流度缓冲液的前缘的流度等于或小于表面活性剂的流度，而它的后缘的流度接近于水的流度。
The leading edge of the buffer has a mobility equal to or less than the surfactant, whereas the trailing edge has a mobility close to water.
河口坝与前缘砂坝接触，酸性水容易进入河口坝，河口坝砂体中的长石受酸性水溶蚀，形成次生孔隙。
The mouth bar contacts with the frontal sand bar and acidic water can easily flow into mouth bar. The feldspar in sand bodies of mouth bar is dissolved and generates secondary pores.
结果表明：非达西流使水驱前缘推进速度加快，使油井见水早；
The result shows that waterflood frontal movement of non Darcy flow is fast, resulting in earlier water breakthrough;
应用推荐