|本期目录/Table of Contents|

[1]王芳,包建平,朱翠山.珠江口盆地惠州凹陷两类原油地球化学特征对比[J].地球科学与环境学报,2016,38(02):235-244.
　WANG Fang,BAO Jian-ping,ZHU Cui-shan.Comparison of Geochemical Characteristics of Two Kinds of Crude Oils in Huizhou Sag of Pearl River Mouth Basin[J].Journal of Earth Sciences and Environment,2016,38(02):235-244.
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《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

卷:
第38卷
期数:
2016年第02期
页码:
235-244
栏目:
基础地质与矿产地质
出版日期:
2016-03-15

文章信息/Info

Title:
Comparison of Geochemical Characteristics of Two Kinds of Crude Oils in Huizhou Sag of Pearl River Mouth Basin
文章编号:
1672-6561(2016)02-0235-10
作者:
王芳; 包建平; 朱翠山
1.长江大学 油气资源与勘探技术教育部重点实验室,湖北 武汉 430100;2.长江大学 地球环境与水资源学院,湖北 武汉 430100
Author(s):
WANG Fang;  BAO Jian-ping;  ZHU Cui-shan
1. Key Laboratory of Oil and Gas Resource and Exploration Technology of Ministry of Education, Yangtze University, Wuhan 430100, Hubei, China; 2. School of Earth Environment and Water Resources, Yangtze University, Wuhan 430100, Hubei, China
关键词:
有机地球化学; 原油; 生物标志物; 链烷烃; 萜烷; 甾烷; 惠州凹陷; 珠江口盆地
Keywords:
organic geochemistry;  crude oil;  biomarker;  chain alkane;  terpane;  sterane;  Huizhou sag;  Pearl River Mouth Basin
分类号:
P618.130.2;TE122.1
DOI:
-
文献标志码:
A
摘要:
依据珠江口盆地惠州凹陷不同类型原油样品中各类生物标志物分布与组成特征的分析结果,可以将其划分为煤成油和湖相油两大类。以HZ9-2-1井为代表的煤成油表现出强烈的姥鲛烷优势,C19~C26三环萜烷系列相对丰度呈现阶梯状依次降低,C24四环萜烷相对丰度远高于C26三环萜烷,藿烷系列C29降藿烷和C31升藿烷较为丰富,新藿烷(Ts和C29 Ts)含量很低,甾烷组成中C29规则甾烷和重排甾烷占绝对优势,这与典型煤成油的分子地球化学特征一致。湖相油中姥鲛烷优势较弱,C19~C26三环萜烷系列呈现以C21为主峰的正态分布,C24四环萜烷丰度与C26三环萜烷丰度相当,新藿烷和重排藿烷含量中等,伽马蜡烷含量极低,2-甲基藿烷与C304-甲基甾烷十分丰富且存在正相关关系。它们可以作为鉴别研究区原油成因类型的主要依据。
Abstract:
Based on the distributions and compositions of various biomarkers from different crude oils in Huizhou sag of Pearl River Mouth Basin, they can be classified into coalderived and lacustrine oil. The coalderived oils from well HZ9-2-1 have the characteristics of higher Pr/Ph value (more than 4.5), abnormally abundant C24tetracyclic terpane, steplike decreasing pattern for C19-C26  tricyclic terpanes, more abundant C29 norhopane and C31 homohopane, lower neohopanes in C27-C35 hopanes, and absolutely predominant C29 rearranged and regular steranes in C27-C29 steranes. These features are the main indicators to discriminate coalderived oils from other oils. However, for lacustrine oils, their Pr/Ph values are relatively low (less than 3.0), the abundances of C24 tetracyclic terpane and C26 tricyclic terpane are similar, the distribution of C19-C26 tricyclic terpanes is normal with the main peak of C21, neohopanes and rearranged hopanes are moderate, gammacerane index indicating paleosalinity is very low. It is noted that 2-methylhopanes and 4-methylsteranes indicating cyanobacteria and dinoflagellate input are very abundant respectively, and the variation of their relative abundances has a normal correlation, representing a specific ecosystem condition to be suitable for the growth of two kinds of microbes. They have an important role in oilsource correlation.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2015-10-12
基金项目:国家自然科学基金项目(41272169);国家科技重大专项项目(2008ZX05025-003-001)
作者简介:王 芳(1989-),女,湖北襄阳人,理学硕士研究生,E-mail:453411740@qq.com。
通讯作者:包建平(1962-),男,江苏张家港人,教授,博士研究生导师,工学博士,E-mail:bjp405@163.com。
更新日期/Last Update: 2016-03-28