INDUSTRIAL SYNTHESIS AND EVALUATION OF THE HYDRODYNAMIC EFFICIENCY OF POTENTIAL AGENTS FOR DECREASING RESISTANCE IN PETROLEUM PIPELINESG. V. Nesyn,a V. N. Manzhai,b and A. V. Ilyushnikovb UDC 66.091:665.7.035.6:532.517.4 The influence of anti-turbulence additives on the decrease in the hydrodynamic resistance in main pipelines is investigated. The dependence of the Thoms effect on the physicochemical properties of a polymer obtained on an industrial plant is analyzed. The method for evaluating the efficiency of potential agents of decreasing the hydrodynamic resistance is proposed. aTomsk Polytechnic University, Tomsk, Russia; email: Nesyn@gvn.tomsk.ru; bInstitute of Petroleum Chemistry, Siberian Branch of the Russian Academy of Sciences, Tomsk, Russia; email: firstname.lastname@example.org. Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 76, No. 3, pp. 142-146, May-June, 2003. Original article submitted September 6, 2002.