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Pour point depressant for crude oil, preparation method for pour point depressant and application of pour point depressant

A crude oil pour point depressant and crude oil technology, applied in chemical instruments and methods, mechanical equipment, drilling compositions, etc., can solve the problems of small toxic and side effects, lowering the freezing point of high-wax crude oil, etc., and achieve stable chemical properties and suitable for use. The effect of wide-ranging, high-efficiency pour point-reducing effect

Inactive Publication Date: 2016-03-02
XUZHOU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved: In order to overcome the defects of the existing technology, obtain a kind of viscosity that can stabilize the high-wax crude oil so that it will not rise due to the temperature drop; the rheological property is stable, does not change with the temperature, and is easy to use; reduce the viscosity of the high-wax crude oil The pour point depressant is suitable for various stages of crude oil mining, transportation, storage and transportation; and has small toxic and side effects, high safety, simple production process, and is easy to popularize and use. The invention provides a crude oil pour point depressant and Its preparation method and application

Method used

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  • Pour point depressant for crude oil, preparation method for pour point depressant and application of pour point depressant
  • Pour point depressant for crude oil, preparation method for pour point depressant and application of pour point depressant
  • Pour point depressant for crude oil, preparation method for pour point depressant and application of pour point depressant

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Experimental program
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Effect test

Embodiment 1

[0024] Adopt the following method to prepare crude oil pour point depressant:

[0025] Step 1. Add 300 parts of ultra-pure water with a conductivity of 0.01μS / cm into the reactor, start the stirrer in the reactor at a speed of 120rpm, start the heating pump to raise the temperature in the reactor to 30°C; add in sequence 2 parts of bis(1,3-dimethylbutanol) sulfosuccinate sodium salt, 4 parts of polyvinylpyrrolidone, 4 parts of hexadecyldimethyl tertiary amine, stir until completely dissolved, adjust the pH value to 4.0, Adjust the rotation speed of the agitator to 20rpm, the temperature is 50°C, and the esterification reaction is performed for 1 hour;

[0026] Step 2: Take 5 parts of sodium valproate and 5 parts of ammonium oxalate and pulverize, the particle size of the powder is 400 mesh; add 1 part of nano-level palladium borate and mix evenly, spread it on the tray with a thickness of 2 cm. 1kGy, energy 1MeV α-ray irradiation for 5 minutes;

[0027] Step 3: Dissolve the ...

Embodiment 2

[0030] Adopt the following method to prepare crude oil pour point depressant:

[0031] Step 1. Add 900 parts of ultrapure water with a conductivity of 0.0005μS / cm into the reactor, start the stirrer in the reactor at a speed of 150rpm, and start the heating pump to raise the temperature in the reactor to 60°C; 15 parts of bis(1,3-dimethylbutanol) sodium sulfosuccinate, 16 parts of polyvinylpyrrolidone, and 13 parts of hexadecyldimethyl tertiary amine, stirred until completely dissolved, and adjusted to a pH value of 8.5, Adjust the rotation speed of the agitator to 50rpm, the temperature is 60°C, and the esterification reaction is carried out for 3 hours;

[0032] Step 2, take 19 parts of sodium valproate and 18 parts of ammonium oxalate and pulverize, the particle size of the powder is 500 mesh; add 11 parts of nano-level palladium borate and mix evenly, and spread it on the tray with a thickness of 5 cm. 4kGy, energy 10MeV α-ray irradiation for 30 minutes;

[0033] Step 3: D...

Embodiment 3

[0036] Adopt the following method to prepare crude oil pour point depressant:

[0037] Step 1. Add 500 parts of ultrapure water with a conductivity of 0.005μS / cm into the reactor, start the stirrer in the reactor at a speed of 130rpm, and start the heating pump to raise the temperature in the reactor to 50°C; add in sequence 8 parts of bis(1,3-dimethylbutanol) sodium sulfosuccinate, 10 parts of polyvinylpyrrolidone, and 10 parts of hexadecyldimethyl tertiary amine were stirred until completely dissolved, and the pH value was adjusted to 7.0. Adjust the rotation speed of the agitator to 40rpm, the temperature is 55°C, and the esterification reaction is performed for 2 hours;

[0038] Step 2: Take 8 parts of sodium valproate and 10 parts of ammonium oxalate and pulverize them. The particle size of the powder is 450 mesh; add 8 parts of nano-level palladium borate and mix evenly, and spread them on the tray with a thickness of 3 cm. 20 minutes of α-ray irradiation with 2kGy and ...

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Abstract

The invention discloses a pour point depressant for crude oil, a preparation method for the pour point depressant and application of the pour point depressant. The pour point depressant is prepared from the following ingredients in parts by weight: 2-15 parts of sodium 1,4-bis(1,3-dimethylbutyl) sulphonatosuccinate, 4-16 parts of polyvinyl pyrrolidone, 4-13 parts of hexadecyl dimethyl tertiary amine, 5-19 parts of sodium valproate, 5-18 parts of ammonium oxalate, 1-11 parts of nano-scale palladium borate, 400-600 parts of 10ppm-250ppm polyvinyl acid, 3-15 parts of 4-(1-methylethyl)cyclohexadiene-1-ethanol formate, 2-15 parts of polyacrylamide, 7-21 parts of cross-linker, 2-18 parts of vinylethylene carbonate, 2-12 parts of 4,4'-dimethoxytrityl chloride, 1-4 parts of 3,5-dibromomethyl toluene and 5-7 parts of sodium ethylenediamine tetramethylene phosphate. The pour point depressant for the crude oil, disclosed by the invention, is efficient and is stable in chemical property, and under the condition of low temperature, wax crystals cannot be precipitated when high-wax crude oil is transported by a pipeline; and the viscosity of the high-wax crude oil cannot be improved along with the drop of temperature, and the rheological property of the high-wax crude oil is not changed along with temperature drop.

Description

technical field [0001] The invention belongs to the field of petrochemical industry, in particular to a crude oil pour point depressant and its preparation method and application. Background technique [0002] The crude oil produced in most oilfields in my country is mainly high-wax crude oil. When the temperature drops, the crude oil will precipitate wax crystals. As the temperature continues to drop, the wax crystals gradually increase, and finally form a three-dimensional network structure, which greatly reduces the fluidity of crude oil. . The defect that the fluidity of waxy crude oil is particularly sensitive to temperature seriously affects crude oil extraction, storage and transportation, and safe production. Therefore, the research on the viscosity and rheological improvement technology of waxy crude oil has become a hot topic in my country to alleviate the technical problems of oil exploitation and transportation. [0003] The pour point depressant is an oil addit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/588C09K8/524F17D1/17
CPCC09K8/588C09K8/524F17D1/17
Inventor 梁峙梁骁
Owner XUZHOU UNIV OF TECH
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