新疆石油地质 ›› 2007, Vol. 28 ›› Issue (1): 116-118.

• 讨论与争鸣 • 上一篇    下一篇

南阳凹陷高蜡的原油成因

李水福, 张冬梅   

  1. 中国地质大学 资源学院石油系, 武汉 430074
  • 收稿日期:2006-05-12 出版日期:2007-02-01 发布日期:2020-07-29
  • 作者简介:李水福(1962-), 男, 江西玉山人, 副教授, 石油地球化学,(Tel)027-67884778(E-mail)lishf@cug.edu.cn.

Genesis of High-Wax Oil in Nanyang Sag

LI Shui-fu, ZHANG Dong-mei   

  1. Department of Petroleum Engineering, Faculty of Earth Resources, China University of Geosciences, Wuhan, Hubei 430074, China
  • Received:2006-05-12 Online:2007-02-01 Published:2020-07-29

摘要: 原油含蜡量高于8%者称为高蜡原油。传统观念认为,蜡为高分子量正构烷烃,源于高等植物。但近年来研究表明,蜡除高分子量正构烷烃外,还有异构烷烃和环烷烃,甚至有烯烃存在。并认为蜡不仅仅源于高等植物,低等水生生物和湖相藻类对蜡也是重要贡献者。南阳凹陷原油含蜡量高达40%~60%,烃源岩有机质以偏腐殖的混合型为主。所以,对高蜡原油的成因研究有重要意义。研究表明,该地区高蜡原油成因主要是陆源高等植物贡献,而低等水生生物居次要地位。

关键词: 南阳凹陷, 高蜡原油, 成因, 高等植物, 低等水生生物

Abstract: The oil that wax content is over 8% is called high-wax oil. Traditionally, it is considered that wax is normal alkane with high molecular weight, and it is originated from higher plant. Recent-year studies demonstrate that wax consists of not only high-molecularweight normal alkane, but also isoalkane, naphthene and olefin; and the origin of wax is not only from high plant, but also lower hydrobiont and lacustrine algae which are as important contributors to the wax. The wax content of crude oil in Nanyang sag ranges from 40% to 60%, and the type of organic matter is dominated by Type IIB~III. It is suggested that the high-wax oil is mainly originated from terrestrial higher plant, while lower hydrobiont is accidental.

Key words: Nanyang sag, high-wax oil, genesis, higher plant, lower hydrobiont

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