The major transporting layers for secondary migration are sand-beds of Es3, unconformable surface and fault. 油气在烃源岩中的初次运移和在储集层中的二次运移是油气运移过程中连续而特点不同的两个阶段。
An effective method for solving a partial differential equation of secondary hydrocarbon migration is put forward. 本文给出了一种高效率求解油气二次运移偏微分方程的方法。
The complicated fault-block reservoirs in Dongying Depression are the secondary trap deposits which had been migrated from deep to shallow after original reserves broken down. 东营凹陷的复杂断块油气田是深层原生油气藏被断层破坏后，油气经二次或多次运移至浅层的断层伴生圈闭而形成的次生油气藏。
