生物降解作用对储层抽提物中多甲基取代萘分布的影响

黄海平; 杨杰; LarterS R

Volume 28 Issue 3

May 2003

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HUANG Hai-ping, YANG Jie, Larter S R, 2003. Biodegradation Effect on Distributions of Multiple Methylated Naphthalenes in Reservoir Extracts. Earth Science, 28(3): 281-288.

Citation:

HUANG Hai-ping, YANG Jie, Larter S R, 2003. Biodegradation Effect on Distributions of Multiple Methylated Naphthalenes in Reservoir Extracts. Earth Science, 28(3): 281-288.

HUANG Hai-ping, YANG Jie, Larter S R, 2003. Biodegradation Effect on Distributions of Multiple Methylated Naphthalenes in Reservoir Extracts. Earth Science, 28(3): 281-288.

Citation:

HUANG Hai-ping, YANG Jie, Larter S R, 2003. Biodegradation Effect on Distributions of Multiple Methylated Naphthalenes in Reservoir Extracts. Earth Science, 28(3): 281-288.

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Biodegradation Effect on Distributions of Multiple Methylated Naphthalenes in Reservoir Extracts

HUANG Hai-ping^{1, 3
,},
YANG Jie^{1, 2},
Larter S R³

1.
Department of Energy Resources & Geology, China University of Geosciences, Beijing 100083
2.
Institute of Petroleum Exploration and Development, China National Petroleum Corporation, Beijing 100083
3.
Fossil Fuels and Environmental Geochemistry, University of Newcastle-uponTyne, Drummond Building, Newcastle-upon-Tyne NE1 7RU, UK

Received Date: 2002-06-15
Publish Date: 2003-05-25

Abstract

Abstract

Detailed geochemical analysis has been carried out on reservoir extracts from the Es 3 reservoir of the Leng 43 block of the Lengdong oilfield, Liaohe basin. Bulk compositions and aliphatic biomarker parameters indicate that these residual oils from three different oil columns are biodegraded at varying degrees. The biodegradation degree increases from the top of oil columns to the bottom of oil columns with excellent gredient variations. Comparison of the distributions of trimethylnaphthalenes (TMNs), tetramethylnaphthalenes (TeMNs) and pentamethylnaphthalenes (PMNs) at various biodegradation levels indicate that biodegradation controls their occurrence and distribution. The susceptibility of individual isomer of TMNs, TeMNs and PMNs to biodegradation has been determined on its relative abundance variation during biodegradation. The results show that these thermal dynamic stable structures are more susceptible to bacterial attack than these thermal unstable structures, suggesting biodegradation completely differs from thermal dynamic process. This study reveals that after moderate biodegradation these maturity parameters based on thermal stability of isomers are invalid and the ratios between easily biodegraded and refractory structures, in turn, can be used as new geochemical indicators to assess the degree of biodegradation.
- methylated naphthalenes,
- reservoir extract,
- maturity,
- biodegradation,
- Liaohe basin

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References(15)

References

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