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A low-cost oil-soluble viscosity reducer for heavy oil viscosity reduction and its preparation method

An oil-soluble viscosity reducer and technology for viscosity reduction, applied in chemical instruments and methods, mechanical equipment, drilling compositions, etc., can solve the problems of high-efficiency viscosity-reducing agent, difficulty in large-scale application, and no heavy oil. , to achieve the effect of loose mining, large economic benefits, and viscosity reduction

Inactive Publication Date: 2018-06-15
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen from the above patents that there are many kinds of monomers for viscosity reducers, and various polymers can be obtained by polymerization, but there is no high-efficiency viscosity reducer specifically for heavy oil viscosity reduction, and most products are based on Chemical products are used as raw materials, the cost is high, and it is difficult to apply on a large scale

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0015] Example 1 Oil-soluble viscosity reducer

[0016] Raw material composition:

[0017] Main agent: 25%; azobisisobutyronitrile (initiator): 0.5%; toluene (solvent): 74.5%.

[0018] Among them, the above-mentioned main agent is biodiesel, styrene and stearyl acrylate with a mass ratio of 6:1:1.

[0019] Preparation:

[0020] First dissolve the octadecyl acrylate in the main agent with the solvent, then add the biodiesel and aromatic hydrocarbons in the main agent in sequence, and then add the initiator azobisisobutyronitrile, at a temperature of 80°C and under the protection of nitrogen And react for 8 hours to obtain the oil-soluble viscosity reducer.

example 2

[0021] Example 2 Oil-soluble viscosity reducer

[0022] composition:

[0023] Main agent: 35%; Azobisisobutyronitrile: 0.3%;

[0024] Diesel (solvent): 64.7%.

[0025] Among them, the above-mentioned main agent is biodiesel, styrene and stearyl acrylate with a mass ratio of 4:1:1.

[0026] Preparation:

[0027] First dissolve the octadecyl acrylate in the main agent with the solvent, then add the biodiesel and aromatic hydrocarbons in the main agent in sequence, and then add the initiator azobisisobutyronitrile, at a temperature of 80°C and under the protection of nitrogen , React for 6 hours to obtain the oil-soluble viscosity reducer.

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PUM

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Abstract

The invention provides a low-cost oil-soluble viscosity reducer for viscosity reduction of thick oil. The low-cost oil-soluble viscosity reducer is prepared from the following raw materials by mass percent: 20-50 percent of a main agent, 50-80 percent of a solvent and 0.05-1 percent of an initiator, wherein the total percent is 100; the main agent is prepared from biodiesel, aromatic hydrocarbon and octadecyl acrylate, of which the mass ratio is (2 to 6):1:1. According to the low-cost oil-soluble viscosity reducer, as low-cost biodiesel is used as the main raw material, and oleic acid in biodiesel and low-level ester are co-polymerized with aromatic hydrocarbon and octadecyl acrylate to obtain the low-cost viscosity reducer containing a long alkyl chain, the production cost is lowered. Tests show that the low-cost oil-soluble viscosity reducer can greatly reduce the viscosity of super thick oil, the consumption of thin oil is reduced, and the thin oil recovery requirement is met.

Description

Technical field [0001] The invention relates to an oil-soluble viscosity reducer, which is used for oil field crude oil pipeline transportation and viscosity reduction of heavy oil production, and is especially suitable for mixing and thinning and viscosity reduction process of heavy oil pipeline transportation and production. Background technique [0002] With the increasing demand for oil, high-quality crude oil is no longer sufficient to meet human needs, and with the gradual increase in oil extraction, more and more heavy oil is produced, and the application of heavy oil is also problematic. Just before my eyes. Because heavy oil is rich in a large amount of colloids, asphaltenes and solid hydrocarbons, and the molecular weights of colloids and asphaltenes are large and polarities, hydrogen bonds are easily formed between molecules, which makes the molecules have strong cohesion, resulting in thick When the oil is flowing, due to the greater internal friction, it cannot flow...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/58C09K8/584F17D1/17
CPCC09K8/58C09K8/584F17D1/17
Inventor 朱丽君夏道宏井晓慧李爱芬周玉路项玉芝
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)