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A kind of high-efficiency crude oil pour point depressant and its preparation method and application

A crude oil pour point depressant and high-efficiency technology, applied in chemical instruments and methods, mechanical equipment, pipeline systems, etc., can solve problems such as reducing the freezing point of crude oil, difficulty in crude oil extraction and transportation, and improve low-temperature fluidity, which is conducive to popularization. Use, distribute the effect evenly

Active Publication Date: 2021-11-23
DESHI ENERGY TECH GRP CO LTD +1
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  • Claims
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Problems solved by technology

[0003] The purpose of the present invention is to provide a high-efficiency crude oil pour point depressant and its preparation method and application. The high-efficiency crude oil pour point depressant can significantly reduce the freezing point of crude oil, effectively improve the fluidity of crude oil, and solve the problem of difficult crude oil exploitation and transportation

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  • A kind of high-efficiency crude oil pour point depressant and its preparation method and application
  • A kind of high-efficiency crude oil pour point depressant and its preparation method and application

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preparation example Construction

[0037] 1.2, the preparation method of above-mentioned efficient crude oil pour point depressant comprises the following steps:

[0038] (1) Dissolve the modified ethylene-vinyl acetate copolymer, dimethylaminoethyl acrylate and p-divinylbenzene in the heavy aromatic hydrocarbon according to the mass ratio of (7~8):(1~2):(2~3) In the solvent, adding an initiator to react to obtain the first component;

[0039] (2) Add the Lewis acid catalyst and n-butanol into the reaction flask, stir and heat up to 100-110°C, add epichlorohydrin to react to obtain the second component, the mass ratio of n-butanol to epichlorohydrin is 1: (12~13);

[0040] (3) Dissolving the first component, the second component and the third component in a heavy aromatic solvent according to the mass ratio of (9-9.5): (1-1.5): (2-2.5) to obtain the Efficient crude oil pour point depressant.

[0041] Wherein, the initiator in step (1) is selected from at least one of benzoyl peroxide, lauroyl peroxide, benzo...

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Abstract

The application discloses a high-efficiency crude oil pour point depressant and its preparation method and application, belonging to the technical field of oilfield chemicals. The high-efficiency crude oil point depressant includes a first component, a second component and a third component; the first component is modified ethylene-vinyl acetate copolymer, dimethylaminoethyl acrylate and p-divinylbenzene Terpolymer, the molecular weight of the first component is 3000-4000; the second component is a polyether compound of n-butanol and epichlorohydrin, the molecular weight of the second component is 1000-1500; The third component is naphthalene or naphthalene derivatives. The first component, the second component and the third component in the high-efficiency crude oil point depressant act synergistically to significantly reduce the freezing point of crude oil and effectively improve the fluidity of crude oil.

Description

technical field [0001] The application relates to a high-efficiency crude oil pour point depressant and its preparation method and application, belonging to the technical field of oilfield chemicals. Background technique [0002] Crude oil is an important petroleum resource, and its composition contains a large amount of easily crystallized substances such as colloids, asphaltenes, and paraffins. At present, most oil fields have entered the stage of three-stage oil recovery, and parameters such as freezing point, wax content, and viscosity of newly mined crude oil are getting higher and higher. During the transportation of crude oil, when the transportation temperature drops to the waxing point of crude oil, the crude oil begins to crystallize. If the temperature is further lowered, the amount of crystallized crude oil will increase, which will eventually cause the crude oil to lose fluidity and solidify on the pipe wall. It brings great difficulties to the extraction and t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F255/02C08F220/34C08F212/36C09K8/588C09K8/58F17D1/17
CPCC08F255/023C09K8/58C09K8/588F17D1/17C08F220/34C08F212/36
Inventor 崔仕章修宗明王黎明高瑞美吕志凤牟国毅徐佳慧
Owner DESHI ENERGY TECH GRP CO LTD
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