新疆石油地质

新疆石油地质 ›› 1997, Vol. 18 ›› Issue (1): 40-45.

• 有机地球化学 • 上一篇    下一篇

塔里木盆地古生界烃源岩显微组分及其岩石学特征

程顶胜   

  1. 石油勒探开发科学研究院 北京 100083
  • 收稿日期:1995-12-05 发布日期:2021-01-18
  • 作者简介:程顶胜,博士 石汕地球化学

MACERALS AND PETROLOGY OF PALAEOZOIC SOURCE ROCK IN TARIM BASIN

Cheng Dingsheng   

  1. Scientific Research Institute of Petroleum Exploration and Development, CNPC, Beijing 100083
  • Received:1995-12-05 Published:2021-01-18
  • About author:Cheng Dingsheng, Doctor, Petroleum Geochemistry

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摘要： 通过显微镜检,提出了塔里木盆地古生界烃源岩的有机显微组分分类。在系统地阐述了各显微组分的岩石特征的基础.上,从有机岩石学角度对古生界烃源岩的生烃潜力进行了初步评价:寒武系烃源岩以次生组分为主,残存生烃潜力很弱;奥陶系碳酸盐烃源岩以藻类体为主具有较强的生烃能力,奥陶系泥质烃源岩成熟度过高,生烃潜力较弱;石炭系泥质烃源岩以生气为主,而碳酸盐烃源岩生油气潜力较大。

关键词: 塔里木盆地, 古生代, 生油层, 岩石学, 特征, 生油岩评价

Abstract: The maceral classification of Palaeozoic source rock in Tarim basin has been proposed based on the detailed microscopic examination. The hydrocarbon: generating potential of Palaeozoic source rock has been preliminarily evaluated by combining the petrology of each maceral with organic petrology. Cambrian source rock is dominated by secondary compositions, with low hydrocarbon-generating potential; Ordovician carbonate source rock is rich in alginate, with stronger hydrocarbon- generating capacity; the overmature Ordovician argillaceous source rock has low hydrocarbon-generating potential; Carboniferous argillaceous source rock is gas-prone while carbonate source rock is prone to generate both oil and gas.

Key words: Tarim basin, Palaeozoic, Source rock, Petrology, Characteristics, Source rock evaluation