Lignite-HMTA Thinning Agent (Drilling Fluid)
Causticized lignite treated with hexamethylenetetramine (HMTA) used as a classic thinning and deflocculant agent for freshwater and saltwater water-based drilling muds. Effectively reduces plastic viscosity and yield point at elevated temperatures, maintaining optimal rheology during deep drilling operations. Performs within a pH 9–11 operating range.
Technical Specifications
| appearance | Dark brown powder or granules |
| treat rate | 0.5–3.0 kg/m³ drilling mud |
| moisture content | ≤ 12% |
| pH (1% solution) | 9.5–11.0 |
Applications
- Freshwater and saltwater water-based drilling muds
- High-temperature deep well drilling operations
- Controlling rheology in high-solids muds
- Lignosulfonate-treated mud systems
- Polymer and lignosulfonate combination systems
Key Features
- Lignite-HMTA Thinning Agent provides reliable rheology control at temperatures up to 180°C
- Reduces plastic viscosity and yield point without significantly impacting fluid loss
- Compatible with lignosulfonate, chrome-free, and polymer-based mud systems
- Cost-effective classical treatment with decades of field-proven performance
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