石油幕式运移实验研究

在饱含水的填装玻璃微珠的玻璃板模型中注入染色煤油进行油运移模拟实验,观察孔隙介质中油形成优势运移路径的过程及在幕式油充注过程中路径的变化,取得了如下认识:第一,油运移优势路径一旦形成后,油再次运移基本是沿着原先形成的运移路径进行运移,而油运移路径的模式及其形态基本保持不变;第二,相同注入速率下油再次运移的前缘平均速率远大于第一次油运移的前缘平均速率,运移速率与注入速率基本呈正相关关系;第三,运移结束后路径收缩、油饱和度降低,但残余油仍能清晰地勾画出原运移路径时的形态。

An Experimental Study of Episodic Oil Migration

The oil migration experiment was made in water-saturated and glass bead-filled glass plate model injected with dye kerosene in order to observe the preferable pathway of kerosene migration and its change in episodic oil-packed process. The results show that after formation of the preferable pathway, the oil remigration always follows after the original pathway and the pattern and configuration of migration normally keep the way; at the same injected rate, the frontal average rate of oil remigration is faster than that of primary migration, and the remigration rate assumes direct correlation to the injected rate; the post-remigration pathway becomes narrow and shrink, oil saturation declines, but the original oil migration pathway recurs from the remained oil traces.