摘要
塔西南地区是塔里木盆地石油勘探的后备区,整体考虑区域内已发现轻质原油的轻烃地球化学特征,对确定区域内原油成因类型和成藏过程具有重要意义。利用配置PONA毛细管柱的GC对区域内22件原油进行C6—C13轻烃族组成、族组分比值、MCyC6/nC7和m-xylene/(m-xylene+nC8+nC9)分析。结果表明,塔西南地区原油可划分为巴什托轻质油族群、和田河轻质油族群和柯克亚轻质油族群3个族群。族群划分结果显示原油存在3套烃源岩,部分原油存在混源特征,轻烃结果受原油芳烃和碳同位素分析支持。
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 col- umn,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.
出处
《天然气地球科学》
EI
CAS
CSCD
北大核心
2015年第7期1354-1364,共11页
Natural Gas Geoscience
基金
西北油田分公司项目"塔西南地区油源与成藏地球化学研究"(编号:KT2009-0904500030108)
国家科技重大专项"岩性地层油气藏成藏规律
关键技术及目标评价"(编号:2011ZX05001)联合资助
关键词
气相色谱
原油
轻烃
成因类型
塔西南地区
GC
Crude oil
Light hydrocarbon
Genetic type
Southwest Tarim Basin
