Hydroxyethyl Cellulose (HEC) is a non-ionic polymer used to viscosify clear brine completion fluids.
It supports pseudoplastic flow, low gel build, stable fluid handling.
Share your brine type and target viscosity. We will suggest a simple test plan.

HEC is used in completion fluids to build viscosity in brines without relying on suspended solids. It helps shape flow behavior during mixing, pumping, displacement, and clean-up stages. It can support solids transport where needed, while keeping gel build low during static conditions. Results depend on brine type, density, temperature, solids content, plus shear history. Some systems also value acid-soluble clean-up after the job. A short lab test usually confirms the best approach. Send your brine type, target viscosity, temperature, and process details. We will recommend evaluation options.


Builds viscosity in monovalent or divalent brines.

Supports smooth shear response with limited gel build.

Acid-soluble behavior can help removal after the job.


Is HEC suitable for completion fluids?
Many HEC systems show good brine compatibility. Share your brine type for better matching.
HEC typically gives pseudoplastic flow with limited gel build.
HEC mainly changes rheology. Fluid-loss control often needs a separate strategy.
Some systems value its acid-soluble behavior for clean-up. Confirm with your fluid design.
TDS and SDS. COA is available by batch on request.
Send your brine type and targets. Get a clear sample plan.