The surface tension of the filtrate at the boundary with kerosene reaches a value of 9.4 mN / m, and the contact angle, extrapolated to the bottomhole temperature, is close to 90 °C. Field tests of the additive have confirmed their high efficiency, both in terms of drilling and the quality of penetrating productive zones.
The solution, prepared with the use of the additive, provides a sharp decrease in the resistance to the movement of the drill string by improving the lubricating characteristics. The hydrophobization of the sludge impeded its dispersion, better removal and separation at treatment facilities, and a decrease in frictional forces also provided a 15-20% reduction in pressure losses.