东营凹陷古近系泥页岩中可溶有机质特征与页岩油“甜点”预测
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  • 英文篇名:Characteristics of soluble organic matter of Paleogene shale in Dongying Sag and prediction of shale oil “sweet spots”
  • 作者:何晋译 ; 蔡进功 ; 雷天柱 ; 张守鹏 ; 张存霞
  • 英文作者:HE Jinyi;CAI Jingong;LEI Tianzhu;ZHANG Shoupeng;ZHANG Cunxia;State Key Laboratory of Marine Geology,Tongji University;Lanzhou Center for Oil and Gas Resources,Institute of Geology and Geophysics,Chinese Acamedy of Sciences;Exploration and Development Research Institute,Shengli Oilfield Company,SINOPEC;
  • 关键词:页岩油 ; 可溶有机质 ; 流动性指数 ; 轻质烃 ; “甜点”预测
  • 英文关键词:shale oil;;soluble organic matter;;MI parameter;;light hydrocarbon;;"sweet spots" prediction
  • 中文刊名:YQCS
  • 英文刊名:Petroleum Geology and Recovery Efficiency
  • 机构:同济大学海洋地质国家重点实验室;中国科学院地质与地球物理研究所兰州油气资源研究中心;中国石化胜利油田分公司勘探开发研究院;
  • 出版日期:2019-01-03 10:27
  • 出版单位:油气地质与采收率
  • 年:2019
  • 期:v.26;No.136
  • 基金:国家自然科学基金项目“泥页岩中有机质的存在对蒙脱石伊利石化进程影响的研究”(41672115);; 国家科技重大专项“济阳坳陷页岩油勘探开发目标评价”(2017ZX05049-004)和“济阳坳陷古近系烃源岩有机-无机协同演化及其资源潜力评价”(2016ZX05006001-003)
  • 语种:中文;
  • 页:YQCS201901018
  • 页数:9
  • CN:01
  • ISSN:37-1359/TE
  • 分类号:178-186
摘要
可溶有机质作为页岩油的重要载体,所蕴含的丰富信息对页岩油"甜点"预测具有重要意义。选取东营凹陷沙四段下亚段、沙四段上亚段、沙三段下亚段和沙三段中亚段泥页岩样品,对其可溶有机质族组分及饱和烃色谱进行分析,据可溶有机质含量、族组分及轻质烃含量等特征,确立反映页岩油丰富程度的参数(可溶有机质含量和饱和烃含量)及表征页岩油流动性的参数(流动性指数、轻质烃含量和轻质烃散失量)。结果表明,沙四段上亚段和沙三段下亚段可溶有机质含量与饱和烃含量明显高于沙四段下亚段和沙三段中亚段,以沙四段上亚段最高;沙四段上亚段和沙三段下亚段可溶有机质中流动性指数较沙四段下亚段和沙三段中亚段更高,同时沙四段上亚段具有更高的原始轻质烃含量和轻质烃散失量。综合分析认为,沙四段上亚段和沙三段下亚段是页岩油有利发育层段,其中以沙四段上亚段最好,是东营凹陷古近系页岩油"甜点"优选目标区。
        As an important carrier of shale oil,soluble organic matter contains abundant information which is of great significance to the prediction of shale oil"sweet spots". Shale samples drilled from Lower Es_4 Member,Upper Es_4 Member,Lower Es_3 Member and Middle Es_3 Member in Dongying Sag were selected to analyze the group component of soluble organic matter and saturated hydrocarbon chromatography. According to the characteristics of soluble organic matter content,group composition and light hydrocarbon content,indicators including the total amount of soluble organic matter and the amount of saturated hydrocarbon were established to identify the abundance of shale oil,as well as indicators including the MI parameter,light hydrocarbon content and loss of light hydrocarbon to characterize the mobility capacity of shale oil. The results indicate that the content of soluble organic matter and saturated hydrocarbon of Upper Es_4 Member and Lower Es_3 Member was significantly larger than that of Lower Es_4 Member and Middle Es_3 Member,and that of Upper Es_4 Member were the highest among the four layers. Shale oil MI of Upper Es_4 Member and Lower Es_3 Member was higher than that ofLower Es_4 Member and Middle Es_3 Member. Meanwhile,the original light hydrocarbon content and loss of Upper Es_4 Member were higher. According to the comprehensive analysis,Lower Es_3 Member and Upper Es_4 Member are favorable development formations of shale oil. Further more,Upper Es_4 Member is the preferred target area of Paleogene shale oil"sweet spots"in Dongying Sag.
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