摘要
通过全油GC／MS分析，揭示了冀中地区文安油田分子组成上的非均质性。研究认为，文安油田至少存在两类不同成因类型的原油（Ⅰ类和Ⅱ类）。Ⅰ类原油具有较高的甾／藿比，生物标志化合物（甾烷、伽马蜡烷、4-甲基甾烷）含量相对较高，芳香族化合物（甲基菲、三芳甾烷以及甲基二苯并噻吩）含量相对较低；Ⅱ类原油具有较低的甾／藿比，生物标志化合物含量相对较低，芳香族化合物含量相对较高。两类原油的分布具有规律性：Ⅰ类原油分布于南区的议论堡构造带；Ⅱ类原油分布于北区的史各庄构造带。研究表明，文安油田至少存在两个油气富集体系。
The whole oil GC/MS analysis shows that molecular constituents of oil in the Wen＇ an oilfield in the Jizhong area have certain heterogeneity. According to this study, it is believed that at least two genetic types of oil （ Type I and Type II ） occur in the Wen＇ an oilfield. The Type I oil is characterized by relatively high sterane-hopane ratio, relatively higher content of biomarkers （ sterane, gammacerane and 4-methyl sterane） and re- latively lower content of aromatic compounds （methylphenanthrene, triaromatic sterane and methyldibenzothio phene）. In contrast,the Type II oil features in lower sterane-hopane ratio,relatively lower content of biomarkers and relatively higher content of aromatic compounds. The distribution of these two types of oil shows certain regu- larity,with the type I oil occurring in the Yilunpu structural belt in the southern part and the Type II oil distributed in the Shigezhuang structural belt in the northern part. At least two petroleum systems occur in the Wen＇ an oilfield.
出处
《石油与天然气地质》
EI
CAS
CSCD
北大核心
2010年第3期321-326,334,共7页
Oil & Gas Geology
基金
国家自然科学基金项目(40772091)
关键词
非均质性
成因类型
原油
文安油田
冀中地区
heterogeneity, genetic type, crude oil, Wen＇ an oilfield, Jizhong area
