石油与天然气地质 ›› 1998, Vol. 19 ›› Issue (1): 29-34.doi: 10.11743/ogg19980105

• 论文 • 上一篇    下一篇

原油的厌氧细菌降解作用及其产物特征

李赞豪1, 李季2, 向龙斌2, 夏遵义3, 张远成3   

  1. 1. 地质矿产部石油地质综合大队, 湖北荆州434100;
    2. 中原油田地质勘探开发研究院, 河南濮阳457001;
    3. 地质矿产部石油地质综合大队, 湖北荆州434100
  • 收稿日期:1997-10-25 出版日期:1998-03-25 发布日期:2012-01-18

DEGRADATION OF ANAEROBIC BACTERIA IN CRUDE OIL AND ITS PRODUCT PROPERTY

Li Zanhao1, Li Ji2, Xiang Longbin2, Xia Zunyi3, Zhang Yuancheng 3   

  1. 1. Comprehensive Research Institnte of Petroleum Geology, CNSPC, Jingzhou, Hubei;
    2. Geological Institute of Petroleum Exploration and Development, Zhongyuan Oilfields, Puyang, Henan;
    3. Compreheusive Research Institute of Petroleum Geology, CNSPC, Jingzhou, Hubei
  • Received:1997-10-25 Online:1998-03-25 Published:2012-01-18

PDF (PC)

1200

被引次数

32

摘要：

原油的厌氧细菌降解作用和喜氧降解作用一样普遍存在,但它不仅仅只具破坏作用,而且能再生某些新的烃类,并能形成新的油气藏。我国许多所谓的浅层过渡气实际上是原油厌氧细菌降解作用的结果。原油厌氧细菌降解作用的产物具有甲烷碳同位素轻(δ13C1<-5.5%)、乙烷碳同位素特别轻(δ13C2<-4.0%)和单烃化合物碳同位素为负值异常(δ13Cn-3.7%～-5.3%)的特点。塔中地区的天然气至少混有20%以上的菌解甲烷。

关键词: 厌氧细菌, 降解作用, 产甲烷菌, 原油

Abstract:

It is universal that both the anaerobic bacterial degradation and oxidative bacterial degradation of crude oil exist in the hydrocarbon evelution.They do not only distroy some hydrocarbons,but also reproduce some new hydrocarbons,and even result in new hydrocarbon pools for exploration.A lot of shallow transitional gas pools actually resulted from anaerobic degradation.The products of the anaerobic bacterial degradation of crude oil possess light methane carbon isotope(δ13C1<-5.5%),very light ethane carbon isotope (δ13C2<-4.0%)and the negative anomaly of carbon isotope of separate hydrocarbons (δ13Cn<-3.7%～-5.3%).Natural gas produced in central Tarim Basin contains at least 20% bacterial degrated methane.