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A method for preparing heavy oil viscosity reducer by using gutter oil as raw material

The technology of a viscosity reducer for heavy oil and waste oil is applied in the directions of chemical instruments and methods, drilling compositions, etc., can solve problems such as low cost, and achieve the effects of low cost, improved fluidity and simple process

Active Publication Date: 2018-01-09
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are various viscosity reducers in the prior art, there is still a need for low cost, stable and effective viscosity reducers in oilfield production

Method used

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  • A method for preparing heavy oil viscosity reducer by using gutter oil as raw material
  • A method for preparing heavy oil viscosity reducer by using gutter oil as raw material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0007] (1) Add 100g of waste oil and 0.3molN,N-dimethyl-1,3-propanediamine into a reaction vessel with a water separator, add 0.1g of sodium hydroxide, mix them, and put them in an oil bath at 160°C Medium constant temperature reaction, the time is 5h, when no water comes out, cool to room temperature for use;

[0008] (2) Put the above reaction product into a reaction vessel with a stirring device, pass nitrogen gas for 15 minutes, drive out the air in the reactor, raise the temperature to 105°C, and slowly drop 0.15mol ethylene glycol diglycidyl ether into it with a dropping funnel , The reaction time was 4h, and the product was obtained. The molecular weight of the product was determined to be 825 by mass spectrometry.

Embodiment 2

[0010] (1) Add 150g of waste oil and 0.3molN,N-dimethyl-1,3-propanediamine into a reaction vessel with a water separator, add 0.1g of sodium hydroxide, mix them, and put them in an oil bath at 160°C Medium constant temperature reaction, the time is 5h, when no water comes out, cool to room temperature for use;

[0011] (2) Put the above reaction product into a reaction vessel with a stirring device, pass nitrogen gas for 15 minutes, drive out the air in the reactor, raise the temperature to 105°C, and slowly drop 0.15mol ethylene glycol diglycidyl ether into it with a dropping funnel , The reaction time was 4h, and the product was obtained. The molecular weight of the product was determined to be 830 by mass spectrometry.

Embodiment 3

[0013] (1) Add 200g of waste oil and 0.3mol N,N-dimethyl-1,3-propanediamine into a reaction vessel with a water separation device, add 0.1g of sodium hydroxide, mix, and place in 160°C oil React at constant temperature in the bath for 5 hours. When no water comes out, stop heating and cool to room temperature for later use;

[0014] (2) Add the above reaction product into a reaction vessel with a stirring device, pass nitrogen gas for 15 minutes, drive out the air in the reactor, raise the temperature to 105°C, and slowly drop 0.15mol of neopentyl glycol diglycidol into it with a dropping funnel Ether, the reaction time was 4h, and the product was obtained. The molecular weight of the product was determined to be 970 by mass spectrometry.

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/584
CPCC09K8/584
Inventor 方龙麻金海
Owner QINGDAO UNIV
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