MICA

MICA have been preferably used in water-based and oil based oil-well drillings 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 sealant that bridges the openings. The use of mica helps to seal porous formations and contributes to regain circulation keeping the solids in suspension.

Property                                              Typical Values
Physical Appearance                 Pearly Silver, Grey Flakes.
Specific Gravity                                    2.2 – 2.8
Solubility in Water                             Insoluble
Bulk Density                                   270 – 320 kg/m3

Product Grade                        Median Particle Size(micron)
Fine                                                   400 – 850
Medium                                            850 – 1700
Coarse                                               1700 – 2400