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High wax thickened oil nanocomposite pour-point depressant and preparation method thereof

A technology of nanocomposite material and pour point depressant, which is applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problem of poor product dispersion and thermal stability of pour point depressant, unsatisfactory effect of high waxy and thick crude oil, Unable to guarantee the validity of the reaction time and other issues, to achieve the effect of easy mass production, good pour point depressing effect, and long action time

Inactive Publication Date: 2015-02-04
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For low-waxy crude oil, there are good industrial solutions such as polyethylene-vinyl acetate copolymer for point depressing, but the effect is not ideal for high-waxy and high-viscosity crude oil; Both use solution polymerization or precipitation polymerization. Solution polymerization often uses toxic substances as the polymerization medium, which is easy to cause environmental pollution, while precipitation polymerization tends to produce viscous polymers during the synthesis process. As viscous polymers continue to be produced, the reaction is interrupted, and there is no guarantee. The effectiveness of the reaction time and the molecular weight is limited, the dispersibility and thermal stability of the pour point depressant product are poor

Method used

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  • High wax thickened oil nanocomposite pour-point depressant and preparation method thereof
  • High wax thickened oil nanocomposite pour-point depressant and preparation method thereof
  • High wax thickened oil nanocomposite pour-point depressant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1: Poly(vinylimidazole-2-acrylamide-2-methylpropanesulfonic acid-octadecyl methacrylate)

[0029] (1) Weigh 10g of octadecyl methacrylate, according to the molar ratio of vinylimidazole, 2-acrylamido-2-methylpropanesulfonic acid, and octadecyl methacrylate as 1:1:1, add disperse The dosage is 2% of the total mass of the monomer, added to 50 ml of ethanol, protected by nitrogen, added 0.1 g of azobisisobutyronitrile, condensed and refluxed, and reacted at 60° C. for 4 hours.

[0030] (2) The obtained reaction solution was suction-filtered with a Buchner funnel, washed 3-4 times with alcohol and acetone, and then vacuum-dried at 25-35°C to obtain poly(vinylimidazole-2-acrylamide-2-methylpropane) Sulfonic acid-stearyl methacrylate) pour point depressant powder.

[0031] The infrared spectrum of synthetic poly(vinylimidazole-2-acrylamide-2-methylpropanesulfonic acid-octadecyl methacrylate) is as follows figure 1 As shown, the top is the infrared spectrum of polyoc...

Embodiment 2

[0041] Embodiment 2: the preparation method of poly(vinylimidazole-2-acrylamide-2-methylpropanesulfonic acid-dodecyl methacrylate), the steps are the same as example 1, and the difference is replaced with dodecyl methacrylate Octadecyl Methacrylate.

Embodiment 3

[0042] Embodiment 3: the preparation method of poly(vinylimidazole-2-acrylamide-2-methylpropanesulfonic acid-tetradecyl methacrylate), the steps are the same as example 1, and the difference is replaced by tetradecyl methacrylate Octadecyl Methacrylate.

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Abstract

The invention discloses a high wax thickened oil nanocomposite pour-point depressant, which belongs to the high-molecular nano-material preparation field. The material comprises poly(vinyl imidazole-2-acrylamide-2-methyl propane sulfonic acid-higher alkyl methacrylate). The preparation method comprises the following steps: 1)preparing poly(vinyl imidazole-2-acrylamide-2-methyl propane sulfonic acid-higher alkyl methacrylate), and 2)processing a reaction solution of poly(vinyl imidazole-2-acrylamide-2-methyl propane sulfonic acid-higher alkyl methacrylate) to obtain the poly(vinyl imidazole-2-acrylamide-2-methyl propane sulfonic acid-higher alkyl methacrylate) powder. The nano pour-point depressant has the advantages of good depression effect, low cost, simple production, clean process, no pollution, easy acquisition of the products, easy transportation and preservation. Through the experiment, the net pour point depression amplitude of the nano pour-point depressant to high wax thickened oil at Daqing dandong station is 8 DEG C which is better than the pour point depression effect (net pour point depression amplitude is 5 DEG C) of EVA on the market.

Description

technical field [0001] The invention belongs to the technical field of polymer nanomaterial preparation, and in particular relates to a high-wax heavy oil nanocomposite pour point depressant and a preparation method thereof. Background technique [0002] The crude oil produced in my country is mainly waxy high pour point oil and heavy oil rich in colloids and asphaltenes. As major domestic oil fields enter the middle and late stages of development, the output and quality of crude oil are declining, and the proportion of high-condensation and high-viscosity crude oil is gradually increasing. [0003] With the increasing scarcity of oil resources, the abundant reserves of heavy oil have aroused widespread concern. my country is rich in heavy oil resources, about 2.5×10 10 tons, accounting for 28% of the total oil resources. However, due to the large amount of paraffin, colloid and asphaltenes contained in heavy oil, it has significant characteristics such as high viscosity ...

Claims

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Application Information

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IPC IPC(8): C08F226/06C08F220/58C08F220/18C08F2/20C09K8/588C09K8/524
Inventor 张长桥于帅张宏民于萍魏云鹤
Owner SHANDONG UNIV
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