吉林大学学报(地球科学版) ›› 2018, Vol. 48 ›› Issue (1): 29-38.doi: 10.13278/j.cnki.jjuese.20160296

• 地质与资源 • 上一篇    下一篇

雅布赖盆地萨尔台凹陷侏罗系新河组有效烃源岩研究

都鹏燕1,2, 高岗1, 魏涛3, 赵乐义3, 杨军3, 李涛3, 王建国3   

  1. 1. 中国石油大学(北京)地球科学学院, 北京 102249;
    2. 同济大学海洋与地球科学学院, 上海 200092;
    3. 中国石油玉门油田公司勘探开发研究院, 甘肃 酒泉 735019
  • 收稿日期:2017-02-07 出版日期:2018-01-26 发布日期:2018-01-26
  • 通讯作者: 高岗(1966),男,副教授,博士,主要从事油气地质与勘探、油气地球化学、油气成藏与分布规律及资源评价等方面的科研与教学工作,E-mail:gaogang2819@sina.com E-mail:gaogang2819@sina.com
  • 作者简介:都鹏燕(1990),女,博士研究生,主要从事有机地球化学与石油地质学方面的研究,E-mail:dudushao@126.com
  • 基金资助:
    中国石油重大科技专项（2013E-050209）

Effective Source Rocks in Jurassic Xinhe Formation in Sartai Sag, Yabrai Basin

Du Pengyan1,2, Gao Gang1, Wei Tao3, Zhao Leyi3, Yang Jun3, Li Tao3, Wang Jianguo3   

  1. 1. College of Geosciences, China University of Petroleum, Beijing 102249, China;
    2. School of Ocean and Earth Science, Tongji University, Shanghai 200092, China;
    3. Research Institute of Exploration and Development, Yumen Oilfield Company, CNPC, Jiuquan 735019, Gansu, China
  • Received:2017-02-07 Online:2018-01-26 Published:2018-01-26
  • Supported by:
    Supported by PetroChina Major Science and Technology Project(2013E-050209)

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摘要： 对雅布赖盆地萨尔台凹陷侏罗系新河组有效烃源岩进行有机质下限分析，识别有效烃源岩分布范围，并分析有效烃源岩下限值与成熟度的关系。本文据烃源岩生排烃机理，通过w（TOC）与热解参数w（S1）之间的关系，确定了雅布赖盆地萨尔台凹陷新河组下段有效烃源岩w（TOC）下限值，其中盐场次凹有效烃源岩w（TOC）下限值为1.0%，小湖次凹w（TOC）下限值为0.7%，梭托次凹不具备排烃条件。利用△log R法计算新河组下段的页岩w（TOC）含量，识别并统计了单井有效烃源岩厚度，参照沉积相和地层厚度确定了有效烃源岩的分布特征，新河组下段有效烃源岩主要分布在小湖次凹中央洼槽带，累计厚度最大约600 m，盐场次凹有效烃源岩累计厚度基本小于100 m，梭托次凹不发育有效烃源岩。成熟度越大，有效烃源岩w（TOC）下限值越小

关键词: 有效烃源岩, w(TOC)下限值, 新河组, 萨尔台凹陷, 雅布赖盆地

Abstract: According to the hydrocarbon generation and expulsion mechanism, the authors analyzed the relationship between TOC content and rock pyrolysis parameter S1, determined the low limit value of effective source rock TOC content of the lower member of the Xinhe Formation shale in Sartai sag, Yabrai basin. The low limit value of TOC content in the Xinhe Formation shale of Yanchang subsag and Xiaohu subsag are 1.0% and 0.7% respectively, while the source rocks in the Xinhe Formation of Suotuo subsag are unsatisfied with the hydrocarbon expulsion condition. Using the Δlog R method, the authors calculated the TOC content of the Xinhe Formation shale, then recognized the effective source rocks in wells and got the distribution characteristics of effective source rocks referring to the sedimentary facies and statistic thickness of effective source rocks in wells. The effective source rocks of the lower member of the Xinhe Formation are mainly distributed within Xiaohu subsag with the maximum gross thickness adjacent to 600 m, basically less than 100 m in Yanchang subsag, and there are no effective source rocks in Suotuo subsag. The higher the thermal maturity is, the lower the low limit value of effective source rock TOC content.

Key words: effective source rocks, low limit value of TOC content, Xinhe Formation, Sartai sag, Yabrai basin

中图分类号: 

  • TE122
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