连续油相是最主要的石油初次运移相态。
The continuous oil phase is the main phase of primary migration.
初次运移的动力主要是异常高压，二次运移的动力主要是浮力和流体势差。
The driving force of primary migration is mainly abnormal high pressure and that of secondary migration is buoyance and fluid potential difference.
作者于1982年提出了油气初次运移量的计算公式并对几个盆地进行了试算。
A certain formulae of Primary migration amounts of oil was developed and some calculations were done for a few basins in 1982.
研究认为，延长组长7油层组由压实作用产生的过剩压力提供了油气初次运移的动力。
The study shows that the driving force of primary hydrocarbon migration in Yanchang formation is provided by the superfluous pressure produced when Chang-7 oil layer set was compacted.
源岩层的非均质性和微裂缝对初次运移十分不利，它们把油气滞留在源岩层内使其成为微油藏。
The heterogeneity and micro-fissures in source rocks are unfavorable to primary migration of oil and gas, which retained some oil gas within the source rocks forever as micro-reservoirs.
通过初次运移模拟实验证明了烃类在不同类型烃源岩中发生初次运移能够产生不同程度的物理碳同位素分馏效应；
The result of the primary migration simulation suggests that there are different carbon isotopic fractionation effects in the primary migration of different source rocks.
通过初次运移模拟实验证明了烃类在不同类型烃源岩中发生初次运移能够产生不同程度的物理碳同位素分馏效应；
The result of the primary migration simulation suggests that there are different carbon isotopic fractionation effects in the primary migration of different source rocks.
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