柯克亚油气田烃源岩特征与油源对比  

The Comparison between Reservoir Rock Characteristics and Petroleum source in the Keyeya Oil Field

作　　者：陈瑞银[1] 徐思煌[1] 杜晓峰[1] 

机构地区：[1]中国地质大学研究生院,湖北武汉430074

出　　处：《新疆石油学院学报》2002年第2期1-5,14,共6页Journal of Xinjiang Petroleum Institute

摘　　要：塔西南地区柯克亚油气田的油源问题长期以来是一个难点。原油 (油环油 )和凝析油物性分析以轻质油为主 ,为陆相泥岩生油的特征。正构烷烃单体同位素特征相近 ,且不同油组的油环油单体烃同位素一致 ,上、下油组的凝析油同位素特征也相似 ,证实皆同源于非煤系地层。有机地球化学分析 ,柯克亚上油组和下油组的油环油中陆相高等植物有机质对油气生成起主要贡献 ,甾、藿烷比值较高 ,反映出海相油的特征。三维荧光测试分析进一步推断柯克亚凝析油气田的次生油气藏上第三系中新统及下第三系油气是多源的 ,具体表现为以侏罗系湖相泥岩为主源 。The source of petroleum has been the key of the petroleum exploration for a long period in Kekeya field, Southwestern Tarim Basin. Light oil is the subject component in crude oil and condense oil, which are characterized by continental facies. Monomer isotopes of normal paraffin have simple character, and so do the crude oil isotopes from different and condense oil isotopes from the same team. All of these maybe demonstrate that the source is non-coal layers. The analysis of organic geochemistry indicates that organic matter of continental facies higher plants, which exist in crude oil of Kekeya upper and under petroleum team, makes the major contribution to petroleum, that the higher ratio between steroid and hopanoid reflects characters of marine facies. Three dimensions fluorescene testing tells the fact that the condense petroleum from Miocene Series, Epitheca Tertiary and Hypo-tertiary, comes from same source. The source maybe constitutes lake facies mudstone of Jurassic System, and some does marine facies of Carbonic System Hypo-Dyassic.

关 键 词：柯克亚油气田 烃源岩 特征 油源 对比 

分 类 号：P618.130.2[天文地球—矿床学] TE12[天文地球—地质学]