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Nano self-emulsification system and preparation method thereof

A self-emulsification and system technology, applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems of poor control and displacement effects, increased demand for profile control, and impact on displacement effects, etc., achieving low cost and high stability Good results

Inactive Publication Date: 2015-04-22
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when most reservoirs enter the middle and late stages of development, the heterogeneity of the reservoirs will have an increasingly serious impact on the displacement effects of water flooding and chemical flooding. The demand for profile control in high-temperature and high-salt reservoirs increases, and the effect of conventional control and flooding becomes worse. Reservoirs put forward higher requirements for profile control and flooding technology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Preparation of nano self-emulsifying system:

[0052] (A) Preparation of nanoparticle hydrosol: add 20kg of laponite nanoparticles with a particle diameter of 25nm, 10kg of sodium dodecylsulfonate, 10kg of sodium carbonate, 60kg of deionized water, and stir at 200rpm until uniform;

[0053] (B) Preparation of the oil phase: add 65Kg of white oil to the reaction kettle, and at a stirring speed of 200rpm, add 20Kg of Span S-80 and 15Kg of polyethylene glycol 400, and stir until uniform;

[0054] (C) Preparation of nano self-emulsifying system: at a stirring speed of 1000rpm, add 45Kg of the oil phase prepared in step (B) to the 100Kg nanoparticle hydrosol in step (A), and continue stirring for 100min after completion to obtain nano self-emulsifying system.

Embodiment 2

[0056] Preparation of nano self-emulsifying system:

[0057] (A) Preparation of nanoparticle hydrosol: add 30kg of hectorite nanoparticles with a particle diameter of 25nm, 16kg of sodium dodecylsulfonate, 14kg of sodium carbonate, 40kg of deionized water, and stir at 300rpm until uniform;

[0058] (B) Prepare the oil phase: add 55Kg of white oil to the reaction kettle, and add 25Kg of Span S-85 and 20Kg of polyethylene glycol 400 at a stirring speed of 450rpm, and stir until uniform;

[0059] (C) Preparation of nano self-emulsifying system: at a stirring speed of 1000rpm, add the 35Kg oil phase prepared in step (B) to the 100Kg nanoparticle hydrosol in step (A), and continue stirring for 100min after completion to obtain nano self-emulsifying system.

Embodiment 3

[0061] Preparation of nano self-emulsifying system:

[0062] (A) Preparation of nanoparticle hydrosol: add 10kg of hectorite nanoparticles with a particle diameter of 25nm, 15kg of sodium dodecylsulfonate, 10kg of sodium carbonate, 65kg of deionized water, and stir at 200rpm until uniform;

[0063] (B) Prepare the oil phase: add 65Kg of white oil to the reaction kettle, add 10Kg of Span S-80 and 25Kg of polyethylene glycol 400 at a stirring speed of 200rpm, and stir until uniform;

[0064] (C) Preparation of nano self-emulsifying system: at a stirring speed of 1000rpm, add the 50Kg oil phase prepared in step (B) to the 100Kg nanoparticle hydrosol in step (A), and continue stirring for 90min after completion to obtain nano self-emulsifying system.

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Abstract

The invention discloses a nano self-emulsification system. The nano self-emulsification system is characterized by being prepared from a component (a) and a component (b): wherein the component (a) is a surfactant containing nanoparticles, the component (b) is an emulsifier containing an oil phase. The oil phase is a mixture of an emulsifier, polyethylene glycol and a mineral oil, the weight ratio of the nanoparticle hydrosol to the oil phase is 100:(30-60), preferably 100:(30-50) and more preferably 100:(35-45). The invention further provides a preparation method of the nano self-emulsification system.

Description

technical field [0001] The invention relates to a nano self-emulsifying system and a preparation method thereof. Background technique [0002] Regulating and flooding technology, as an important technical measure to improve the development effect of water flooding, control water and stabilize oil production to achieve stable production of reservoirs, can economically and effectively adjust and improve the heterogeneity of reservoirs, and has made a contribution to the sustained, stable and high production of water flooding oilfields. made an important contribution. However, when most reservoirs enter the middle and late stages of development, the heterogeneity of the reservoirs will have an increasingly serious impact on the displacement effects of water flooding and chemical flooding. The demand for profile control in high-temperature and high-salt reservoirs increases, and the effect of conventional control and flooding becomes worse. The reservoir has put forward higher ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/502C09K8/518
CPCC09K8/502C09K2208/10
Inventor 汪庐山王涛靳彦欣胡秋平徐鹏李潇菲韦雪朱妍婷刘军刘伟伟
Owner CHINA PETROLEUM & CHEM CORP
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