Polyanionic cellulose, PAC is easy soluble in water, having excellent properties of salt-resistance, Calcium,Magnesium-resistance and reduce filtration loss. It can be used in different drilling/completion drilling fluids, especially in salt water based drilling fluids, seawater based drilling fluids and saturated-brine drilling fluids,can reduce filtration very well.

Polyanionic cellulose Low Viscosity(PAC-LV)can be used in different drilling/completion drilling fluids, especially in salt water based drilling fluids, seawater based drilling fluids and saturated-brine drilling fluids, can reduce filtration very well. Because PAC having a very good solubility in water, excellent performance of salt-resistance and reduce filtration loss.