The invention relates to the technical field of turbulent flow drag reduction, in particular to a preparation method of a high-drag-reduction type oil-soluble turbulent flow drag
reducer, which comprises the following steps: (1) cleaning glassware required by reaction with absolute ethyl
alcohol,
drying, and putting into a glove box; the glove box is subjected to
oxygen and water suction treatment, and
nitrogen is continuously introduced till the
oxygen content and the
water content in the glove box are both smaller than 100 ppm; (2) adding quantitative
heptane solution and triethyl aluminum into the flask in a glove box; adding a certain amount of an external
electron donor solution (cyclohexylmethyldimethoxysilane) and a Ziegler-
Natta catalyst after the mixture is stable, and adding a certain amount of an alpha-octylene
monomer after the mixture is uniformly mixed; (3) sealing the flask, and stirring for 24 hours under the conditions that the constant temperature is 20-60 DEG C and the stirring rotating speed is 300r / min; and (4) freezing and dehydrating the solution for 24 hours. The raw materials for preparing the drag
reducer are easy to obtain, the preparation process is simple, the drag
reduction rate can reach 20% and the molecular weight reaches 2.15 * 10 < 6 > g / mol when the drag
reducer is tested in a turbulent flow flat plate rheological device, the pipeline
transportation energy consumption can be effectively reduced, and the economic benefit is improved.