粘土矿物在多孔介质中的运移及水中化学物质对它的影响

Migration of Clay Minerals in Porous Medium and the Effect of Chemicals in Water on It

本文讨论了不同粘土矿物性质及颗粒大小对其运移的影响,并探讨了不同化学物质对粘土膨胀性的影响及其机理,得出阳离子半径越大所产生的电场场强越大,对稳定蒙脱土有利,阳离子半径小、电荷多,对稳定高岭土有利,空间几何作用对粘土矿物稳定也有一定的影响。小颗粒粘土比大颗粒粘土所造成的堵塞严重,粘土在特定条件下有可能提高注水的波及系数。

This paper discusses the effect of different characteristics and grain sizes of clay minerals on their migration and the effect of different chemicals on the inflation of the clay and the mechamism. The following research results have been obtained: the larger the cation radius, the greater the intensity of electrical field, which is beneficial to stabilizing smectite, cations which have small radius and more charges are beneficial to stabilizing Kaolin. The function of space geometry will exert certain influence on the stabilization of clay minerals. Clay of small size grains brings out more serious plugging than that by clay of larger size grains. Under certain conditions clay may raise the flooding sweep efficiency.