A Comparative Study of the Geochem ical Characters of Crude Oil after Microbe Degradation in Laboratory

DOU Qi-long; CHEN Jian-fa; XUE Yan-fen; WANG Jie; DUAN Wen-biao; GUO Jian-jun

Based on the analyses of the four crude oil samp les in Shengli oil fields, it is found that microbe can degradate the crude oil in laboratory. After the microbe degradation, the crude oil samp les have low saturated hydrocarbon contents and low saturated hydrocarbon / aromatic hydrocarbon ratios, and high aromatic hydrocarbon, non-hydrocarbon and asphaltene. It also shows that the normal paraffin hydrocarbon of crude oil has a deep degradation aftermicrobe degradation, and a low Pr /Ph value and a low ΣC_{21 -}/ΣC_{22 +}ratio. After the action of microorganisms on crude oil, some surface-active substances produced, and caused low surface tension.

A Comparative Study of the Geochem ical Characters of Crude Oil after Microbe Degradation in Laboratory

1. State Key Laboratory of Gas Geochemistry, Lanzhou Institute of Geology, Chinese Academy of Sciences, Lanzhou 730000;

2. Resource and Information College, Petroleum University of China, Changping Beijing 102249;

3. Beijing Gas Group Co.,Ltd. Gas Transmission and Distribution Branch Co., Beijing 100011;

4. Graduate School of the Chinese Academy of Sciences, Beijing 100039;

5. Yangtze University, Jingzhou Hubei 434023;

6. Institute of Microbe, Chinese Academy of Sciences,Beijing 100080

Received Date: 2004-05-13

Rev Recd Date: 2004-12-18

Publish Date: 2005-09-10

Key words:

Abstract: Based on the analyses of the four crude oil samp les in Shengli oil fields, it is found that microbe can degradate the crude oil in laboratory. After the microbe degradation, the crude oil samp les have low saturated hydrocarbon contents and low saturated hydrocarbon / aromatic hydrocarbon ratios, and high aromatic hydrocarbon, non-hydrocarbon and asphaltene. It also shows that the normal paraffin hydrocarbon of crude oil has a deep degradation aftermicrobe degradation, and a low Pr /Ph value and a low ΣC_{21 -}/ΣC_{22 +}ratio. After the action of microorganisms on crude oil, some surface-active substances produced, and caused low surface tension.

HTML

Reference (1)

[1]

1 Connan J,Dessort D. Biodegradation of crude oil in reservoirs[A].London:Academic Press,1984.299-355.

2 Chosson P,Connan J,Dessort D,Lanau C. In vitro biodergradation of steranes and terpanes:A clue to understanding geological situations[A].New Jersey:Prentice-Hall,Englewood Cliffs N J,1992.320-349.

3 Peters K E,Moldowan J M. The biomarker guide:Interpreting molecular fossils in petroleum and ancient sediments[M].New Jersey:Prentice-Hall,Englewood Cliffs,1993.233-265.

4 陈传平,梅博文,易绍金. 砂岩储层中原油微生物降解的模拟实验研究[J].沉积学报,1997,(01):135-140.

5 包建平,朱翠山,马安来. 生物降解原油中生物标志物组成的定量研究[J].江汉石油学院学报,2002,(02):22-26.

6 卢鸿,彭平安,徐兴友,张林晔. 济阳拗陷特殊生物降解油的初步研究[J].沉积学报,2004,(04):694-699.

7 黄第藩,李晋超. 利用气相色谱资料探讨几种成油生源构成[J].石油与天然气地质,1982,(03):251-259.

8 孟仟祥,房嬛,徐永昌,沈平. 柴达木盆地石炭系烃源岩和煤岩生物标志物特征及其地球化学意义[J].沉积学报,2004,(04):729-736.

9 梅博文,刘希江. 我国原油中异戊间二烯烃的分布及其与地质环境的关系[J].石油与天然气地质,1980,(02):99-115.

10 王铁冠. 生物标志物地球化学研究[M].武汉:中国地质大学出版社,1990.

11 Powell T,Mckirdy D M. Relationship between ratio of pristane to phytane,crude oil composition and geological environments in Australia[J].Nature,1973.37-39.

12 Seifert W K,Moldowan J M. Paleoreconstruction by biological markers[J].Geochimica et Cosmochimica Acta,1981.783-794.doi:10.1016/0016-7037(81)90108-3.

13 Fu J M,Sheng G Y,Xu J Y. Application of biological markers in the assessment of paleoenvironment of Chinese non-marine sediments[J].Organic Geochemistry,1990.769-779.

14 Huang D F,Li J C,Zhang D J. Maturation sequence of continental crude oil in hydrocarbon basins in China and its significance[J].Organic Geochemistry,1990.521-529.

15 雷光伦. 微生物采油技术的研究与应用[J].石油学报,2001,(02):56-63.

16 雷光伦,郭云尧,郑家明. 高温微生物提高采收率实验研究[J].油气地质与采收率,2002,(4):15-20.

A Comparative Study of the Geochem ical Characters of Crude Oil after Microbe Degradation in Laboratory

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Article Metrics

Proportional views

Related