Polyanionic cellulose is uses for many different technical applications. These PAC Polyanionic cellulose uses are depends mainly on its reaction with water content. It can use either alone or in conjunction with other components in the system to create thickening, water-binding, suspension, stabilizing and emulsifying characteristics. It also widely used in Oil drilling fluid control additives, especially in salt water wells and offshore drilling applications. PAC polyanionic cellulose uses as a combined filtration controller having HV and LV properties makes this material ideal in low solid mud, designed for fast penetration.