Methyl-biperfluor decyl silicon-polyethyoxyl-stearate multi-element compound as well as preparation method and application thereof

A technology of fluorodecylsilicon and polyethoxy, which is applied in the field of methyl-bisperfluorodecylsilicon-polyethoxy-stearate multiple compounds and its preparation, and can solve the problem of weakening and loss of synergistic effects of components , chromatographic separation and other issues, to achieve the effect of promoting foaming effect, good foam stabilizing effect, and simple preparation method

Inactive Publication Date: 2018-10-19
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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  • Methyl-biperfluor decyl silicon-polyethyoxyl-stearate multi-element compound as well as preparation method and application thereof
  • Methyl-biperfluor decyl silicon-polyethyoxyl-stearate multi-element compound as well as preparation method and application thereof
  • Methyl-biperfluor decyl silicon-polyethyoxyl-stearate multi-element compound as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The methyl-bisperfluorodecyl silicon-polyethoxy-stearate multi-component 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: first, 100 g of perfluorodecane and 14.5 g of monomethyldifluorosilane 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 , heat up to 150°C, slowly add 60g of ethylene oxide, and continue to react for 1.5h; again, cool down to about 100°C, add 21g of stearic acid to react for 1.5h; finally add sodium hydroxide to adjust the pH value to 7, and you can make The multi-component compound of the present invention is obtained.

[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 t...

Embodiment 2

[0031]The methyl-bisperfluorodecyl silicon-polyethoxy-stearate multi-component 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 11.5 g of monomethyldifluorosilane are placed in a reactor, protected by nitrogen gas, and stirred at 60°C for 1.5 hours; secondly, concentrated sulfuric acid is added to the system , raise the temperature to 150°C, slowly add 40g of ethylene oxide, and continue the reaction for 1.5h; again, lower the temperature to about 100°C, add 17.5g of stearic acid to react for 1.5h; finally, add sodium hydroxide to adjust the pH value to 7, that is Multiple compounds of the invention can be prepared.

Embodiment 3

[0036] The methyl-bisperfluorodecyl silicon-polyethoxy-stearate multi-component 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: first, 100 g of perfluorodecane and 11.5 g of monomethyldifluorosilane are placed in a reactor, protected by nitrogen, and stirred at 60 ° C for 1.5 h; secondly, concentrated sulfuric acid is added to the system , raise the temperature to 150°C, slowly add 55g of ethylene oxide, and continue the reaction for 1.5h; again, cool down to about 100°C, add 19g of stearic acid to react for 1.5h; finally, add sodium hydroxide to adjust the pH value to 8, and you can The multicomponent compounds of the present invention are produced.

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Abstract

The invention discloses a methyl-biperfluor decyl silicon-polyethyoxyl-stearate multi-element compound as well as a preparation method and application thereof. The multi-element compound is prepared from perfluordecane, monomethyl difluoro silane, ethylene oxide and stearic acid through compounding; the preparation method comprises the following steps: mixing the perfluordecane with the monomethyldifluoro silane, acidifying, heating to 150-170 DEG C, adding the ethylene oxide, enabling the components to react, further adding the stearic acid, and finally adjusting the pH value to 7-8, therebyobtaining the multi-compound. The multi-element compound disclosed by the invention is applied to foam flooding in oil fields. The multi-element compound disclosed by the invention is not only capable of forming foams simply and efficiently, but also good in foam stabilization effect, free of spectrum separation when being migrated in a stratum, particularly good in foam flooding in low-seepage and water-sensitive oil fields, and meanwhile is simple in preparation method, good in operability and low in cost.

Description

technical field [0001] The invention belongs to the field of foam oil displacement agents, and in particular relates to a methyl-bisperfluorodecyl silicon-polyethoxy-stearate multi-component 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-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/26C08G65/332C07F7/08C09K8/594
CPCC08G65/2639C07F7/0827C08G65/3322C09K8/594
Inventor 章峻王达炜沈健侯庆锋金锐杨仲斌付磊赵越何磊冯福玲莫宏
Owner NANJING NORMAL UNIVERSITY
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