Do you know the usage of the well cementing additive defoamer agent ?

 During well cementing process, defoamer agent is frequently used to inhibit foam, defoam, and prevent gas migration, and has no harmful influence on other properties of cement slurry. It appears with white powder, and generally the defoamer agent is added before the field operation under room tempreture , and the normal dosage is 0.3%-0.5%(BWOC).Because of the chemical composition’s property of defoamer agent, it should be kept away from fire, damage and leakage during storage and transportation.