甾烷

The sterane isomerization maturity parameter and alkylphenanthrene index indicate that the maturity of oil sand is low. 甾烷的異構(gòu)化成熟度參數(shù)、甲基菲指數(shù)均顯示油砂成熟度低。

It is found that C(28)(20S)/C(28)(20R) ratio in triaromatic sterane seems to show good thermal evolution characteristics. 我們發(fā)現(xiàn)三芳甾烷C(28)（20S）／C(28)（20R）比值似乎顯示了較好的熱演化特征。

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. 從長(zhǎng)20井低熟原油中檢測(cè)到了一定量的28，30二降藿烷，這說(shuō)明源巖形成于極度厭氧的環(huán)境。

We also bring forward a new method to recognize the different biological source for C29 sterane predominance using organic carbon isotope. 此外，本文還提出了用有機(jī)碳同位素來(lái)進(jìn)一步區(qū)分C29甾烷優(yōu)勢(shì)生物來(lái)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. 本文報(bào)道我們近幾年來(lái)利用色質(zhì)聯(lián)用儀對(duì)原油及生油巖中生物標(biāo)志物（甾烷、萜烷）的定性分析鑒定。

重排甾烷

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