1. Product introduction
This product is suitable for any water-based drilling fluid. Its main function is to reduce water loss and maintain good rheological properties of the system. It has salt resistance to 70000ppm and calcium resistance to 3000pppm.
2. Product performance index
| Item | Index | |
| appearance | Dark brown powder | |
| water content, % | ≤18.0 | |
| PH | 9.0～12.0 | |
| Water insoluble, % | ≤12.0 | |
| API filtration, mL | Fresh water slurry | ≤10.0 |
| Sodium chloride contaminated slurry | ≤15.0 | |
| High temperature and high pressure filtration, mL | Fresh water slurry | ≤30.0 |
| Sodium chloride contaminated slurry | ≤35.0 | |
| Apparent viscosity, mPa·s | Fresh water slurry | ≤15.0 |
| Sodium chloride contaminated slurry | ≤50.0 | |
3. Purpose and function
It is mainly used as filtrate reducer in petroleum drilling fluid. The temperature resistance of the product reaches 200 ℃, which will not cause viscosity increase in water-based drilling fluid and can strengthen the well wall.
4. Usage
The general dosage is 3-5%, which has strong compatibility with other drilling fluid materials.