Thickened oil viscosity reducer as well as preparation method and thickened oil viscosity reduction method thereof

A heavy oil viscosity reducer and heavy oil technology, applied in chemical instruments and methods, petroleum industry, liquid carbon-containing fuels, etc., can solve the problems of low viscosity reduction efficiency, achieve reduced space expansion, enhanced fluidity, and good The effect of dispersion stability

Inactive Publication Date: 2019-06-04
长沙而道新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention has the characteristics of low cost and simple process, but has the problem of low viscosity reduction efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0029] The preparation method of described viscous oil viscosity reducer, comprises the following steps:

[0030] S1: Add acetic acid, distilled water, and absolute ethanol to the reaction vessel and stir, then add vinyltriacetoxysilane, hydrolyze for 3-4 hours at room temperature, then add nano-titanium dioxide, heat up to 40-55°C, use 200-260r Stir at a speed of 3.5-4 hours per minute, filter and dehydrate to obtain solid matter, wash with absolute ethanol for 4-6 times, and dry in vacuum at 30-40°C for 8-12 hours to obtain surface-modified nano-silica;

[0031]S2: Add octadecyl acrylate, propylene oxide, phthalimide, dodecyl dimethyl betaine, methanol, and distilled water into the reaction vessel, stir evenly, heat up to 50-60°C, and feed Nitrogen, add modified nano-silica, heat to 65-80°C for 30-45 minutes while stirring, add potassium hydroxide dropwise at this temperature, and react for another 2-3 hours, cool after the reaction, and add absolute ethanol , stir evenly, ...

Embodiment 1

[0034] A thick oil viscosity reducer, comprising the following components in parts by weight: 5 parts of stearyl acrylate, 4 parts of acetic acid, 5 parts of propylene oxide, 3 parts of potassium hydroxide, dodecyl dimethyl betaine 15 parts, 6 parts of nano-titanium dioxide, 3 parts of vinyltriacetoxysilane, 4 parts of phthalimide, 18 parts of methanol, 200 parts of absolute ethanol, and 40 parts of distilled water.

[0035] The preparation method of described viscous oil viscosity reducer, comprises the following steps:

[0036] S1: Add acetic acid, distilled water, and absolute ethanol to the reaction vessel and stir, then add vinyltriacetoxysilane, hydrolyze for 3 hours at room temperature, then add nano-titanium dioxide, raise the temperature to 45°C, and stir at a speed of 260r / min for 3.5 h, filtering and dehydrating to obtain a solid substance, washing with absolute ethanol for 5 times, and vacuum-drying at 40°C for 10 hours to obtain surface-modified nano-silica;

[0...

Embodiment 2

[0040] A thick oil viscosity reducer, comprising the following components in parts by weight: 7 parts of stearyl acrylate, 2 parts of acetic acid, 6 parts of propylene oxide, 1 part of potassium hydroxide, dodecyl dimethyl betaine 24 parts, 8 parts of nano-titanium dioxide, 4 parts of vinyltriacetoxysilane, 6 parts of phthalimide, 25 parts of methanol, 150 parts of absolute ethanol, and 50 parts of distilled water.

[0041] The preparation method of described viscous oil viscosity reducer, comprises the following steps:

[0042] S1: Add acetic acid, distilled water, and absolute ethanol into the reaction vessel and stir, then add vinyltriacetoxysilane, hydrolyze for 3.5 hours at room temperature, then add nano-titanium dioxide, heat up to 55°C, and stir at a speed of 200r / min After 3.8 hours, filter and dehydrate to obtain a solid substance, wash with absolute ethanol for 6 times, and then vacuum-dry at 30°C for 12 hours to obtain surface-modified nano-silica;

[0043] S2: Ad...

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PUM

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Abstract

The invention discloses a thickened oil viscosity reducer and a preparation method thereof and a thickened oil viscosity reduction method, and belongs to the technical field of petroleum processing. The thickened oil viscosity reducer comprises the following components: octadecyl acrylate, acetic acid, epoxypropane, potassium hydroxide, dodecyl dimethyl betaine, nano titanium dioxide, vinyl triethoxy silane, phthalimide, methanol, absolute ethyl alcohol and distilled water; and the weight part ratio of nano titanium dioxide to vinyl triacetoxyl silane to phthalimide is 5-8: 1-4: 2-6. The nanotitanium dioxide, the vinyl triacetoxyl silane and the phthalimide are adopted to form a reinforcing system, so that the viscosity reduction rate of the thick oil viscosity reducer is improved.

Description

technical field [0001] The invention belongs to the technical field of petroleum exploitation, and in particular relates to a heavy oil viscosity reducer, a preparation method thereof and a heavy oil viscosity reducer method. Background technique [0002] More than 100 years ago, heavy oil fields were discovered in the United States, and heavy oil began to attract the attention of various countries. Heavy oil reserves are very rich in the world, which is about 5 times that of ordinary crude oil reserves. my country also has a lot of heavy oil resources, and heavy oil has been found in many oil fields, such as Xinjiang, Daqing, Shengli and other oil fields. However, heavy oil contains more colloids and asphaltenes, has a high viscosity and a high freezing point, making it difficult to extract and transport. Therefore, it is very important to reduce the viscosity of heavy oil. [0003] Heavy oil usually refers to crude oil with high viscosity and high relative density, among...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/58C10L1/10C10L1/19C10L1/188C10L1/185C10L1/12C10L1/222C10L1/28C10L1/232C10L1/182
Inventor 不公告发明人
Owner 长沙而道新能源科技有限公司
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