There are many kinds of crude oil drag reducers. We look up the relevant literature to introduce the mechanism of crude oil drag reducers. Some researchers have experimented that the effective components are polyalkenes, hydrocarbons, and the solvents are mixtures of glycol, butanol and other polyols.The viscous flow of fluid will produce resistance, especially in high-speed turbulence, the energy loss caused by resistance is very large.Crude oil drag reducer can reduce the resistance of crude oil pipeline transportation. It can reduce the energy consumption of crude oil caused by turbulence when the temperature is higher than the pour point of crude oil. That is to say, under the same pressure difference, a large amount of crude oil can be delivered in the same pipeline.

The effect of crude oil drag reducer on the viscosity of crude oil is very small. The drag reduction is not caused by the change of viscosity of crude oil, but by the reduction of the resistance caused by turbulence in the fluid or on the pipe wall.When the linear polymer compound flows, under a certain flow rate, it can be arranged along the flow direction, forming numerous lines consistent with the flow direction. The fluid can only move forward in the line, inhibiting the development of turbulence, thus greatly reducing the friction.