甾烷
The sterane isomerization maturity parameter and alkylphenanthrene index indicate that the maturity of oil sand is low. 甾烷的异构化成熟度参数、甲基菲指数均显示油砂成熟度低。
It is found that C(28)(20S)/C(28)(20R) ratio in triaromatic sterane seems to show good thermal evolution characteristics. 我们发现三芳甾烷C(28)（20S）／C(28)（20R）比值似乎显示了较好的热演化特征。
The crude oils of Chang 20 belong to typical immature oil which have odd even predominance and lower ratios of sterane and terpane maturity index. 从长20井低熟原油中检测到了一定量的28，30二降藿烷，这说明源岩形成于极度厌氧的环境。
We also bring forward a new method to recognize the different biological source for C29 sterane predominance using organic carbon isotope. 此外，本文还提出了用有机碳同位素来进一步区分C29甾烷优势生物来源的方法。
This paper mainly sums up recent identification of biomarks(sterane,diterpane)in the crude oil and source rock with GC/MS/DS. 本文报道我们近几年来利用色质联用仪对原油及生油岩中生物标志物（甾烷、萜烷）的定性分析鉴定。
重排甾烷
沟鞭藻
