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Comb polymer for crude oil pour point depressant, preparation method and application thereof

A comb-shaped polymer and crude oil pour point depressant technology, applied in drilling compositions, chemical instruments and methods, etc., can solve the problems of narrow application range, complex preparation process, lack of universality, etc., and achieve high efficiency and high efficiency. The effect of safe delivery

Active Publication Date: 2019-10-11
BC P INC CHINA NAT PETROLEUM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the process of realizing the present invention, the inventor found that there are at least the following problems in the prior art: the existing crude oil pour point depressant has a narrow scope of application and does not have universal applicability
Moreover, the preparation process of the existing crude oil pour point depressant is relatively complicated, and the structure controllability is poor

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0028] In a first aspect, an embodiment of the present invention provides a method for preparing a comb polymer for a crude oil pour point depressant, which specifically includes the following steps:

[0029] Step 1: Add higher alcohol acrylate, perfluoroalcohol acrylate, dicyclopentadiene, the first initiator and the first solvent into the reaction vessel, and react at 60°C to 80°C for more than 10h under the protection of an inert gas to obtain acrylic acid High carbon alcohol ester-perfluoroalcohol acrylate-dicyclopentadiene terpolymer.

[0030] Among them, the molar ratio of higher alcohol acrylate, perfluoroalcohol acrylate and dicyclopentadiene is 1: (0.8-1.2): (0.8-1.2); The total mass of pentadiene, the first initiator and the first solvent is 100%, the addition amount of the first initiator is 0.4wt%-0.6wt%, and the addition amount of the first solvent is 8wt%-15wt%.

[0031] The number of carbon atoms of the higher alcohol used for synthesizing the higher alcohol ac...

Embodiment 1

[0061] This embodiment provides a method for preparing a comb-shaped polymer used for crude oil pour point depressant. The comb-shaped polymer is mainly composed of higher alcohol acrylate-perfluoroalcohol acrylate-dicyclopentadiene terpolymer chain, a comb-shaped polymer with polyvinyl acetate as the side chain, wherein the high-carbon alcohol acrylate is seventy-carbon alcohol ester (that is, the high-carbon alcohol used for the synthesis of high-carbon alcohol acrylate has 70 carbon atoms ), perfluoroalcohol acrylate is 1H, 1H, 2H, 2H-perfluorodecyl acrylate (that is, the number of carbon atoms of the fluorinated alcohol used to synthesize perfluoroalcohol acrylate is 10).

[0062] Concrete preparation method comprises the following steps:

[0063] Step 101, add 5g of heptadecyl acrylate, 2.63g of 1H,1H,2H,2H-perfluorodecyl acrylate, 0.63g of dicyclopentadiene, and 0.0413g of azobisisobutyronitrile into a 250ml pressure-resistant bottle (AIBN) and 82.6ml of toluene, and th...

Embodiment 2

[0068] This embodiment provides a method for preparing a comb-shaped polymer used for crude oil pour point depressant. The comb-shaped polymer is mainly composed of higher alcohol acrylate-perfluoroalcohol acrylate-dicyclopentadiene terpolymer chain, a comb-shaped polymer with polyvinyl acetate as the side chain, wherein the high-carbon alcohol acrylate is forty-carbon alcohol ester (that is, the high-carbon alcohol used for the synthesis of high-carbon alcohol acrylate has 40 carbon atoms ), perfluoroalcohol acrylate is 1H, 1H, 2H, 2H-perfluorodecyl acrylate (that is, the number of carbon atoms of the fluorinated alcohol used to synthesize perfluoroalcohol acrylate is 10).

[0069] Concrete preparation method comprises the following steps:

[0070] Step 201, add tetradecyl acrylate, 1H, 1H, 2H, 2H-perfluorodecyl acrylate, dicyclopentadiene, azobisisobutyronitrile (AIBN) and toluene into a 250ml pressure-resistant bottle, Then a magnet was put into the pressure bottle, and un...

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PUM

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Abstract

The invention discloses a comb-shaped polymer for crude oil pour point depressants, a preparation method of the polymer and an application of the polymer, and belongs to the technical field of preparation of polymers and crude oil pipeline transportation. The preparation method includes the steps: a, adding acrylic high-carbon alcohol ester, acrylic perfluor alcohol ester, dicyclopentadiene, firstinitiating agents and first solvents into a reaction vessel, and performing reaction to obtain an acrylic high-carbon alcohol ester-acrylic perfluor alcohol ester-dicyclopentadiene terpolymer; b, adding second solvents, the acrylic high-carbon alcohol ester-acrylic perfluor alcohol ester-dicyclopentadiene terpolymer acquired in the step a, second initiating agents, free radical concentration conditioning agents and vinyl acetate into the reaction vessel, and performing reaction to obtain the comb-shaped polymer which takes the acrylic high-carbon alcohol ester-acrylic perfluor alcohol ester-dicyclopentadiene terpolymer as a main chain and takes polyvinyl acetate as a side chain. The comb-shaped polymer acquired by the preparation method can effectively reduce a freezing point of crude oil, and exploitation and transportation of the crude oil are facilitated.

Description

technical field [0001] The invention relates to the technical field of polymer preparation and crude oil pipeline transportation, in particular to a high-carbon alcohol acrylate-perfluoroalcohol acrylate-dicyclopentadiene terpolymer as the main chain, which is used as a pour point depressant for crude oil. Comb-shaped polymer with polyvinyl acetate as side chain and its preparation method and application. Background technique [0002] Waxy crude oil usually has a high freezing point. During the temperature drop of crude oil, macromolecular wax gradually precipitates from the crude oil and forms a three-dimensional network structure, which makes the crude oil solidify, thereby affecting its fluidity, which seriously restricts the extraction and production of crude oil. delivery. Therefore, it is necessary to add a pour point depressant to crude oil to lower the freezing point of crude oil, which is beneficial to the extraction and transportation of crude oil. [0003] At pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F265/04C08F218/08C08F220/18C08F220/24C08F232/08C09K8/588C09K8/524
Inventor 李锦昕席作家赵凤英党亚红肖彭丁志杰王丽娟
Owner BC P INC CHINA NAT PETROLEUM CORP
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