FRICTION-REDUCING COMPOSITIONS FOR USE IN DRILLING OPERATIONS Russian patent published in 2021 - IPC C09K8/35 C10M127/04 

FIELD: drilling operations.

SUBSTANCE: group of inventions relates to drilling for the development of natural resources. The friction-reducing composition includes one or more compounds described by the formula X_m-Ar-R_n, where Ar is mono- or a polycyclic aromatic fragment, each group X means a polar functional group that is not -(OC₂H₄)_z, where z is an integer at least equal to 1, each group R is independently selected from a branched or unbranched, saturated or unsaturated, substituted or unsubstituted C₁-C₅₀ hydrocarbon group, where n is an integer greater than or equal to 1, and where m is an integer greater than or equal to 0, if at least one group R is replaced by a functional group and/or the Ar group contains a heteroatom, and in other cases it is an integer greater than or equal to 1.

EFFECT: reduced torque and coefficient of friction during drilling operations, which leads to an easier drilling process, especially drilling long boreholes.

25 cl, 1 dwg, 4 tbl, 23 ex