清水洼陷 Es1 0.86 0.65 0.71 0.23 0.20 0.57 0.25 0.29 1.31
      Es3 1.55 1.11 1.06 0.51 0.46 0.6 0.96 0.1 0.74
      下载: 导出CSV

      表  3  辽河西部凹陷原油甾萜类生物标志化合物组成特征

      Table  3.   Biomarkers of sterane and terpane from crude oil in Liaohe Western Depression

      油区 γ-蜡烷/C30
      藿烷
      ααα-C29 S/
      (S+R)
      C29 ββ/
      (αα+ββ)
      Ts/Tm C31藿烷
      (S/S+R)
      ααα-20R
      C27/C29
      规则甾
      烷/藿烷
      (孕甾烷+升孕甾烷)/ααα-
      C2920R
      牛心坨 0.17 0.22 0.25 0.36 0.55 0.71 0.83 0.02
      高升 0.29 0.25 0.23 0.26 0.55 0.50 1.12 0
      冷家 0.14 0.36 0.32 0.46 0.56 0.60 0.52 0.06
      曙光 0.27 0.36 0.35 0.58 0.57 0.62 0.39 0.13
      兴隆台 0.11 0.42 0.41 1.64 0.58 0.80 0.34 0.30
      双台子-双南 0.22 0.38 0.41 1.08 0.58 0.89 0.39 0.29
      欢喜岭 0.23 0.36 0.35 1.18 0.57 0.73 0.31 0.17
      小洼 0.26 0.44 0.38 0.66 0.56 0.78 0.40 0.15
      下载: 导出CSV
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    • 收稿日期:  2022-02-11
    • 刊出日期:  2023-08-25

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