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Triperfluorodecylsilicon-polyoxethyl-sodium benzenesulfonate polynary compounds as well as preparation method and application thereof

A technology of fluorodecyl silicon and polyethoxy, which is applied in the field of trisperfluorodecyl silicon-polyethoxy-sodium benzenesulfonate multi-component compound and its preparation, and can solve the problem of weakening, loss of synergy of components, loss of chromatographic effect, etc. Separation and other problems, to achieve the effect of promoting foaming effect, good foam stabilization effect, and simple preparation method

Inactive Publication Date: 2018-09-07
NANJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, most of the above-mentioned oil displacement agents are mixed reagents. Migration in the formation will cause differences in migration speed due to differences in molecular structure and polarity, resulting in chromatographic separation, resulting in weakened or even lost synergistic effects of various components.

Method used

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  • Triperfluorodecylsilicon-polyoxethyl-sodium benzenesulfonate polynary compounds as well as preparation method and application thereof
  • Triperfluorodecylsilicon-polyoxethyl-sodium benzenesulfonate polynary compounds as well as preparation method and application thereof
  • Triperfluorodecylsilicon-polyoxethyl-sodium benzenesulfonate polynary compounds as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The triperfluorodecyl silicon-polyethoxy-sodium benzenesulfonate compound of the present invention has a structural formula of:

[0026]

[0027] Among them, n=12-18.

[0028] The preparation method includes the following steps: firstly, put 100g of perfluorodecane and 9g of trifluorosilane in a reactor, protect it with nitrogen, and stir and react at 60°C for 1.5h; secondly, add concentrated sulfuric acid into the system, and raise the temperature to 150°C ℃, slowly add 40g of ethylene oxide, and continue to react for 1.5h; again, lower the temperature to about 100°C, add 11g of p-hydroxybenzenesulfonic acid to react for 1.5h; finally, add sodium hydroxide to adjust the pH value to 9 to obtain Multi-component compounds of the present invention.

[0029] When the multi-component compound prepared in this example is applied to oil displacement, the surface observation, foaming and foam stabilizing properties of its oil-based foam are characterized, and the obtained r...

Embodiment 2

[0031] The triperfluorodecyl silicon-polyethoxy-sodium benzenesulfonate compound of the present invention has a structural formula of:

[0032]

[0033] Among them, n=6-10.

[0034] The preparation method includes the following steps: first, 100 g of perfluorodecane and 13 g of trifluorosilane are placed in a reactor, protected by nitrogen gas, and stirred and reacted at 60 ° C for 1.5 h; secondly, concentrated sulfuric acid is added to the system, and the temperature is raised to 150 ℃, slowly add 45g of ethylene oxide, and continue to react for 1.5h; again, lower the temperature to about 100°C, add 13g of p-hydroxybenzenesulfonic acid for 1.5h; finally, add sodium hydroxide to adjust the pH value to 8.5, and you can get Multi-component compounds of the present invention.

Embodiment 3

[0036] The triperfluorodecyl silicon-polyethoxy-sodium benzenesulfonate compound of the present invention has a structural formula of:

[0037]

[0038] Among them, n=12-16.

[0039] The preparation method includes the following steps: firstly, put 100g of perfluorodecane and 8g of trifluorosilane in a reactor, protect it with nitrogen, and stir and react at 60°C for 1.5h; secondly, add concentrated sulfuric acid into the system, and raise the temperature to 150 ℃, slowly add 54g ethylene oxide, and continue to react for 1.5h; again, lower the temperature to about 100°C, add 12g p-hydroxybenzenesulfonic acid to react for 1.5h; finally, add sodium hydroxide to adjust the pH value to 8 to obtain Multi-component compounds of the present invention.

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Abstract

The invention discloses triperfluorodecylsilicon-polyoxethyl-sodium benzenesulfonate polynary compounds as well as a preparation method and application thereof. The polynary compounds are formed by compounding perfluorodecane, trifluorosilane, ethylene oxide and p-hydroxybenzenesulfonic acid; and the preparation method comprises the following steps: mixing the perfluorodecane and the trifluorosilane, performing acidification, performing heating to temperature of 150-170 DEG C, adding the ethylene oxide, after a reaction is finished, adding the p-hydroxybenzenesulfonic acid, and finally adjusting a pH to 8-9.5, so as to obtain one polynary compound. The polynary compounds disclosed by the invention are used in oil fields for foam flooding; the polynary compounds not only can be foamed efficiently, but also have an excellent foam stabilizing effect, do not have chromatographic separation when being moved in a formation, and especially have an excellent foam blooding effect on a high-oil-content (an oil content of 80-95%) high-wax foam system; and meanwhile, the preparation method is simple, and has high operability and low costs.

Description

technical field [0001] The invention belongs to the field of foam oil displacement agents, and in particular relates to a triperfluorodecyl silicon-polyethoxy-sodium benzenesulfonate compound and its preparation method and application. Background technique [0002] Foam fluid has been used in the development of oil fields for more than 40 years at home and abroad. Wells, drilling, profile control, water plugging, acidification, cement cementing and fracturing have been applied in many aspects of oil and gas field development, and have achieved positive results. A large number of practices have shown that foam flooding is an important means to protect oil layers, prevent oil layer pollution, and increase oil and gas production. With the continuous improvement of people's recognition of foam technology, foam flooding means and foam flooding agent will become one of the main technologies of tertiary oil recovery. There are a large number of low-permeability and water-sensitiv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F7/08C09K8/584C08G65/26C08G65/334
CPCC09K8/584C07F7/0827C08G65/2639C08G65/3346
Inventor 莫宏王达炜沈健侯庆锋杨仲斌金锐赵越何磊付磊冯福玲章峻
Owner NANJING NORMAL UNIVERSITY
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