MIGRATION AND ACCUMULATION OF CRUDE OILS FROMTAZHONG FILED, TARIM BASIN

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  • 1. Geological Logging Company of Huabei Petroleum Administration Bureau, CNPC, Renqiu 062552, China;2. Geochemistry Research Center of  Yangtze Universitry, Jingzhou 434023, China

Received date: 2003-05-19

  Revised date: 2003-08-22

  Online published: 2003-12-20

Abstract

The absolute amounts and relative distributions of neutral nitrogen compounds of crude oils  in Tazhong field showed clearer migration fractionation vertically and laterally. From deeper reservoir to slower reservoir in C-Ⅲ oil leg in Tazhong structure, the ratios of 1,8-dimethylcarbazole to 1,6-dimethylcarbazole,1,8dimethylcarbazole to 2,7dimethylcarbazole and 1,8dimethylcarbazole to 2,5-dimethylcarbazole increased from 2.06,2.54,6.83 to 2.87,3.92,14.71. In contract, migration fractionation of neutral nitrogen compounds of crude oils from C-Ⅰ oil leg and C-Ⅲ oil leg in Tazhong field weren't obvious based on migration parameters of neutral nitrogen compounds. Crude oils of C-Ⅰ oil leg and C-Ⅲ oil leg in Tazhong structure migrated laterally from well TZ411 to well TZ421 and well TZ402.

Cite this article

WU Zhang-wu, ZHANG Min, ZHANG Jun, FENG Min . MIGRATION AND ACCUMULATION OF CRUDE OILS FROMTAZHONG FILED, TARIM BASIN[J]. Natural Gas Geoscience, 2003 , 14(6) : 480 -483 . DOI: 10.11764/j.issn.1672-1926.2003.06.480

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