Polyanionic cellulose SNPH-PATS of the HB, BB grades
Purified polyanionic cellulose. It is available in two grades:
low-viscosity PAC NV; high-viscosity PAC BB
Advantages
- High thermal and salt resistance, which is relative to standard carboxymethyl cellulose.
- Promotes the formation of a thin, dense, elastic and low-permeability filtration crust.
- Resistant to bacteriological aggression.
Purpose
Polyanionic cellulose as a filtration reducing agent is effective both in fresh and mineralized solutions.
PAC NV is used to reduce the filtration of drilling fluids without changing the rheological properties.
The PAC BB regulates the water loss and rheological characteristics of the drilling fluid.
The recommended concentration is from 1.5 to 5 kg/m³.
| Indicator name | Indicator value | |
|---|---|---|
| grade HB | grade ВВ | |
| Product appearance | Powder from white to brown color | |
| Mass fraction of moisture (%), not more than | 8 | |
| The pH value is 1% of the aqueous solution of the reagent, units | 6,5-9,0 | |
| Filtration rate, cm³, not more than | 10 | |