Self-emulsifying lubricating additives that effectively reduce the coefficient of friction in all types of water-based drilling fluids. These additives are recommended for use during the drilling of vertical, highly deviated and horizontal wells. They substantially decrease the risk of differential sticking while preserving the permeability of the productive formation during well completion. Additionally, they can be employed as effective anti-sticking agents.
Typical physicochemical properties:
| Parameter name | MDD DL-A |
MDD DL-B |
|---|---|---|
| Lubricity in spud mud at 0,5 % concentration | >87% | >78% |
| Lubricity in mineralized (110 kg/m3), weighted (1,30 kg/m3) biopolymer fluid at 3 % concentration | >60% | >50% |
| Density at 20 °C, kg/m3, not more than | 850 | |
| Kinematic viscosity at 50°C, mm2/s | 90 | |
| Pour point, °С, not more than | -20 | |
| Hydrogen index of 1% water extract, pH units | 5,0–8,5 | |
| Foaming activity, cm3, not more than | 5,0 | |
| Water, %, not more than | traces | |
| Organochlorine compounds, % | absence | |