High-molecular-weight, nondispersible, clarified xanthan gum viscosifier
Provides low-shear-rate viscosity and weight-material suspension for all water-based mud systems.
DUO-TEC viscosifier provides 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—i.e., with the yield point greater than the plastic viscosity. Shear-thinning fluids have low effective viscosities at the high shear rates encountered inside the drillstring and at the bit. This low-effective viscosity for minimal pressure losses and standpipe pressures enables optimized hydraulics and maximized ROPs. Conversely, at the low shear rates experienced in the annulus, DUO-TEC viscosifier enables the fluid to have a high effective viscosity for adequately cleaning the well and suspending cuttings.
Add DUO-TEC viscosifier slowly through the hopper to prevent lumping and minimize waste. It should be added at the rate of approximately one 25-lbm [11.3-kg] sack every 7 minutes. The time required for the product to yield its ultimate viscosity depends on salinity, temperature, and shear.
The addition of thermal stabilizers and other additives improves temperature stability in DUO-TEC viscosifiers from 250 to 300 degF [121 to 148 degC].
Bioassay information is available upon request. Handle as an industrial chemical, wearing protective equipment and observing the precautions described in the safety data sheet.
DUO-TEC viscosifier is packaged in 25-lbm [11.3-kg] or 55.1-lbm [25-kg], plastic-lined, multiwall, paper sacks.
Store at room temperature in a dry, well-ventilated area. Keep in original container. Keep container closed. Store away from incompatibles.
|Typical Physical Properties|
|Physical appearance||Cream-to-tan powder|