DОN-K 40 / DON-K 70

Inverse emulsion emulsifiers

DON-K 40 and DON-K 70 inverse emulsifiers are solutions of organic synthesis products in a hydrocarbon solvent

Designed to produce reverse emulsions used in the treatment of injection wells when carrying out measures to equalize the injectivity profile for enhanced oil recovery, as well as for the preparation of drilling fluids and killing fluids for oil wells. When treating production wells, it helps to increase the coverage of the reservoir in thickness, reduce the water cut in products, wash out residual oil in the oil-saturated part of the reservoir and increase oil recovery from the reservoir in the treated area. An excellent regulator of the structural-rheological properties of inhibited drilling fluids.
The working concentration of the emulsifier is 2 — 4%, depending on the application’s conditions.

Product Specification

DONK 40 DON-K 70
1 Appearance Homogeneous liquid Homogeneous liquid
2 Mass fraction of the main substance, % 40 — 55 70 — 85
3 Thermal stability of the emulsion at 90 ºС, h, not less 24 24
4 density at 20 0С, g/cm3 0,83 — 0,91 0,83 — 0,91
5 Mass fraction of organochlorine compounds, ppm Not more than the lower limit of determination of organically bound chlorine in accordance with the test method
6 Pour point,  0С, not higher minus 40 minus 10
7 Kinematic viscosity at 200С, cSt., not higher 50


The product is packed in 200 kg polyethylene barrels. The use of another type of container can be agreed with the consumer.

Shelf life — 12 months.