摘要
经用TSQ-70 GC/MS/MS仪器分析,从北部湾盆地不同埋深的生油岩样品中,检测出4-甲基甾烷系列。根据质谱特征、标样共注、文献对照,确认其结构为4α-甲基甾烷和4β-甲基甾烷系列。对该区4β-甲基甾烷的分布及热演化规律进行了讨论,提出4α-Me ααα(20R)/(4α-Me ααα+4β-Meααα)(20R)甾烷是一个成熟度参数。
By TSQ-70 GC/MS/MS mass spectrometer from the source rock samples tak- en at different burial depth in Beibu Gulf basin.They were indentified as 4α-methyl sterane and 4β-methyl sterane series from mass spectrum characteristic,injection standard with sample and comparison with other literatures.The distribution and thermal evolution of 4β-methyl steranes in the area are discussed,and 4α-Me ααα/ (4α-Me ααα+4β-Me ααα)(20R) is proposed as a maturity parameter.
出处
《中国海上油气(地质)》
1993年第5期35-39,共5页
China Offshore Oil and Gas(Geology)