Poly Anionic Cellulose

Polyanionic cellulose or PAC is a water-soluble derivative obtained by etherification of natural cellulose. It is a colorless to slightly yellow powder, tasteless & non-toxic.

PAC has good heat stability, salt-tolerance & anti-microbial activity.

PAC is widely used as a drilling fluid additive in oil & gas industry as it improves performance & efficiency of their drilling operations.

Poly Anionic Cellulose

Poly Anionic Cellulose

Benefits of using PAC in oil & gas drilling fluids :
  • Enables control of fluid loss & prevents excessive leakage of the drilling fluid into the formation
  • PAC increases the viscosity & rheology of the drilling fluid, which helps to maintain the stability & consistency of the fluid
  • As PAC can form a thin & solid filter cake on the wellbore wall, it reduces the risk of hole shrinkage & collapse & also improves the lubricity and adhesion of water-based fluids.
  • Protection of the drill bit in enabled as it reduces the friction & wear during drilling operations
  • Suspension & dispersion of solid particles in the drilling fluid are enhanced & this prevents sedimentation & clogging
  • Biodegradability makes PAC an environment friendly product for use and generally regarded as safe.
Poly Anionic Cellulose

High purity & DS of Polyanionic cellulose makes it an ideal thickener, rheology modifier, capable of being used in slat & freshwater environments.

LAPAC-LV reduces the volume of the system without significant increase in viscosity despite high solid content.

PAC fluid mud can be prepared in high salt medium clay & shale inhibition dispersion. It provides excellent drilling mud & workover fluids & fracturing fluid is also efficient. Thus, PAC finds applications in drilling fluids, as fluid loss inhibitor & as fracturing fluid.

Poly Anionic Cellulose
It is also used in paint, paper, textiles, cosmetics & food applications.
Grade Apparent Viscosity Filtrate volume in seawater/KCl Moisture (%) DS
LAPAC-HV Minimum 50 Maximum 23 ml Maximum 10 Minimum 0.9
LAPAC-LV Maximum 40 Maximum 16 ml Maximum 10 Minimum 0.9