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    冀中坳陷束鹿凹陷潜山原油地球化学特征与油源对比

    王元杰 蔡川 肖阳 明锦 田然 任艺 朱张丽 张钰景 时聪

    王元杰, 蔡川, 肖阳, 明锦, 田然, 任艺, 朱张丽, 张钰景, 时聪, 2021. 冀中坳陷束鹿凹陷潜山原油地球化学特征与油源对比. 地球科学, 46(10): 3629-3644. doi: 10.3799/dqkx.2021.030
    引用本文: 王元杰, 蔡川, 肖阳, 明锦, 田然, 任艺, 朱张丽, 张钰景, 时聪, 2021. 冀中坳陷束鹿凹陷潜山原油地球化学特征与油源对比. 地球科学, 46(10): 3629-3644. doi: 10.3799/dqkx.2021.030
    Wang Yuanjie, Cai Chuan, Xiao Yang, Ming Jin, Tian Ran, Ren Yi, Zhu Zhangli, Zhang Yujing, Shi Cong, 2021. Geochemical Characteristics and Oil-Source Correlation of Crude Oils of Buried Hills in Shulu Sag, Jizhong Depression. Earth Science, 46(10): 3629-3644. doi: 10.3799/dqkx.2021.030
    Citation: Wang Yuanjie, Cai Chuan, Xiao Yang, Ming Jin, Tian Ran, Ren Yi, Zhu Zhangli, Zhang Yujing, Shi Cong, 2021. Geochemical Characteristics and Oil-Source Correlation of Crude Oils of Buried Hills in Shulu Sag, Jizhong Depression. Earth Science, 46(10): 3629-3644. doi: 10.3799/dqkx.2021.030

    冀中坳陷束鹿凹陷潜山原油地球化学特征与油源对比

    doi: 10.3799/dqkx.2021.030
    基金项目: 

    中国石油天然气股份有限公司重大科技专项 2017E-15

    华北油田公司校企合作项目 HBYT-YJY-2018-JS-177

    详细信息
      作者简介:

      王元杰(1968-), 男, 高级工程师, 主要从事石油天然气勘探研究工作.ORCID: 0000-0003-1434-6769.E-mail: yjy_wyj@petrochina.com.cn

    • 中图分类号: P618.13

    Geochemical Characteristics and Oil-Source Correlation of Crude Oils of Buried Hills in Shulu Sag, Jizhong Depression

    • 摘要: 为了探究束鹿凹陷潜山油藏的油气来源,利用聚类分析方法对主要烃源岩进行了精细划分,并通过生物标志化合物和油-岩成熟度对比,实现了潜山油源的精细对比.结果表明,潜山原油的地球化学特征总体相似,来自同一套烃源岩.Es1x烃源岩有机质以藻类和浮游生物输入为主,沉积于咸水、强还原环境,处于未熟-低成熟阶段,而Es3x烃源岩有机质以浮游生物和高等植物混合输入为主,沉积于淡水-微咸水、弱氧化-弱还原环境,成熟度随深度增加而增大,可细分为A、B、C、D四种类型,其中D类是最好的类型.油源对比表明,潜山原油主要来源于Es3x烃源岩,其中斜坡潜山原油主要来源于洼槽边缘浅层低成熟Es3x烃源岩,而洼中隆潜山原油主要来源于洼槽中心深层高-过成熟Es3x烃源岩.

       

    • 图  1  冀中坳陷束鹿凹陷区域位置(a)、构造单元划分(b)及油藏剖面图(c~e)

      Fig.  1.  The location map (a), tectonic units (b) and profile map(c-e) of Shulu sag, Jizhong depression

      图  2  束鹿凹陷Es1x和Es3x烃源岩有机质丰度评价图

      Fig.  2.  Evaluation of organic matter abundance of Es1x and Es3x source rocks in Shulu sag

      图  3  束鹿凹陷Es1x和Es3x烃源岩有机质类型和成熟度评价图

      Fig.  3.  Evaluation of organic matter type and maturity of Es1x and Es3x source rocks in Shulu sag

      图  4  束鹿凹陷潜山原油密度与粘度关系

      Fig.  4.  Plot of density and viscosity of crude oil of buried hills in Shulu sag

      图  5  束鹿凹陷不同区域潜山原油组分含量分布

      Fig.  5.  Distribution of component content of buried hill crude oil in different areas of Shulu sag

      图  6  束鹿凹陷潜山原油饱和烃色谱-质谱图

      Fig.  6.  Chromatography-mass spectra of saturated hydrocarbon of oil in buried hill of Shulu sag

      图  7  束鹿凹陷烃源岩、原油Pr/nC17-Ph/nC18关系图

      Fig.  7.  Plot of the Pr/nC17 versus the Ph/nC18 of crude oil and source rocks in the Shulu sag

      图  8  束鹿凹陷烃源岩、原油规则甾烷C27~C29相对含量三角图

      Fig.  8.  Ternary diagram of regular steranes (C27-C29) of crude oil and source rocks in the Shulu sag

      图  9  束鹿凹陷典型烃源岩及原油饱和烃色谱-质谱图

      Fig.  9.  Chromatography-mass spectra of saturated hydrocarbon of source rocks and oil in Shulu sag

      图  10  束鹿凹陷Es3x烃源岩聚类分析树状图及生标参数纵向变化图

      Fig.  10.  Tree diagram of hierarchical cluster analysis and longitudinal variation of biomarker parameters of Es3x source rock in Shulu sag

      图  11  束鹿凹陷烃源岩、原油Pr/Ph-Ga/C31H关系图

      Fig.  11.  Plot of Pr/Ph versus Ga/C31H of source rock and crude oil in the Shulu sag

      图  12  束鹿凹陷原油C29甾烷ββ/(αα+ββ)与C29甾烷20S/(20S+20R)成熟度比值交汇图

      Fig.  12.  Cross plot of C29 sterane ββ/(αα+ββ) and C29 sterane 20S/(20S+20R) maturity ratios of crude oils in the Shulu sag

      图  13  束鹿凹陷烃源岩成熟度判别图

      Fig.  13.  Identification of source rock maturity in Shulu sag

      表  1  实验样品与数据收集信息

      Table  1.   Information for experimental samples and collected data

      样品类型 层位 数量(件) 分布深度(m) 取样井 备注
      取样信息 烃源岩 Es1x 10 2 377~2 847 J58、J97、J116、ST1H 以灰色泥页岩为主,部分为膏质泥岩,油页岩
      Es3x 63 3 118~4 290 J94、J97、J100、J116、ST1H 以泥灰岩为主,部分为泥页岩
      原油 O 5 1 636.2~2 750.2 JG14-1、JG33、JG18(抽提液)、JG21、JG22
      收集数据信息 原油生标参数 Es1x 1 2 757.5 J52 收集自华北油田资料室
      Es3x 8 3 950~4 321 J98、J116、JG13、ST1H、ST2x、ST3
      O 2 4 051~4 623 JG1、JG2
      原油物性参数 O-$ {\rm{\rlap{-} C}}$ 56 1 332.1~4 769.1 JG6、JG33、JG14-1、J7、J23、J33、J34、JG22、JG23、JG1、JG2、JG4
      下载: 导出CSV

      表  2  束鹿凹陷潜山原油物性统计

      Table  2.   Statistical of physical properties of buried hill crude oil in Shulu sag

      构造带 密度(g/cm3) 粘度(mPa·s) 含硫量(%) 含蜡量(%) 胶质+沥青质(%) 原油类型
      洼中隆潜山 0.757~0.860 0.95~8.66 0.04~0.26 9.5~44.8 2.70~25.35 轻质油
      0.826 (23) 4.07 (23) 0.13 (23) 17.05 (23) 8.22 (23)
      斜坡北段 0.833~0.868 5.02~13.94 0.16~0.45 12.69~22.49 12.55~29.33 轻质油为主,部分中质油
      0.856 (11) 9.00 (11) 0.27 (11) 16.85 (11) 21.03 (11)
      斜坡南段 0.967~1.062 816~14 690 1.14~2.89 0.35~12.84 47.56~78.25 重质-超稠油
      1.016 (21) 4 683 (21) 1.64 (21) 5.46 (9) 59.28 (21)
      注:括号中数字为样品数.
      下载: 导出CSV

      表  3  束鹿凹陷潜山原油生物标志化合物参数

      Table  3.   Parameters of biomarker compounds of buried hill crude oil in Shulu sag

      井位 深度(m) Pr/Ph Pr/nC17 Ph/nC18 Ga/C31H ααα20R- C27(%) ααα20R- C28(%) ααα20R- C29(%) 20S/20(S+R)-C29 ββ/(αα+ββ)-C29
      JG14-1 2 050 1.49 0.79 0.48 - - - - - -
      JG33 2 755 2.35 0.58 0.28 0.08 40.28 14.79 44.93 0.47 0.33
      JG18 1 374 - - - 0.29 36.98 22.02 41.00 0.34 0.37
      JG21 1 870 0.69 0.46 0.68 0.27 43.90 16.30 39.79 0.34 0.31
      JG22 1 636 - - - 0.20 43.18 14.77 42.05 0.36 0.35
      JG1 4 051 1.97 0.27 0.15 - - - - - -
      JG2 4 623 0.95 0.40 0.45 0.15 - - - 0.54 0.45
      下载: 导出CSV
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