Light Hydrocarbon Characteristics and Oil Family Classification of Crude Oils,Southwest Tarim Basin,Northwest China
Received date: 2014-12-16
Revised date: 2015-04-27
Online published: 2015-07-10
As an oil exploration candidate area,many light crude oilfields have been found in the Southwest Tarim Basin.Research on the light hydrocarbon geochemical characteristics of oil in the whole area has great significance for the oil exploration in this area.Using the GC equipment with PONA capillary column,we analyzed C6—C13 light hydrocarbons of 22 oil samples collected from Southwest Tarim Basin.Based on the composition,component ratio,MCyC6/nC7,and m-xylene/(m-xylene+ nC8+ nC9),22 crude oils were divided into three groups,i.e.,Bashituo light oil groups,Hetian River light oil groups,and Kekeya light oil groups.Results show there are three layers of source rocks at least,and some oils are mixed oils,based on the aromatic parameters and carbon isotope data.
Key words： GC; Crude oil; Light hydrocarbon; Genetic type; Southwest Tarim Basin
CUI Jing-wei，WANG Tie-guan，LI Mei-jun，GENG Feng，TANG You-jun，HU Jian . Light Hydrocarbon Characteristics and Oil Family Classification of Crude Oils,Southwest Tarim Basin,Northwest China[J]. Natural Gas Geoscience, 2015 , 26(7) : 1354 -1364 . DOI: 10.11764/j.issn.1672-1926.2015.07.1354
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