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A kind of preparation method of ionic liquid type heavy oil catalytic viscosity reducer

A catalytic viscosity reduction and ionic liquid technology, applied in chemical instruments and methods, drilling compositions, etc., can solve the problems of complex molecular structure of heavy oil, high content of heavy components, and effective mining problems, and achieve excellent reduction Viscous effect, less by-products, and the effect of improving the quality of heavy oil

Inactive Publication Date: 2019-03-22
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the complex molecular structure, high content of heavy components and poor fluidity of heavy oil, its effective exploitation is still a difficult problem in the world

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] With 10mol N,N-dimethylformamide as the reaction solvent, slowly add 1mol 1,4-dibromobutane into 2.0mol 4-picoline, dropwise within 0.5h, and stir at 80°C React for 24h, separate the liquid, take the lower layer; add 0.9mol SbBr to the lower layer 3 , reacted at 70°C for 30min, dried the product in vacuum (dried at 130-145°C for 40-60min, and the degree of vacuum was -0.04--0.06Mpa; the following examples were the same), and obtained ionic liquid-type heavy oil catalytic viscosity reduction agent.

[0017] Application: The product of this embodiment is applied to heavy oil in Shengli Oilfield (the viscosity is 181000mPa·s at 70°C), and the product of this embodiment, water and heavy oil are placed in a high-pressure reactor (the consumption of water and heavy oil is respectively 29.6 ~ 29.7wt%, 70wt%), a hydrothermal cracking catalytic viscosity reduction reaction occurs at 200°C, wherein based on the mass of the entire system, the amount of the viscosity reducer in th...

Embodiment 2

[0020] With 11mol of N,N-dimethylformamide as the reaction solvent, slowly add 1mol of 1,4-dibromobutane into 2.1mol of 4-picoline, dropwise within 0.5h, and stir at 85°C React for 24h, separate the liquid, take the lower layer; add 1.0mol SbBr to the lower layer 3 , reacted at 75° C. for 30 minutes, and vacuum-dried the product to obtain an ionic liquid-type heavy oil catalytic viscosity reducer.

[0021] The product of this example is applied to viscous oil of Shengli Oilfield (viscosity is 24150mPa·s at 50°C), and the product of this example, water and viscous oil are placed in a high-pressure reactor (the consumption of water and viscous oil respectively account for 29.6~29.7 wt%, 70wt%), a hydrothermal cracking catalytic viscosity reduction reaction occurs at 200°C, wherein based on the mass of the entire system, the amount of catalytic viscosity reduction agent accounts for 0.3-0.4wt%.

[0022] After testing, the heavy oil viscosity reduction rate of the product of this...

Embodiment 3

[0024] With 11mol of N,N-dimethylformamide as the reaction solvent, slowly add 1mol of 1,4-dibromobutane into 2.2mol of 4-picoline, dropwise within 0.5h, and stir at 90°C React for 28h, separate the liquid, take the lower layer; add 1.1mol SbBr to the lower layer 3 , react at 80° C. for 10 minutes, and dry the product in vacuum to obtain an ionic liquid-type heavy oil catalytic viscosity reducer.

[0025] The product of this embodiment is applied to Liaohe Oilfield heavy oil (viscosity is 35000mPa·s at 50°C), and the product of this embodiment, water and heavy oil are placed in a high-pressure reactor (the consumption of water and heavy oil is respectively 29.6-29.7 wt%, 70wt%), a hydrothermal cracking catalytic viscosity reduction reaction occurs at 200°C, wherein based on the mass of the entire system, the amount of catalytic viscosity reduction agent accounts for 0.3-0.4wt%.

[0026] After testing, the thick oil viscosity reduction rate of the product of this example reach...

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Abstract

The invention relates to a preparation method of a thickened oil catalyzing viscosity reducer, in particular to a preparation method of an ionic liquid type thickened oil catalyzing viscosity reducer with a hydrogen supply and aromatic ring binuclear catalyzing center. The preparation method is characterized by comprising the following steps: (1) taking N, N-dimethylformamide as a reaction solvent, adding 1,4-dibromo butane in 4-picoline, reacting for 24-30 hours while stirring at the temperature of 80-90 DEG C, separating liquid, and taking lower-layer liquid; and (2) adding SbBr3 into the lower-layer liquid, reacting for 10-30 minutes at the temperature of 70-90 DEG C, and drying the product under vacuum to obtain the ionic liquid type thickened oil catalyzing viscosity reducer with the hydrogen supply and aromatic ring binuclear catalyzing center, wherein the molar ratio of the 1,4-dibromo butane, the 4-picoline, SbBr3 and the N, N-dimethylformamide is 1:2.0-2.2:0.9-1.1:10-12. The viscosity reducer prepared by the method has good viscosity reducing effect on thickened oil.

Description

technical field [0001] The invention relates to a preparation method of a heavy oil catalytic viscosity reducer, in particular to a preparation method of an ionic liquid type heavy oil catalytic viscosity reducer. Background technique [0002] With the decrease of conventional oil resources, heavy oil, as a potential unconventional energy source, is attracting more and more attention. However, due to the complex molecular structure, high content of heavy components and poor fluidity of heavy oil, its effective exploitation is still a difficult problem in the world. Hydrothermal cracking catalytic viscosity reduction technology is a cutting-edge heavy oil recovery technology. By injecting high-temperature steam and catalytic viscosity reduction agent into the oil layer, the oil layer is regarded as a natural reactor, and the heat of steam is used to make the heavy oil flow under hydrothermal conditions. Catalytic cracking can be realized under the condition of catalytic crac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/592
CPCC09K8/592
Inventor 陈艳玲陈宇石植真
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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