FIELD: chemistry.
SUBSTANCE: invention relates to drilling mud emulsifiers. Disclosed is a polyamide compound of formula (A), where a is an integer from 1 to 5, b and c are each independently selected from integers from 0 to 10, under the condition that b and c are not equal to 0 at the same time, d is an integer from 0 to 10, e is an integer from 1 to 5, Y is selected from H, X, -C(O)R1 or -C(O)R2 and Z is selected from -C(O)R1 or X, where R1 and R2 are linear or branched, saturated or unsaturated hydrocarbyl groups having 7 to 30 carbon atoms, and X is a carbonyl group obtained from a carboxylic acid. The invention also discloses a method of producing said compound, use thereof as an emulsifier in drilling mud and the respective drilling mud composition.
EFFECT: disclosed compound is an effective emulsifier at high temperature and pressure, which reduces the required amount of the emulsifier and the cost of the system; Y{O(CH2)e}a{NX(CH2)e}b{N[C(O)R2](CH2)e}c{NH(CH2)e}d NHZ (A).
15 cl, 2 dwg, 6 tbl, 11 ex
