Polyanionic cellulose (PAC)
Polyanionic cellulose (PAC) is a kind of nonionic cellulose ether. The PAC polymer featured the properties of high purity, high DS, particularly high viscosity (PAC-HV), or low viscosity (PAC-LV). These products are demi-natural polymer additive, thickening agent, filtrate reducer.
Polyanionic cellulose is an indispensable product for drilling mud making. It is a high purity product. The water solution of this PAC polymer powder is transparent and viscid. As a water-soluble polymer, polyanionic cellulose dissolves immediately in cold/hot water. And it can be used as a thickening agent, rheology controller, bond, stabilizer, colloid protector, suspending agent, and filtrate reducer.
Polyanionic cellulose is a good drilling mud additive. It is also an important material for confecting well liquid, a high mud volume product that featured high acid-resistance and salt-resistance ability. PAC is a good filtrate reducer with the capacity of increasing viscosity and anti-high temperature (150°C) in the freshwater, seawater, or even saturated brine well-completion liquid. This polymer is suitable for confecting the completion fluid with these 3 kinds of water above.