Viscosity and Filtration Control Aid for Water Based Drilling Fluids

CMC- HV Carboxy methyl cellulose is an effective additive for reducing the A.P.I. filtration rate in most water based drilling fluids. CMC HV also increases mud viscosity and provides a cost effective means of improving water based drilling fluid performance.

CMC-HV spec

Applicable Fluid Types:

CMC-HV 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


CMC-HV 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.

 Typical Product Application

The following information recommends typical treatment of CMC-HV in various types of fluid systems.

CMC HV treatment


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.