石油与天然气地质 ›› 2007, Vol. 28 ›› Issue (6): 791-796.doi: 10.11743/ogg20070613

• 论文 • 上一篇    下一篇

塔中隆起区中-下奥陶统顶不整合面油气运移分析和勘探潜力评价

周波1,3, 王毅1, 罗晓容2, 云金表1, 郑孟林1   

  1. 1. 中国石油化工股份有限公司 石油勘探开发研究院,北京 100083;
    2. 中国科学院 地质与地球物理研究所,北京 100029;
    3. 中国地质大学 能源学院,北京 100083
  • 收稿日期:2007-08-25 出版日期:2007-12-25 发布日期:2012-01-16
  • 基金项目:

    国家重点基础研究发展规划(973)项目(2005CB422100)

Hydrocarbon migration and exploration potential in the unconformities at the top of the Middle-Lower Ordovician in the central uplift belt,the Tarim Basin

Zhou Bo1,3, Wang Yi1, Luo Xiaorong2, Yun Jinbiao1, Zheng Menglin1   

  1. 1. Research Institute of Petroleum Exploration & Production, SINOPEC, Beijing 100083, China;
    2. Research Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China;
    3. School of Energy Resources, China University of Geoscienees, Beijing 100083, China
  • Received:2007-08-25 Online:2007-12-25 Published:2012-01-16

摘要:

将塔里木盆地中央隆起区中-下奥陶统顶不整合面作为目标层系,选择对该层有油气贡献的中-下寒武统烃源岩和中-下奥陶统烃源岩,针对两套烃源岩分别建立运移模式。其中,中-下寒武统烃源岩距离中-下奥陶统顶不整合面的垂向距离较远,运移模式以垂向为主,且主要是沿着断裂分布;而针对中-下奥陶统烃源岩则应用侵入逾渗理论模型来模拟其对中-下奥陶统顶不整合面的贡献,分析表明中-下奥陶统烃源岩对中-下奥陶统顶不整合面的油气贡献以侧向运移为主。最后,综合两套烃源岩的油气贡献分析认为塔中地区为最好的油气潜力区。

关键词: 不整合面, 油气运移, 勘探潜力, 中央隆起区, 塔里木盆地

Abstract:

Taking the top of the Middle-Lower Ordovician unconformity as the target,the source rocks in the Middle-Lower Cambrian and the Middle-Lower Ordovician were selected for their oil and gas contributions to establish hydrocarbon migration patterns.As the Middle-Lower Cambrian source rock is far from the top of the Middle-Lower Ordovician unconformity vertically,most of the hydrocarbons migrated vertically and distributed along the faults.While for the Middle-Lower Ordovician source rock,the invasion-percolation theoretical model was applied to characterize its contribution to the top of the Middle-Lower Ordovician unconformity and revealed that the hydrocarbon migration there is mainly lateral.Based on a comprehensive analysis of contributions of these two sets of source rocks,the Tazhong area is considered to be a favorable area for the hydrocarbon exploration.

Key words: unconformity, hydrocarbon migration, exploration potential, central uplift, Tarim Basin

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