Crude oil viscosity reducer as well as preparation method and application thereof

Abstract

The invention discloses a crude oil viscosity reducer as well as a preparation method and application thereof and relates to the technical field of viscosity reduction of viscous crude oil. The method for preparing the crude oil viscosity reducer is simple in process, convenient in operation, and the cost of producing the crude oil viscosity reducer is low. The prepared crude oil viscosity reducer is good in viscosity reduction effect. The method for preparing the crude oil viscosity reducer in the embodiment of the invention comprises the following steps: (1) preheating cracked C9; (2) introducing the preheated cracked C9 into a fractionating tower for fractionating, thereby obtaining a fractionated light component mixture a; (3) introducing the mixture a prepared in the step (2) into a reaction kettle for carrying out a polymerization reaction four times; and (4) performing two-stage flashing on the mixture b obtained in the step (3), thereby obtaining a light component mixture c after flashing, wherein the obtained mixture c is the crude oil viscosity reducer.

Description

technical field [0001] The invention relates to the technical field of viscous crude oil viscosity reduction, in particular to a viscous oil viscosity reduction agent, a preparation method and an application thereof. Background technique [0002] With the rapid development of society and the increasing demand for energy, heavy oil, as a kind of abundant oil resource, is of great significance to alleviate the energy crisis. It is worth noting that although the reserves of heavy oil are greater than conventional crude oil, the viscosity of heavy oil is relatively high and the rheological properties are poor; The viscosity of degassed heavy oil at 50℃ may usually be greater than 20×10 4 mPa.s, so the conventional crude oil recovery method is not suitable for heavy oil recovery. [0003] In order to solve key problems such as viscosity reduction, friction reduction, and rheological improvement in heavy oil production, existing processes usually use methods such as heating to r...