Huayuan Mica--Special for Oil drilling is preferably used in water-based and Oil-Well drilling operations as an additive mud chemical to prevent loss of circulation and seepage. Mica is specially added to seal-off the lost circulation zones. The platy structure of mica facilitates the overlapping of particles to form a layer or wall and acts as a sealent that bridges the openings. The use of Mica helps to seal porous formations and contributes to regain circulation keeping the solids in suspension.

The most common specification is 2-5mm diameters.