Polyanionic cellulose (PAC HV&LV) is an effective additive for reducing the A.P.I. filtration rate of many water based drilling fluids. PAC HV&LV may also be used to increase viscosity and improve wellhole cleaning in a wide variety of fluid environments. PAC HV&LV provides a cost effective means of improving water based drilling fluid performance.


Applicable Fluid Types:

PAC-HV&LV is applicable in the following general types of fluid systems.

  • Freshwater Muds
  • Seawater Muds
  • Saltwater Muds (up to and including saturation)
  • KCL Muds
  • Solids Free Brine (NACL and KCL)
  • Native Muds

PAC-HV&LV may be used efficiently in the indicated types of fluid to:

  • Reduce the filtration rate of the fluid
  • Increase and improve the fluid rheology (including suspension and hole cleaning)
  • Stabilize fluid rheology in the presence of contaminants
  • Coat and encapsulate cutting and solids in the drilling fluid, thereby inhibiting the swelling and disintegration of water sensitive solids.
  • Improve the character and consistency of wallcake, thereby reducing the potential for stuck pipe.


Packaged in 25 kg multiwall paper sacks.

Legislation and Handling Recommendations:

No Restricted by any regulatory agency.  Refer to the Material Safety Data Sheet (MSDS) for the product prior to use.