摘要
从芳烃组成上，塔里木原油可划分为塔北台地相原油、塔中局限性海湾（泻湖）相原油和湖相油、煤成油四种成因类型。塔中原油以高二苯并噻吩系列（＞３０％）和低菲系列（＜１５％）为特征，区别于塔北海相原油；煤成油则以高联苯（＞２０％）、二苯并呋喃系列（＞５％）有别于湖相油。这些不同成因原油的烷基萘、菲异构体分布明显不同。海相油的１，２，５－／１，３，６－ＴＭＮ小于０．３，而湖相油和煤成油的此比值分别大于０．３和０．６。原油的１，２，７－／１，３，７－ＴＭＮ可识别源岩的地质时代。与海相油相比，陆相油尤其是煤成油的９－甲基菲占优势，与国外的研究结果不同。
he Tarim oils in origin can be divided into four oil families according to the composition of aromatic hydrocarbon:marine platform oil of northern Tarim Basin,restricted bay (lagoon) oil of central Tarim Basin,lacustrine oil and coal derived oil.Relative to Tabei marine oil,Tazhong oils have higher amount of dibenzothiophene homologues (>30%) and lower phenanthrenes (<15%),and to lacustrine oils,coal derived oils higher bipheny1 (>20%) and dibenzofuran (>5%) homologues.The distribution of alkylnaphthalene and alkyphenanthrene isomers shows significant difference in these various kinds of oils.The 1,2,5 /1,3,6, trimethylnaphthalene (TMN) values of marine oils are less than 0.3 and lacustrine oils and coal derived oils more than 0.3 and 0.6 respectively.The research result indicates that 1,2,7 /1,3,7 TNM ratio of these oils can be used to determine the geological age of their source rocks.Compared with marine oils,methyphenanthrenes of terrestrial oils,especially coal derived oils,are dominated by 9 methyphenanthrene generated by methylation of phenanthrene.
出处
《石油学报》
EI
CAS
CSCD
北大核心
1998年第3期33-37,共5页
Acta Petrolei Sinica
关键词
盆地
有机地球化学
原油
芳烃
油源对比
Tarim Basin organic geochemistry oil aromatic hydrocarbon oil source correlation geological age
