准噶尔盆地南缘中二叠统烃源岩地球化学特征  

Geochemical Characteristics of Middle Permian Hydrocarbon Source Rocks in the Southern Margin of Junggar Basin

作　　者：杜治利[1,2] 刘洪军[3] 张枝焕[1] 

机构地区：[1]中国石油大学(北京)地球科学学院,北京102249 [2]中国地质调查局油气资源调查中心,北京100037 [3]西安石油大学地球科学与工程学院,陕西西安710065

出　　处：《西安石油大学学报（自然科学版）》2016年第3期1-7,共7页Journal of Xi’an Shiyou University（Natural Science Edition）

基　　金：国家科技重大专项项目(编号:2011ZX05002)

摘　　要：以准噶尔盆地南缘地区妖魔山与红雁池剖面中二叠统芦草沟组与红雁池组样品为例,采用有机地球化学及有机岩石学方法,系统分析中二叠统烃源岩有机质丰度、有机质类型及成熟度。研究结果表明:中二叠统芦草沟组和红雁池组烃源岩厚度大,表征有机质丰度的有机碳含量、氯仿沥青"A"、总烃等地球化学参数均显示达到较好—好烃源岩的标准,有机质类型以Ⅰ型与Ⅱ1型为主,显微组分多为孢子体、角质体以及藻类体,以富氢组分为主,有机质成熟度Ro在0.6%以上,而在凹陷深部二叠系成熟度更高,三叠纪早期达到生油高峰,到目前为止已经结束生烃。总体上,中二叠统烃源岩具有较好的生烃能力,具有勘探价值。Taking the rock samples from Lucaogou Formation and Hongyanchi Formation of Yaomoshan and Hongyanchi sections in the southern margin of Junggar Basin,the abundance,type and maturity of organic matter in the middle Permian source rocks are systematically analyzed using organic geochemical and organic petrology methods. It is shown that,the thickness of the source rocks of Lucaogou Formation and Hongyanchi Formation is great,and the geochemical parameters characterizing the abundance of organic matter such as organic carbon content,chloroform bitumen,total hydrocarbon content all reach to the standard of good to better source rock. The type of organic matter is mainly type I and Ⅱ1type,its microscopic components are mostly sporophore,cutinite and alginate,and hydrogen-rich components are of high content. The organic maturity（ Ro） is beyond 0. 60%,and the maturity of the Permian source rocks in the deep depression is higher. The early Triassic reached the peak of hydrocarbon generation,and at present,the hydrocarbon generation has been finished. On the whole,the middle Permian hydrocarbon source rocks have good hydrocarbon generating capacity,and they have exploration value.

关 键 词：烃源岩 地球化学特征 中二叠统 准噶尔盆地南缘 

分 类 号：TE122.1[石油与天然气工程—油气勘探]