松辽及外围盆地煤成油的有机地球化学特征  

ORGANIC GEOCHEMICAL CHARACTERISTIC OF THE COAL-FORMED OIL IN SONGLIAO AND ITS PERIPHERAL BASINS

作　　者：王雪[1] 迟宏一[1] 

机构地区：[1]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712

出　　处：《大庆石油地质与开发》2001年第5期3-4,共2页Petroleum Geology & Oilfield Development in Daqing

摘　　要：煤成油系指煤和煤系地层中集中和分散的陆源有机质 ,在煤化作用的同时所生成的液态烃(石油 ) ,它作为一种特殊的油气资源 ,日益引起地质和地球化学工作者的高度重视。随着大庆勘探开发的进一步深入 ,在松辽盆地、海拉尔盆地、鸡西盆地、汤原断陷均发现有煤系地层分布及煤成油。利用族组成、色谱、色谱 质谱、同位素等综合分析技术 ,对其性质进行分析研究 ,得出松辽及外围盆地煤成油的地球化学主要特征 :饱和烃含量高 ,沥青质含量低 ;姥鲛烷占明显的优势 ;烷烃组成中支链和环烷烃成分多 ;C2 9甾烷含量丰富 ,γ 蜡烷丰度极低 ;Coal formed oil refers to the liquid hydrocarbon(oil) generates from terrigenous organic matter which is concentrated or dispersed in coal and coal system formation with coalification. As a special kind of hydrocarbon resource, it attracts more and more attention of geologists and geochemists. With the further exploration and development in Daqing, coal measure strata and coal formed oil are found in Songliao Basin, Hailaer Basin, Jixi Basin and Tangyuan Rift. This paper analyzes its property using group composition, chromatogram, chromatogram mass spectrum and isotope analysis and concludes the geochemical characteristic of the coal formed oil in Songliao and its peripheral basins: the oil has a high saturation, low asphaltene content and much pristane; paraffine consistence contains much side chains and cycloparaffinic hydrocarbon; the C 29 sterane content is rich; the richness of γ cerotane is quite low; carbon isotope is heavy.

关 键 词：煤成油 有机地球化学特征 族组成 碳同位素 松辽盆地 陆源有机质 煤化作用 

分 类 号：P618.130.2[天文地球—矿床学] P593[天文地球—地质学]