A kind of preparation method of crude oil viscosity reducing material and crude oil viscosity reducing material

A crude oil and graphene technology, applied in chemical instruments and methods, drilling compositions, physical/chemical process catalysts, etc., can solve the problems of poor viscosity reduction effect, high dosage, low temperature deactivation, etc., and achieve viscosity reduction efficiency High, low temperature, easy to operate effect

Active Publication Date: 2021-03-26
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among the above methods, adding crude oil viscosity-reducing material is one of the methods with less energy consumption, low cost, no pollution and no need for post-treatment, but it has the disadvantages of poor viscosity-reducing effect, high dosage, and low-temperature deactivation

Method used

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  • A kind of preparation method of crude oil viscosity reducing material and crude oil viscosity reducing material
  • A kind of preparation method of crude oil viscosity reducing material and crude oil viscosity reducing material
  • A kind of preparation method of crude oil viscosity reducing material and crude oil viscosity reducing material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The preparation and use process of crude oil viscosity reducing material are as follows:

[0035] (1) Taking by weighing a solid content of 2.51% graphene oxide jelly is uniformly dispersed in water, and in the graphene oxide jelly, the graphene oxide content is 0.0075g;

[0036] (2) Under normal temperature stirring, 0.17g Co(NO 3 ) 2 6H2O, 0.17g Ni(NO 3 ) 2 ·6H 2 O and 0.09g NaOH are slowly added in the above solution;

[0037] (3) Add 50 μL N 2 h 4 , keep stirring for 3h;

[0038] (4) Transfer to a high-pressure reactor and react at 180° C. for 12 hours to obtain the crude oil viscosity-reducing material;

[0039] (5) Add the crude oil viscosity-reducing material and 188 μL of toluene to 15 g of crude oil, the crude oil viscosity-reducing material accounts for 0.5 wt % of the crude oil, and react at 180° C. for 12 hours to carry out the viscosity-reducing reaction.

[0040] The crude oil viscosity-reducing material in this example is composed of 45% elementa...

Embodiment 2

[0042] The preparation and use process of crude oil viscosity reducing material are as follows:

[0043] (1) Taking by weighing a solid content of 2.51% graphene oxide jelly is uniformly dispersed in water, and in the graphene oxide jelly, the graphene oxide content is 0.0075g;

[0044] (2) Under normal temperature stirring, 0.33g CoCl 2 ·6H 2 O and 0.09g NaOH are slowly added in the above solution;

[0045] (3) Add 50 μL N 2 h 4 , keep stirring for 3h;

[0046] (4) Transfer to a high-pressure reactor and react at 180° C. for 12 hours to obtain the crude oil viscosity-reducing material;

[0047] (5) Add 0.5% crude oil viscosity-reducing material and 188 μL toluene to 15 g crude oil, and react at 180° C. for 12 hours to carry out the viscosity-reducing reaction.

[0048] The crude oil viscosity-reducing material in this example is composed of 90% simple Co and 10% carrier RGO, and its viscosity-reducing effect is shown in Table 1.

Embodiment 3

[0050]The crude oil viscosity reducing catalyst is composed of 50% elemental Co and 50% elemental Ni. The preparation and use process are as follows:

[0051] (1) Under normal temperature stirring, 0.17g Co(NO 3 ) 2 ·6H 2 O, 0.17g Ni(NO 3 ) 2 ·6H 2 O and 0.09g NaOH are slowly added in the above solution;

[0052] (2) Add 50 μL N to the above system 2 h 4 , keep stirring for 3h;

[0053] (3) Transfer to an autoclave and react at 180°C for 12 hours to obtain a viscosity-reducing catalyst;

[0054] (4) Add 0.5% viscosity-reducing catalyst and 171 μL of toluene to 13.7 g of crude oil, and react at 180° C. for 12 hours to carry out the viscosity-reducing reaction.

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Abstract

The invention discloses a preparation method of a crude oil viscosity-reducing material and the crude oil viscosity-reducing material. The method comprises the steps that a graphene carrier carbon material is dispersed in water; cobalt salt, nickel salt and alkali are added; a reducing agent is added, and a heating reaction is performed to obtain the crude oil viscosity-reducing material. The preparation method of the crude oil viscosity-reducing material has the advantages that metallic nickel and metallic cobalt have a synergistic effect, the viscosity reducing efficiency is high, and the viscosity reduction rate can also reach 94.8% when the addition amount is only 0.5% of the total amount of crude oil by weight and is superior to other crude oil viscosity-reducing materials; the temperature of the viscosity reducing process is low, the process is simple, and the operation is easy.

Description

technical field [0001] The invention belongs to the technical field of viscous crude oil viscosity reduction, and in particular relates to a method for preparing a crude oil viscosity reduction material and the crude oil viscosity reduction material. Background technique [0002] Heavy oil is crude oil with relatively high viscosity and density. It is generally called heavy crude oil in the world, and it occupies a large proportion of the world's oil and gas resources. Nowadays, with the rapid development of the national economy, my country's demand and consumption of oil and gas resources are also continuously increasing. As an important part of oil and gas resources, oil is constantly being exploited, so that the reserves of light crude oil are rapidly increasing. reduce. Because crude oil with poor quality such as heavy oil and heavy oil plays an important role in petroleum resources. Therefore, people's eyes and more and more attention are attracted by the unconventiona...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/03C09K8/58B01J27/24
CPCB01J27/24C09K8/03C09K8/58
Inventor 陈海群何光裕袁菁菁蒋玲王小兵陈群李栋何岩峰赵会军
Owner CHANGZHOU UNIV
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