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首页> 外文期刊>Journal of Asian earth sciences >Application of chemometrics to quantitative source assessment of crude oils from the Zhanhua Depression, Bohai Bay Basin, northeast China
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Application of chemometrics to quantitative source assessment of crude oils from the Zhanhua Depression, Bohai Bay Basin, northeast China

机译：化学计量学在东北渤海湾盆地渤海湾盆地原油定量源评估

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摘要

The chemometric methods alternating least squares and multidimensional scaling were employed in this study to quantify the relative contribution of the sources and identify the affinities of sixty-five crude oil samples collected in the Zhanhua Depression. The circos diagram was used to reflect the relative contributions of different source rocks. Based on these techniques, two end-members (EMs) were identified which represent the geochemical characteristics of two regional source-rocks (Es-3(L) and Es-4(U)). The EM1 composition assigned to Es-3(L) is characterized by relatively low C-35/C-34 homohopane ratio and relatively low abundance of gammacerane. This EM is consistent with a source facies that was deposited in freshwater lacustrine environment that contained a non-stratified water column and suboxic to dysoxic bottom waters. Distributions of the regular steranes and tricyclic terpanes, the relatively low steranes/hopanes ratio suggest the organic matter input into this source facies were combined microalgal material and terrestrial organic matter. Oils from the Bonan Sag and Gubei Sag were derived mainly from this source facies. In contrast, EM2 has been assigned to the Es-4(U) source rock and is characterized by relatively high abundance of gammacerane, C-35/C-34 homohopane ratio greater than one, suggesting deposited in a saline to hypersaline lacustrine environment that contained a stratified water column with strongly reducing bottom waters. Distributions of the regular steranes and tricyclic terpanes as well as relatively high steranes/hopanes ratio suggest the organic matter deposited in this setting was mainly derived from microalgal/bacterial sources. Oils from the Luojia Nose and Chanjiazhang High were derived mainly from this source facies. Mixed contributions of these two source facies (end-members) account for the compositions of crudes produced in the Yihazhuang Arch and Gudao High. In the case of the Yihezhuang Arch the crudes appear to have near equal contributions from the two source faces, whereas crudes from the Gudao High appear to have slightly higher contributions from the Es-3(L) source facies than from the Es-4(U) source facies.
机译：该研究中使用了化学计量方法交替的最小二乘和多维缩放，以量化来源的相对贡献，并鉴定Zhanua抑郁症中收集的六十五个原油样品的亲和力。 CIRICOS图用于反映不同来源岩石的相对贡献。基于这些技术，鉴定了两个最终成员（EMS），其代表两个区域源岩的地球化学特征（ES-3（L）和ES-4（U））。分配给ES-3（L）的EM1组合物的特征在于相对低的C-35 / C-34均己络合物比和相对较低的γ甲烷。该EM与沉积在淡水叶子环境中的源相，含有非分层水柱和对二氧化碳底部水的源相。常规甾体和三环萜酯的分布，相对较低的甾体/料斗比表明该来源相对的有机物有机物组合微藻材料和陆地有机物。来自Bonan SAG和Gubei SAG的油主要来自这个来源相。相反，EM2已被分配给ES-4（U）源岩，其特征在于伽马察酵母相对较高，C-35 / C-34均己烷的比例大于1，表明盐水沉积到盐水曲线环境中含有一个具有强底水的分层水柱。常规甾体和三环萜酯的分布以及相对较高的甾体/料斗比表明该环境中沉积的有机物主要来自微藻/细菌来源。来自Luojia鼻子和Chanjiazhang High的油主要来自这个来源相。这两个来源相的混合贡献（最终成员）占y藏拱和古泽所作生产的丘陵组合物。在Yihezhuang Arch的情况下，丘陵似乎具有两个来源面的近似贡献，而来自古岛高的丘疹似乎与ES-3（L）源相比略高于ES-4（ u）来源相。

著录项

  • 来源
    《Journal of Asian earth sciences》 |2021年第15期|104875.1-104875.15|共15页
  • 作者

    Lin Xiao-Hui; Zhan Zhao-Wen; Zou Yan-Rong; Liang Tian; Peng Pingan;

  • 作者单位

    Chinese Acad Sci Guangzhou Inst Geochem State Key Lab Organ Geochem Guangzhou 510640 Peoples R China|Univ Chinese Acad Sci Beijing 10039 Peoples R China;

    Chinese Acad Sci Guangzhou Inst Geochem State Key Lab Organ Geochem Guangzhou 510640 Peoples R China;

    Chinese Acad Sci Guangzhou Inst Geochem State Key Lab Organ Geochem Guangzhou 510640 Peoples R China;

    Chinese Acad Sci Guangzhou Inst Geochem State Key Lab Organ Geochem Guangzhou 510640 Peoples R China|Univ Chinese Acad Sci Beijing 10039 Peoples R China;

    Chinese Acad Sci Guangzhou Inst Geochem State Key Lab Organ Geochem Guangzhou 510640 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    The Zhanhua Depression; Chemometrics; Biomarkers; Oil-oil correlation;

    机译：湛化萧条;化学计量学;生物标志物;油油相关;

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