1. Product introduction
This product is suitable for high concentration brine based drilling fluid and plays the role of high temperature fluid loss reducer and high temperature viscosity reducer.
2. Product performance index
| Item | Data | |
| appearance | Dark brown powder | |
| water content, % | ≤15.0 | |
| Water soluble dry humic acid, % | ≥50.0 | |
| Apparent viscosity,mPa.s | normal atmospheric | ≤8 |
| 180 ℃×16 h | ≤15 | |
| Filtration reduction rate % | normal atmospheric | ≥50 |
| 180 ℃×16 h | ≥60 | |
| Viscosity reduction rate, % | normal atmospheric | ≥75 |
| 180 ℃×16 h | ≥60 | |
| 1min static shear force, pa | ≤1.0 | ≤1.0 |
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 assist in the formation of mud cake.
4. Usage
The general dosage is 3-4%, which has strong compatibility with other drilling fluid materials.