高邮凹陷北斜坡戴南组原油地球化学特征

发布时间：2018-02-10 16:45

  本文关键词： 高邮凹陷 北斜坡戴南组 原油 生物标志物 地球化学特征 油源分析　出处：《大庆石油地质与开发》2017年05期 　论文类型：期刊论文

【摘要】：高邮凹陷北斜坡戴南组油气来源复杂,通过对研究区戴南组已发现油藏原油系统采样,利用色谱—质谱分析技术,分析了原油的生物标志化合物特征,明确了油气来源。研究表明,依据饱和烃色谱及萜、甾烷指纹特征,戴南组原油在Pr/Ph值、规则甾烷、β—胡萝卜烷、伽马蜡烷含量等方面有较明显差别,反映了各类原油来自不同油源,可以划分为3类。Ⅰ类原油来自阜四段和阜二段混源油,母源以高等植物贡献为主,形成于半咸化环境,热演化程度较高;Ⅱ类原油主要来自阜四段成熟油,母源除了有高等植物的输入也有菌藻类等低等水生生物输入;Ⅲ类原油来自阜二段成熟油,母源以高等植物贡献为主,形成于较强的还原咸化环境。
[Abstract]:The source of oil and gas in Dainan formation on the northern slope of Gaoyou depression is complex. The characteristics of biomarker compounds of crude oil have been analyzed by means of chromatography-mass spectrometry (GC-MS) analysis. The source of oil and gas has been determined. The results show that the Pr/Ph value, regular sterane, 尾 -carrot and gamma-paraffin contents of Dannan formation crude oil are obviously different according to saturated hydrocarbon chromatography and the characteristics of terpene and sterane fingerprints. All kinds of crude oil come from different oil sources, which can be divided into three categories. Class I crude oil comes from mixed source oil of the fourth member and the second member of Fu formation. The main source is higher plant contribution, which is formed in the semi-salinized environment, and the thermal evolution is relatively high. Class 鈪，

本文编号：1500975