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陆东凹陷上侏罗统生油岩样品饱和烃色质分析表明，重排甾烷随井深出现含量下降的逆转现象，表明热演化不完全是这类化合物形成的主要控制因素。重排甾烷的分布与岩石中的粘土矿物组成关系也不密切，意味着各种粘土矿物的酸性催化作用无明显差别。经研究发现，重排甾烷的形成与沉积环境的氧化还原性有关。在Ｐｒ／Ｐｈ小于０．５的缺氧强还原地层中由于甾烯碳骨架的酸性重排作用受到抑制，因而所形成的重排甾烷很少；随Ｐｒ／Ｐｈ增加，沉积环境变为弱氧化—氧化时，重排甾烷含量显著增高，表明在成岩作用过程中沉积物中的含氧性是这类化合物形成的主要因素
The chromatographic analysis of the saturated hydrocarbons in the Upper Jurassic source rocks in Luodong Sag shows that the reversal of the descending steranes appears as the well depth decreases, indicating that thermal evolution is not completely the main controlling factor for the formation of these compounds. The distribution of rearranged steranes is not closely related to the composition of clay minerals in rocks, suggesting no significant difference in the acid catalysis of various clay minerals. It has been found that the formation of rearrangement steranes is related to the redox properties of sedimentary environment. The rearrangement sterane is less formed due to the acid rearrangement of the steroidal carbon skeleton in the hypoxia-reduced formation where Pr / Ph is less than 0.5; the depositional environment becomes weaker with increasing Pr / Ph During oxidation-oxidation, the content of rearranged steranes significantly increased, indicating that the oxygen content of sediments during diagenesis is a major factor in the formation of these compounds