The filtration loss reducer works mainly through the following mechanisms:
A: omni-directional plug mud cake in the capillary hole to make it smooth and dense;
Two: increase the negative charge density of mud cake to form a strong polarized water layer;
Three: adsorption of clay crystal particles on the side of the formation of bridging reduction of capillary pore diameter;
Iv. Increase filtrate viscosity;
Five: change the wettability of the mud cake capillary.
