新疆石油地质

新疆石油地质 ›› 2006, Vol. 27 ›› Issue (5): 549-551.

• 油气勘探 • 上一篇    下一篇

川东北地区热流史及成烃史研究

卢庆治1, 郭彤楼2, 胡圣标1   

  1. 1.中国科学院地质与地球物理研究所, 北京 100029;
    2.中国石化南方勘探开发分公司, 昆明 650021
  • 收稿日期:2006-02-22 出版日期:2006-10-01 发布日期:2020-10-20
  • 作者简介:卢庆治(1977-), 男, 辽宁北票人, 在读博士研究生, 石油地质,(Tel) 010-62007814(E-mail) qingzhilu@sohu.com.

Hydrothermal History and Hydrocarbon Generation History in Northeastern Sichuan Basin

LU Qing-zhi1, GUO Tong-lou2, HU Sheng-biao1   

  1. 1. Institute of Geology and Geophysics, CAS, Beijing 100029, China;
    2. Southern Exploration and Development Company, Sinopec, Kunming, Yunnan 650021, China
  • Received:2006-02-22 Online:2006-10-01 Published:2020-10-20

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摘要： 根据热流史及剥蚀量恢复结果对川东北地区二叠系及上三叠统两套主要烃源层的成烃史进行了研究。热流史恢复结果表明,在晚二叠世初期古热流值达到最高(可达62~70 mW/m2,井底热流),此后热流持续降低直到现今(平均约45 mW/m2,井底热流)。研究区中-新生界不整合面的剥蚀厚度最大,平均可达2 100 m. 二叠系烃源岩快速生烃时期是在早三叠世、晚三叠世及早-中侏罗世,而上三叠统烃源岩快速生烃时期是在中-晚侏罗世及晚白垩世。

关键词: 四川盆地, 烃源岩, 热演化, 剥蚀厚度, 成烃史

Abstract: Based on the hydrothermal history reconstruction and the estimation of erosion thickness, the hydrocarbon generation history is investigated for Permian and Upper Triassic source rocks in northeastern Sichuan basin. The study shows that the paleo-heat flow value was reached to the top (62~70 mW/m2) at early stage of Late Permian, and then decreased to the present value (averaging 45 mW/m2, bottom-hole heat flow). The maximum erosion thickness occurred on Mesozoic-Cenozoic unconformity averaging 2 100 m. The hydrocarbon generation stage of Permian source rocks occurred during Early Triassic, Late Triassic and Early-Middle Jurassic; while that of Upper Triassic source rocks appeared during Middle-Late Jurassic and Late Cretaceous.

Key words: Sichuan basin, source rock, hydrothermal history, erosion thickness, hydrocarbon generation history

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