DUO-VIS/SUPER-VIS

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Biopolymer for increasing carrying capacity of water-based drilling fluids

 

DUO‐VIS/SUPER‐VIS xanthan gum is a high‐molecular‐weight biopolymer used for increasing the carrying capacity of water‐based drilling fluids. DUO‐VIS/SUPER‐VIS biopolymer has the unique ability to produce a fluid that is highly shear‐thinning and thixotropic.

The primary function of DUO‐VIS/SUPER‐VIS is increasing the low shear viscosity for cuttings transport and suspension. This product performs effectively in all water‐based drilling fluids. These include highly weighted to low‐solids freshwater, seawater, salt and heavy‐brine systems.

DUO‐VIS/SUPER‐VIS delivers an optimized rheological profile with elevated low‐shear‐rate viscosity and highly shear‐thinning characteristics with low “n” values. These characteristics frequently result in fluids with inverted flow properties, meaning a yield point that is greater than the plastic viscosity. Shear‐thinning fluids have low effective viscosities at the high shear rates encountered inside the drill string and at the bit. For HDD operations, this low effective viscosity minimizes pressure losses and standpipe pressures and allows optimized hydraulics and maximum penetration rates.

The low shear rates experienced in the annulus also delivers high effective viscosity to the drilling fluid, resulting in superb cleaning and cuttings suspension.

Advantages

  • Highly effective suspension enhance at comparatively small treatments
  • Provides a shear‐thinning rheological profile for improved hydraulics
  • Delivers minimum frictional pressure losses for additional hydraulic horsepower at the bit
  • Low, high‐shear‐rate viscosity for maximum penetration rates
  • Produces viscous laminar flow in the annulus for improved wellbore stability with maximum hole‐cleaning and suspension capacity
  • Easy to mix

Product Sheets

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