海拉尔盆地乌尔逊—贝尔凹陷白垩系原油地球化学特征及油源对比

揭异新; 袁月琴; 王斌

doi:10.11781/sysydz2007010082

海拉尔盆地乌尔逊—贝尔凹陷白垩系原油地球化学特征及油源对比

doi: 10.11781/sysydz2007010082

1.
中国地质大学资源学院, 武汉 430074
2. 贵州省六盘水市113地质队, 贵州六盘水 553001

基金项目: 中国石油天然气股份有限公司科技攻关项目(4100176)

详细信息

作者简介:
揭异新(1983- ),男(汉族),湖北崇阳人,硕士研究生,主要从事油气地球化学研究.

中图分类号: TE122.1
计量
- 文章访问数: 756
- HTML全文浏览量: 65
- PDF下载量: 364
- 被引次数: 0
出版历程
- 收稿日期: 2006-06-12
- 修回日期: 2006-11-29
- 刊出日期: 2007-01-28

GEOCHEMICAL CHARACTERISTICS OF THE CRETACEOUS OIL AND CORRELATION OF OIL TO SOURCE ROCK IN WUERXUN AND BEIER DEPRESSIONS,THE HAILAER BASIN

1.
The Faculty of Earth Resources, China University of Geosciences, Wuhan, Hubei 430074, China
2. The 113 Brigade of Geologic Prospecting, Liupanshui, Guizhou 553001, China

摘要

摘要: 对海拉尔盆地乌尔逊凹陷和贝尔凹陷共21个原油和油砂样品进行GC、GC-MS和非烃含氮化合物测试分析,根据饱和烃、轻烃和甾萜类生物标志化合物的分析资料,全面剖析了海拉尔盆地乌尔逊-贝尔凹陷白垩系原油的地球化学特征,并通过油源对比确定了其主力烃源层。研究结果表明,海拉尔盆地贝尔凹陷和乌尔逊凹陷原油存在2种成因类型:第一类油饱和烃C₁₇—C₂₃具正构烷烃优势,呈单峰型分布,Pr/Ph>1(1~2.88),C₂₇—C₂₉甾烷呈"V"型分布,伽马蜡烷含量较低,表征淡水湖相沉积环境;第二类油具有饱和烃低碳正构烷烃优势,Pr/Ph<1,孕甾烷、C₂₇重排甾烷含量较低,伽马蜡烷不发育,表征煤系地层原油。油源对比揭示,原油来自2套不同沉积环境的源岩,展示了海拉尔盆地良好的烃源条件。
- 地球化学特征 /
- 生物标志化合物 /
- 油源对比 /
- 乌尔逊凹陷 /
- 贝尔凹陷 /
- 海拉尔盆地
Abstract: Based on the GC,GC-MS and nonhydrocarbon nitric chemical compound analytical data of 21 samples of crude oil and hydrocarbon-bearing rocks,the geochemical characteristics of the Cretaceous oil in Wuerxun and Beier depressions in Hailaer Basin were studied,and the main source rock for the oil was determined by oil-source rock correlation.The studied results reveal that there are two kinds of crude oil in Wuerxun and Beier depressions.One kind shows a dominance of n-alkanes in C₁₇-C₂₃ and distribution in unimodality.Its Pr/Ph is higher than 1(1～2.88).The"V"shaped distribution of C₂₇-C₂₉ steranes and low gammacerane indicate a fresh water lacustrine source rock.The other one shows a dominance of n-alkanes in light hydrocarbons and low C₂₇ sterane.Its Pr/Ph is less than 1 and it lacks gammacerane.This kind of oil mostly stemmed from the coal measure strata.According to the results of oil-source rock correlation,the crude oils in Wuerxun and Beier depressions stemmed from two kinds of depositional setting.It indicates that there are good conditions of source rock in Hailaer Basin.
- geochemical characteristics /
- biomarker oil-source rock correlation /
- the Wuerxun depression the Beier depression /
- the Hailaer Basin /

HTML全文

参考文献(16)

[1]	冯志强,任延广,张晓东等.海拉尔盆地油气分布规律及下步勘探方向[J].中国石油勘探,2004,9(4):19～23
[2]	王青海,陈守田,唐建人.海拉尔盆地油气勘探开发前景[J].中国石油勘探,2002,7(3):16～19
[3]	孟祥军,金成志,杨平等.从海拉尔盆地勘探历程看大庆外围中小型盆地勘探前景[J].中国石油勘探,2005,10(3):23～25
[4]	冯志强,张晓东,任延广等.海拉尔盆地油气成藏特征及分布规律[J].大庆石油地质与开发,2004,23(5):16～19
[5]	张吉光,彭苏萍,张宝玺等.乌尔逊-贝尔断陷油气藏类型与勘探方法探讨[J].石油勘探与开发,2002,29(3):48～50
[6]	张吉光,彭苏萍,林景晔.乌尔逊凹陷沉积成岩体系与油气分布[J].古地理学报,2002,4(3):74～82
[7]	侯启军,冯子辉,霍秋立.海拉尔盆地乌尔逊凹陷石油运移模式与成藏期[J].地球科学--中国地质大学报,2004,29(4):397～403
[8]	张文宾,陈守,周俊宏.海拉尔盆地油气分布规律及成藏模式[J].大庆石油学院学报,2004,28(6):8～10
[9]	Li M,Larter S,Stoddart D,et al.Fractionation of pyrrolic nitrogen compounds in petroleum during migrations:Derivation of migration-related geochemical parameters[A].In:Cubitt J M,England W A eds.The geochemistry of reservoirs[M].London:The Geological Society,1995.103～123
[10]	李素梅,张爱云,王铁冠等.原油中吡咯类化合物的分离方法研究[J].石油实验地质,1999,21(3):278～282
[11]	李振广,冯子辉,宋桂侠等.松辽盆地原油芳烃分布、组成特征与原油类型划分[J].石油与天然气地质,2005,26(4):494～500
[12]	秦建中,陈建平,张吉光.海拉尔盆地原油地球化学特征与成因分类[J].石油勘探与开发,2003,30(5):39～42
[13]	王永霖,张吉光,秦建中.海拉尔盆地巴彦呼舒凹陷未熟油勘探前景[J].石油实验地质,2005,27(3):238～243
[14]	蔡勋育,朱扬明.川东南官渡构造中侏罗统原油地球化学特征及油源[J].石油实验地质,2006,28(4):380～384
[15]	Li Sumei,Li Maowen,Pang Xiongqi,et al.Geochemistry of petroleum systems in the Niuzhuang South Slope of Bohai Bay Basin--part 1:source rock characterization[J].Organic geochemistry,2003,34(3):389～412
[16]	张枝焕,曾艳涛,张学军.渤海湾盆地沾化凹陷渤南洼陷原油地球化学特征及成藏期分析[J].石油实验地质,2006,28(4).54～58