Xanthan Gum XCD Polymer for Drilling Fluids
CAS Number: 11138-66-2
XCD (Xanthan Gum) polymer is a fermentation-derived polysaccharide biopolymer used as a viscosifier and suspension agent in water-based drilling fluids. It provides excellent low-shear-rate viscosity and yield point for efficient drill cuttings suspension and transport, while maintaining low circulating viscosity for good pump efficiency. XCD polymer is salt-tolerant and effective in both fresh water and saturated brine mud systems.
Technical Specifications
| appearance | Off-white to cream powder |
| purity (%) | ≥90 |
| pH (1% solution) | 6.0–8.0 |
| moisture content (%) | ≤15 |
| viscosity of 1% solution (mPa·s, 25°C) | 1200–1600 |
Applications
- Water-based drilling fluid viscosity building
- Drill cuttings suspension and transport
- Completion and workover fluid viscosity control
- Horizontal well cuttings transport enhancement
- Low-solids non-dispersed (LSND) drilling fluid systems
Key Features
- Outstanding low-shear viscosity for cuttings suspension
- Salt-tolerant — effective in saturated NaCl and KCl systems
- Flat rheological profile across a range of temperatures
- Biodegradable and environmentally acceptable biopolymer
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