Description
Technical Parameters
Xanthan gum viscosifier is a powdered xanthan gum used in most waters, regardless of salinity or hardness. It is a dispersible, non-clarified, high-molecular-weight biopolymer. Xanthan gum provides excellent suspension and shear-thinning properties and can be used at temperatures up to 250°F. As DUO-VIS is subject to bacterial degradation, treatments with biocide are recommended to prevent fermentation. At mud pH values above 10.0, DUO-VIS becomes more sensitive to soluble calcium and may precipitate out of solution; however, it can still be added to most waters regardless of salinity.
Applications/Functions
- Viscosifies fresh water and brine-based fluids used for drilling, milling, underreaming, and gravel packing operations.
- Suspends bridging agents and weighting materials in fresh water and brine systems.
Advantages
- Highly effective viscosifier with minimal treatments producing significant results.
- Shear-thinning rheological profile for improved hydraulics.
- Provides excellent suspension without the need for clays.
- Minimizes the potential for formation damage.
- Stable up to 250°F.
Typical Properties
- Appearance: Yellow to white powder.
- Specific gravity: 1.6
Recommended Treatment
- A typical range is 0.1-2 ppb. ME-XC can be mixed directly into the system through the hopper at a rate of 20-25 minutes per sack.
- Maximum shear ensures quick hydration and avoids lumping and the formation of "fish eyes."
