Method for preparing thickened oil viscosity reducer based on gutter oil as raw material

Abstract

The invention relates to a method for preparing a thickened oil viscosity reducer based on gutter oil as a raw material. The method comprises the following steps of carrying out amidation reaction on gutter oil which is rich in source and is enriched in triglyceride and N,N-dimethyl-1,3-propanediamine to produce oleamide having terminal groups containing tertiary amide and reacting bimolecular oleamide having terminal groups containing tertiary amide with monomolecular 1,4-butanediol diglycidyl ether to produce Gemini amphiphilic molecules containing quaternary ammonium ions. The compound has thickened oil emulsifying capability. The preparation method is simple and low in cost and provides a new way to treat gutter oil.

Description

technical field

[0001] The invention belongs to the field of oil recovery additives, in particular to a method for preparing heavy oil viscosity reducer by using waste oil as raw material. Background technique

[0002] In recent years, most of my country's oil fields have entered the middle and late stage of development. With the continuous increase of heavy oil production, the characteristics of high density, high viscosity and poor fluidity have brought great difficulties to the extraction and transportation of crude oil. The key to the development of heavy oil is It lies in how to reduce the viscosity of crude oil and improve its fluidity. Although there are various viscosity reducers in the prior art, there is still a need for a low cost, stable and effective viscosity reducer in oil field production.

[0003] Waste oil is a non-edible oil with extremely poor quality and hygiene, and its peroxide value, acid value, moisture, carbonyl value, malondialdehyde and other indi...