注入流体矿化度与储层中的粘土矿物不配伍时，会引起粘土矿物水化膨胀和分散，导致渗透率降低。
When the salinity of injected fluid is not compatible with clay minerals in a reservoir, hydrated swell and dispersion of the clay minerals are caused, which makes permeability decreasing.
用该共聚物配制的防塌泥浆抑制页岩水化膨胀和水化分散的能力，随共聚物中丙烯腈含量增加而增强。
The ability of the copolymer to prevent shale hydration swelling and dispersion(cave-in) enhances as the acrylonitrile content in it increases.
羟基酸盐电离出的金属阳离子能抑制泥页岩 的水化膨胀和水化分散；
Metal cations ionized by the hydroxy-acid salt can inhibit the hydration expansion and hydration dispersion of the clay shale;
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