石油学报 ›› 1997, Vol. 18 ›› Issue (1): 44-48.DOI: 10.7623/syxb199701008

• 地质勘探 • 上一篇    下一篇

海相镜质体——海相烃源岩中一种重要生烃母质

肖贤明1, 刘德汉1, 傅家谟1, Ronald W. T. Wilkins2   

  1. 1. 中国科学院广州地球化学研究所;
    2. 澳大利亚CSIRO石油资源研究, 澳大利亚N.S.W 2113
  • 收稿日期:1995-08-06 修回日期:1995-12-04 出版日期:1997-01-25 发布日期:2010-09-06
  • 作者简介:肖贤明,1983年毕业于焦作工学院。现任中国科学院广州地球化学所研究员。通讯处:广州五山。邮政编码:510640。
  • 基金资助:
    国家“八五”科技攻关项目,课题编号85-102-15-04-02

MARINE VITRINITE—AN IMPORTANT HYDROCARBON SOURCE MATTER IN MARINE SOURCE ROCKS

Xiao Xianming1, Liu Dehan1, Fu Jiamo1, Ronald W. T. Wilkins2   

  1. 1. Guangzhou Institute of Geochemistry, Chinese Academy of sciences;
    2. CSIRO Division of Petroleum Resource, N.S.W.2113, Australia
  • Received:1995-08-06 Revised:1995-12-04 Online:1997-01-25 Published:2010-09-06

摘要: 应用现代有机岩石学与有机地球化学相结合的方法,通过对我国海相烃源岩的研究,确认了一种新的显微组分--海相镜质体。这种显微组分源于动物有机质,在还原-强还原条件下,经强烈生物降解作用形成。人工热模拟实验表明,海相镜质体成烃较晚,主成油期在镜质组Rr1.0%~1.30%范围内,产油率高达6%~8%,并以气态烃为主。海相镜质体反射率在高成熟阶段后可作为良好的成熟度作用指标。

关键词: 海相镜质体, 源岩, 成烃作用

Abstract: On the base of detailed research on marine source rocks in China by means of organic petrology and geochemistry, a new maceral-marine vitrinite has been confirmed.This maceral origins from faunal organic matter, were formed through the strong biochemical degradation of bacterials under the reducing to strong reducing conditions.Thermal-simulating test results showing that marine vitrinite is characterized by late hydrocarbon generation, and its oil peak occurs in the region of vitrinite Ro 1.0%~1.30%.Marine vitrinite is a good gas source material although its liquid hydrocarbon production is about 6%~8% of its total weight.The reflectance of marine vitrinite can be used as a good maturation level index after high maturation level stage.

Key words: marine vitrinite, source rocks, hydrocarbon generation