Multivariate statistical analysis of diamondoid and biomarker data from Brazilian basin oil samples

被引：45

作者：

Azevedo, D. A. ^{[1
]}

Tamanqueira, J. B. ^{[2
]}

Dias, J. C. M. ^{[3
]}

Carino, A. P. B. ^{[1
]}

Landau, L. ^{[2
]}

Goncalves, F. T. T. ^{[4
]}

机构：

[1] Univ Fed Rio de Janeiro, Dept Quim Organ, BR-21941909 Rio De Janeiro, Brazil

[2] Univ Fed Rio de Janeiro, COPPE, LAMCE, BR-21941909 Rio De Janeiro, Brazil

[3] PETROBRAS, CENPES, BR-21941598 Rio De Janeiro, Brazil

[4] PGT Petr Geosci Technol Ltd, BR-20020902 Rio De Janeiro, Brazil

来源：

FUEL | 2008年 / 87卷 / 10-11期

关键词：

diamondoids; biomarkers; thermal maturity; statistical analysis; principal component analysis;

D O I：

10.1016/j.fuel.2007.11.005

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Diamondoids are compounds commonly found in oils. Highly stable, they are more resistant to thermal and biological destruction than other hydrocarbons. Diamondoid-derived parameters have been used to assess the degree of thermal evolution and the extent of secondary cracking of light oils and condensates and in the identification of mixtures of oils from distinct migration pulses. Twenty-one samples of oils from five sedimentary basins of Brazilian continental margin were selected and studied on diamondoids and biomarkers. The oil samples were analyzed by gas chromatography coupled to mass spectrometry and principal components analysis (PCA) aiming to correlate biomarker and diamondoid parameters. Diamondoid and biomarker ratios analyzed by PCA led to a more accurate assessment of the maturity of the oils. The combination of diamondoid data with biomarker parameters also allowed to rank the oils from one of the five basins (JX basin) as the most mature oils, while oils from another basin (JE basin) were classified as mixtures formed from different pulses of migration. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：2122 / 2130

页数：9

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