鄂尔多斯富县地区下古生界烃源岩地球化学特征  

Geochemical Characteristics of Lower Palaeozoic Hydrocarbon Source Rocks in Fuxian Exploration Area of Ordos Basin

作　　者：袁东山[1,2] 郜建军[2] 朱建辉[2] 缪九军[2] 

机构地区：[1]南京大学地球科学系,江苏南京210093 [2]中国石化石油勘探开发研究院无锡石油地质研究所,江苏无锡214151

出　　处：《石油天然气学报》2009年第4期58-61,共4页Journal of Oil and Gas Technology

基　　金：中国石油化工集团公司海相前瞻性项目(G13KT-07-KK-QT-EN-0030)

摘　　要：借助油气评价仪、色谱-质谱、稳定同位素质谱仪、显微镜等分析测试手段,从有机碳含量、热解参数、饱和烃的生物标志化合物特征、有机岩石学特征和碳同位素分布特征几方面资料,综合分析了鄂尔多斯盆地富县地区下古生界烃源岩的有机质丰度、类型和成熟度,对其进行了综合评价。结果表明:鄂尔多斯盆地富县地区下古生界海相烃源岩总体质量较差,但仍有中等质量的烃源岩存在;有机质类型主要为Ⅱ型和Ⅰ型,有机质演化程度高,基本上达到过成熟演化阶标。富县地区下古生界烃源岩母质来源主要为低等水生生物来源,沉积时较深水的还原缺氧的咸水沉积环境有利于有机质的保存。The geochemical characters of lower Palaeozoic hydrocarbon source rocks in Fuxian exploration area of Ordos basin,are studied by means of Rock Eval-Six,GC-MS,GC-MS-MAT and so on based on the comprehensive analyses of the organ carbon content,the content and conversion ratio of organic matter,parameters of pyrolysis,organic petrology parameters,biomarker characters of saturated hydrocarbon and stable carbon isotope composition,the organic matters abundance,type and maturity are studied,and the potential of generation hydrocarbon are evaluated.Lower Paleozoic Marine hydrocarbon source rocks in Fuxian exploration area of Ordos basin overall quality is bad,but there still have the quality of secondary hydrocarbon source rocks.Organic matters are of typeⅠand typeⅡ and at high-maturity stage.The source rocks were deposited in an reduction environment with deep and salt water and their bio-inputs were mostly lower aquatic organisms.

关 键 词：烃源岩 古生界 地球化学特征 鄂尔多斯盆地 

分 类 号：P618.13[天文地球—矿床学]