鄂尔多斯盆地南部镇泾地区中生界原油地球化学特征及油源分析

邓南涛，张枝焕，王付斌，梁全胜，李宇翔，李文浩，陆骋，赵双丰，罗梦姣

doi:10.11764/j.issn.1672-1926.2013.03.604

天然气地球科学 >

2013 , Vol. 24 >Issue 3: 604 - 611

DOI: https://doi.org/10.11764/j.issn.1672-1926.2013.03.604

天然气地球化学

鄂尔多斯盆地南部镇泾地区中生界原油地球化学特征及油源分析

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1.中国石油大学(北京)油气资源与探测国家重点实验室，北京 102249；
2.中国石油大学(北京)地球科学学院，北京 102249； 
3.中国石油化工股份有限公司华北分公司，河南郑州 450006；
4.陕西延长石油（集团）有限责任公司研究院，陕西西安 710075

邓南涛（1983-），男，湖北潜江人，博士研究生，主要从事油气成因机理与分布预测研究.E-mail：dengnt2009@vip.qq.com.

收稿日期: 2013-01-04

修回日期: 2013-02-04

网络出版日期: 2013-06-10

基金资助

国家重大专项基金“鄂南低渗油藏成藏模式与勘探目标评价”（编号：2011ZX05002-001-003）；中国石化专项基金“鄂南中生界生烃条件及油源对比研究”（编号：G13KJ-11-ZS-QT-ZJ-0005）联合资助.

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Geochemical Characteristics and Oil-source Correlation of Crude Oils in the Zhenjing Area,Southern Ordos Basin

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1.State Key Laboratory of Petroleum Resources and Prospecting,China University of Petroleum,Beijing 102249,China;
2.College of Geosciences,China University of Petroleum,Beijing 102249,China;
3.North China Branch,China Petroleum and Chemical Co.Ltd.,Zhenzhou 450006,China;
4.Research Institute of Shaanxi Yanchang Petroleum(Group) Co.Ltd.,Xi′an 710075,China

Received date: 2013-01-04

Revised date: 2013-02-04

Online published: 2013-06-10

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摘要

系统采集了鄂尔多斯盆地南部镇泾地区中生界的烃源岩、原油及油砂样品，对它们抽提物中的饱和烃馏分进行GC-MS分析，研究饱和烃生物标志化合物组成特征，探讨研究区中生界原油的来源。研究表明：根据姥植比、C30重排藿烷和8β(H)-补身烷相对含量，镇泾地区中生界烃源岩可划分为A1、A2、A3、B 4类，原油可划分为Ⅰ、Ⅱ 2类。Ⅰ类原油来自深湖相沉积相带的长7油页岩（A1类），Ⅱ类原油来自深湖—半深湖沉积相带的长7暗色泥岩（A2类）。长7油页岩是鄂尔多斯盆地南部中生界的主力烃源岩，各油层组的原油主要来自该烃源岩。

关键词： 鄂尔多斯盆地南部; 镇泾地区; 地球化学特征; 油源对比; 生物标志化合物

本文引用格式

邓南涛，张枝焕，王付斌，梁全胜，李宇翔，李文浩，陆骋，赵双丰，罗梦姣 . 鄂尔多斯盆地南部镇泾地区中生界原油地球化学特征及油源分析[J]. 天然气地球科学, 2013 , 24(3) : 604 -611 . DOI: 10.11764/j.issn.1672-1926.2013.03.604

Abstract

Samples of the Mesozoic source rocks,crude oils and oil sands from Zhenjing area in the southern Ordos Basin were collected systematically.Gas chromatography-mass spectrometry (GC-MS) was performed on the saturated hydrocarbon fractions extracted from these samples in order to discuss their biomarker characteristics and the origin of Mesozoic crude oils.The results show that,on the basis of biomarker source parameter distribution,the Mesozoic source rocks in Zhenjing area can be divided into four types (A1,A2,A3 and B),and crude oils can be grouped into two types (Ⅰ and Ⅱ).Type I crude oils should be derived from Chang 7 oil shales that deposited in reducing,deep lacustrine environment.Type Ⅱ crude oils should be sourced from Chang 7 dark mudstones laid down in a sub-reducing to reducing,deep or semi-deep lacustrine environment.Apparently,oil shales in Chang 7,as the main source rocks in the southern Ordos Basin,contributed predominately to the crude oils in this area.

Key words： Southern Ordos Basin; Zhenjing area; Geochemical characteristics; -source correlation; Biomarkers

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