金刚烷类风化规律及其在油源鉴别中的应用  

Weathering regularities of diamondoids and their applications to oil source identification

作　　者：韩彬[1,2] 曹磊[1] 郑立[1] 李景喜[1] 王小如[1] 

机构地区：[1]国家海洋局第一海洋研究所海洋生态研究中心,山东青岛266061 [2]大连理工大学海岸及近海工程国家重点实验,辽宁大连116024

出　　处：《深圳大学学报（理工版）》2011年第4期362-367,共6页Journal of Shenzhen University(Science and Engineering)

基　　金：国家自然科学基金资助项目(41076108)~~

摘　　要：以渤海常青号原油为研究对象进行综合模拟风化实验,通过气相色谱质谱对风化样品中金刚烷类进行检测;通过图谱和风化特征分析,探讨了原油中金刚烷类化合物的风化规律.结果表明,经历50d风化,渤海原油单金刚烷类稳定性为:四甲基单金刚烷>三甲基单金刚烷>二甲基单金刚烷>一甲基单金刚烷>单金刚烷;双金刚烷类稳定性为:二甲基双金刚烷>一甲基双金刚烷>双金刚烷,且双金刚烷类抗风化能力普遍强于单金刚烷类.经t检验和重复性限法分析,所筛选的23个金刚烷类诊断比值指标经历50 d风化仍保持良好的稳定性,可作为油源的鉴别指标.The Changqinghao oil from Bohai Sea was taken to make a comprehensive weathering simulation experiment,and the gas chromatography-mass spectrometry was used to detect the diamondoids in the oil samples.The weathering regularities of diamondoids in the oil samples were explored by analyzing the spectra and weathering features of diamondoids.After 50 days weathering,the analysis results show that the stabilities of adamantanes in the oil samples arranged in the order of magnitude are： tetramethyladamantane,trimethyladamantane,dimethyladamantane,methyladamantane and adamantane;and the stabilities of diamantanes arranged in the order of magnitude are： tetramethyldiamantane,trimethyldiamantane,dimethyldiamantane,methyldiamantane and diamantane.The anti-weathering abilities of diamantanes are greater than those of adamantanes in general.From the analysis results of t-test（student＇s t test） and repeatability limit method,it is shown that the 23 selected diagnositic ratios indices of diamondoids still maintained better stabilities after weathering for 50 days.These diognostic indices can be used for the identification of oil source.

关 键 词：有机地球化学 溢油事故 海面溢油风化 风化模拟 气相色谱质谱联用 金刚烷 溢油指纹鉴别 

分 类 号：X131.2[环境科学与工程—环境科学] TE122.1[石油与天然气工程—油气勘探]