Water-soluble thickened oil viscosity reducer as well as preparation method and application thereof

A water-soluble, viscosity-reducing agent technology, applied in chemical instruments and methods, drilling compositions, etc., can solve the problems of long viscosity-reducing time and low viscosity-reducing rate, and achieve improved anti-agglomeration and high viscosity-reducing rate. , enhance the effect of mutual exclusion

Active Publication Date: 2021-08-24
YANGTZE UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the above technical deficiencies, provide a water-soluble heavy oil viscosity reducer and its preparation method and application, and solve the technical problem of low viscosity reduction rate in the prior art and long time for viscosity reduction

Method used

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  • Water-soluble thickened oil viscosity reducer as well as preparation method and application thereof
  • Water-soluble thickened oil viscosity reducer as well as preparation method and application thereof
  • Water-soluble thickened oil viscosity reducer as well as preparation method and application thereof

Examples

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preparation example Construction

[0023] The specific embodiment also includes a preparation method of the above water-soluble heavy oil viscosity reducer, comprising the following steps: mixing cobalt dodecylbenzenesulfonate and a solvent at 25-40°C, and then adding an oxidant and a hydrogen donor Mixing, then continue to add alkali and emulsifier to mix, then add free nitrogen carbene and mix to obtain the water-soluble thick oil viscosity reducer.

[0024] The specific embodiment also includes the application of the above water-soluble heavy oil viscosity reducer or the water-soluble heavy oil viscosity reducer prepared by the above preparation method in the treatment of heavy oil.

Embodiment 1

[0033] This example proposes a water-soluble viscosity reducer for heavy oil, which is calculated by mass percentage, including 5wt% of free azacarbene, 2wt% of cobalt dodecylbenzenesulfonate, 30wt% of oxidant tert-butyl hydroperoxide, hydrogen donor Methanol 3wt%, alkali sodium hydroxide 1wt%, emulsifier Tween 20 1wt%, and the rest are solvent benzene, totaling 100%.

[0034] The water-soluble thick oil viscosity reducer of the present embodiment is obtained by the following steps:

[0035] Mix cobalt dodecylbenzenesulfonate and solvent at 25°C, then add oxidant and hydrogen donor to mix, then continue to add alkali and emulsifier to mix, then add free azacarbene and mix to obtain the water-soluble heavy oil adhesive.

Embodiment 2

[0037] This example proposes a water-soluble viscosity reducer for heavy oil. Calculated by mass percentage, free azacarbene 8wt%, cobalt dodecylbenzenesulfonate 1wt%, oxidant tert-butyl hydroperoxide 20wt%, hydrogen donor agent Methanol 5wt%, alkali 2wt%, emulsifier Span 20 0.5wt%, and the rest are solvent benzene, totaling 100%.

[0038] The water-soluble thick oil viscosity reducer of the present embodiment is obtained by the following steps:

[0039] Mix cobalt dodecylbenzenesulfonate and solvent at 30°C, then add oxidant and hydrogen donor to mix, then continue to add alkali and emulsifier to mix, then add free nitrogen carbene and mix to obtain the water-soluble heavy oil viscosity reduction agent.

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Abstract

The invention discloses a water-soluble thickened oil viscosity reducer as well as a preparation method and application thereof, and belongs to the technical field of thickened oil viscosity reduction exploitation. The water-soluble thickened oil viscosity reducer comprises 5-10 wt% of free N-heterocyclic carbene, 1-2 wt% of cobalt dodecyl benzene sulfonate, 15-30 wt% of an oxidizing agent, 1-5 wt% of a hydrogen donor, 1-2 wt% of an alkali, 0.5-1 wt% of an emulsifier and the balance being a solvent, wherein the total percentage is 100%. The invention also provides the preparation method of the water-soluble thickened oil viscosity reducer, wherein the preparation method comprises the steps: mixing the cobalt dodecylbenzene sulfonate with the solvent, then adding the oxidant and the hydrogen donor for mixing, then continuing to add the alkali and the emulsifier for mixing, and then adding the free N-heterocyclic carbene for mixing to obtain the water-soluble thickened oil viscosity reducer. In addition, the invention further provides the application of the water-soluble thickened oil viscosity reducer in thickened oil treatment. The viscosity reducer can effectively improve the viscosity reduction rate of thickened oil and accelerate the viscosity reduction speed.

Description

technical field [0001] The invention relates to the technical field of heavy oil viscosity reduction and exploitation, in particular to a water-soluble heavy oil viscosity reducer and a preparation method and application thereof. Background technique [0002] Sulfoxides and sulfones have high application value in the field of pesticides and medicines. As intermediates in the desulfurization process, they can be obtained by catalytic oxidative desulfurization of crude oil and removal of sulfur-based impurities. Methods for oxidizing thioethers to polysulfone organics are well established. In the field of heavy oil viscosity reduction, a water-soluble catalytic oxidation system that can be used for underground in-situ upgrading of heavy oil is designed, and the viscosity reduction reaction of heavy oil is carried out by low-temperature catalytic oxidation in formation reservoirs, and the in-situ underground Sulfoxide and sulfone products to achieve efficient viscosity reducti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/584C09K8/592
CPCC09K8/584C09K8/592
Inventor 颜学敏吴配月杨欢李颢马兆菲程仲富邓飞
Owner YANGTZE UNIVERSITY
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