secondary migration

Carbonate rocks and sandstones are important gas oil reservoirs. The secondary pore space caused by the deep karstification during buried period is the effective space of gas oil migration and accumulation.

碳酸盐岩和砂岩是重要的油气储层，埋藏期深岩溶作用形成的次生孔隙是油气运移和聚集的有效空间。

Certain other factors are also involved at the secondary-migration stage.

在二次运移中也包括其他一些因素.

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 numerical results also show that the migration characteristics of the hot streaks are predominated by the relative slip velocity between hot fluid and cold fluid, secondary flow effect and buoyancy effect.

冷热流体间的滑移速度、二次流效应和浮力效应是影响热斑迁移特性的主要因素；

We can gain new conclusions by comparing the test results of short core and long core. Short core flow tests can not observe the damage of acidizing secondary reaction and particle migration, long core flow tests can effectively simulate acidic rock reaction.

通过对短岩心、长岩心酸化流动模拟试验结果的综合分析，得到如下新认识：短岩心试验观察不到酸化二次反应、微粒运移所造成的伤害；