摘要
作者对5个盆地18个轻质油样品作了C_1—C_7轻烃分析,检测出29种单体轻烃。通过轻烃组成特征研究,认识到石蜡指数(PI_1)和庚烷值(PI_2)作为成熟度的指标,不受沉积盆地类型影响;C_6,C_7烃类族组分受母质类型影响较大。陆相(含煤地层)有机质生成轻质芳烃(苯)的含量比海相有机质要高。新疆塔里木盆地沙参2井原油的轻烃分析资料表明,该井油源岩为海相沉积。
Light hydrocarbons(LH) of 18 light oils have been analysed and twenty-nine individual LH compounds were determined. Through analysing compositional characteristics ofLH, it is discovered that Paraffin Index(PI_1) and Heptane Value (PI_2) is still a good indicator of maturity in different sedimentary basins;hydrocarbon-type composition betweenC_6 and C_7 copmpound groups were greatly affected by organic matter types, and the content of aromatic hydrocarbon(benzene) generated by organic mateer of non-marine(coalseries) is more than that of LH derived from marine sources. The light hydrocarbon dataOf the crude oil from the well Shacan-2 indicate that the oil-source rock is produced inmarine deposit.
出处
《江汉石油学院学报》
CSCD
北大核心
1989年第1期10-16,共7页
Journal of Jianghan Petroleum Institute
关键词
轻质原油
烃分析
地球化学特征
light oils
light hydrocarbons
maturity
organic matter types
oil-source rock
