准噶尔盆地中Ⅲ区块原油地球化学特征与油源分析  

Geochemical Characteristics of Crude Oil in the Ⅲ Block in Junggar Basin and Its Oil-Source Correlation

作　　者：秦黎明[1] 张枝焕[1] 李伟[2] 袁东山[1] 杨永才[1] 

机构地区：[1]中国石油大学石油天然气成藏机理教育部重点实验室,北京102249 [2]中国石油化工股份有限公司国际勘探开发公司,北京100083

出　　处：《地质科技情报》2007年第6期59-65,共7页Geological Science and Technology Information

基　　金：国家重点基础研究(973)发展计划项目(2006CB202303)

摘　　要：通过对准噶尔盆地中Ⅲ区块的原油或油砂抽提物饱和烃与芳烃气相色谱-质谱分析,研究了原油及油砂抽提物中的正构烷烃、类异戊二烯烷烃、β-胡萝卜烷以及甾萜烷烃系列化合物的分布特征,对原油类型进行了划分,并对其油源做了初步的分析。研究表明,中Ⅲ区块原油可划分为3种类型:第Ⅰ类包括永6井与永9井白垩系吐谷鲁群原油及油砂抽提物,主要来自于中二叠统乌尔禾组烃源岩;第Ⅱ类包括永1井西山窑组和三工河组原油及油砂抽提物、永2井西山窑组油砂抽提物及永3井西山窑组和三工河组原油,为二叠系和侏罗系烃源岩生成的混源油;第Ⅲ类包括永6井西山窑组油砂抽提物和永2井西山窑组下部原油,主要来源于侏罗系烃源岩。The geochemical characteristics of saturated and aromatic hydrocarbons from crude oils or core extracts in the Ⅲ block in Junggar Basin have been investigated by gas chromatography-mass spectrum analysis. The types of crude oil have been divided and oil-source correlations have been analyzed preliminarily through the biomarkers such as n-alkanes, isoprenoids, β-carotene, terpanes and steranes. It is shown that there are three different types of crude oils or core extracts in the area： the type Ⅰ of crude oil （Well Yong 6 and Well Yong 9 K1tg） is derived from Permian mudstone （P2w）, the type Ⅱ （Well Yong 1 J2x and J1s, Well Yong 2 J2x and J1s, Well Yong 3 J2x and J1s）, from Permian and Jurassic mudstone and the type Ⅲ （Well Yong 6 J2x, Well Yong 2 J2x bottom）, from Jurassic mudstone.

关 键 词：准噶尔盆地 中Ⅲ区块 生物标志物 原油类型 油源对比 

分 类 号：TE133.1[石油与天然气工程—油气勘探]