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Dimethyl-monoperfluor decyl silicon-polyethyoxyl-sodium benzenesulfonate polycompound as well as preparation method and application thereof

A technology of perfluorodecyl and polyethoxy is applied in the field of foam oil displacement agents, which can solve the problems of weakening, loss of component synergy, chromatographic separation, etc., and achieves improved emulsifying performance, good foam stabilization effect and simple preparation method. Effect

Inactive Publication Date: 2018-09-04
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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  • Dimethyl-monoperfluor decyl silicon-polyethyoxyl-sodium benzenesulfonate polycompound as well as preparation method and application thereof
  • Dimethyl-monoperfluor decyl silicon-polyethyoxyl-sodium benzenesulfonate polycompound as well as preparation method and application thereof
  • Dimethyl-monoperfluor decyl silicon-polyethyoxyl-sodium benzenesulfonate polycompound as well as preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[0026]

[0027] Among them, n=10-18.

[0028] The preparation method includes the following steps: first, 50 g of perfluorodecane and 12 g of dimethylfluorosilane 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 To 150°C, slowly add 60g of ethylene oxide, and continue to react for 1.5h; again, cool down to about 100°C, add 19g of p-hydroxybenzenesulfonic acid to react for 1.5h; finally, add sodium hydroxide to adjust the pH value to 9, and you can The multicomponent compounds of the present invention are produced.

[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-ba...

Embodiment 2

[0032] The dimethyl-monoperfluorodecyl silicon-polyethoxy-sodium benzenesulfonate compound of the present invention has a structural formula of:

[0033]

[0034] Among them, n=6-14.

[0035] The preparation method includes the following steps: first, 50 g of perfluorodecane and 9.4 g of dimethylfluorosilane are placed in a reactor, protected by nitrogen gas, 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 40g of ethylene oxide, and continue the reaction for 1.5h; again, cool down to about 100°C, add 17g of p-hydroxybenzenesulfonic acid to react for 1.5h; finally, add sodium hydroxide to adjust the pH value to 8.5, that is Multiple compounds of the invention can be prepared.

Embodiment 3

[0037] The dimethyl-monoperfluorodecyl silicon-polyethoxy-sodium benzenesulfonate compound of the present invention has a structural formula of:

[0038]

[0039] Among them, n=12-16.

[0040] The preparation method includes the following steps: first, 50 g of perfluorodecane and 9.4 g of dimethylfluorosilane are placed in a reactor, protected by nitrogen gas, 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 18g of p-hydroxybenzenesulfonic acid to react for 1.5h; finally, add sodium hydroxide to adjust the pH value to 8, that is Multiple compounds of the invention can be prepared.

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Abstract

The invention discloses a dimethyl-monoperfluor decyl silicon-polyethyoxyl-sodium benzenesulfonate polycompound as well as a preparation method and application thereof. The polycompound is prepared from perfluor decane, dimethyl fluoroalkyl silane, ethylene oxide and p-hydroxybenzenesulfonic acid through compounding. The preparation method comprises the following steps: mixing perfluor decane withdimethyl fluoroalkyl silane, acidifying, heating to 150-170 DEG C, adding ethylene oxide, implementing a reaction, adding the p-hydroxybenzenesulfonic acid, and finally adjusting the pH value to 8-9.5, thereby obtaining the polycompound. The polycompound is applied to foam oil expelling in an oil field. The polycompound disclosed by the invention is not only capable of efficiently forming foams,but also good in foam stabilization effect, is free of spectrum separation in stratum migration, and is particularly good in foam oil expelling effect in low-seepage and water sensitive oil field; andbesides, the polycompound 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 dimethyl-monoperfluorodecyl 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 wate...

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 章峻王达炜沈健侯庆锋金锐杨仲斌赵越何磊付磊冯福玲莫宏
Owner NANJING NORMAL UNIVERSITY
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