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Tri-perfluor decyl silicon-polyethyoxyl-naphthalenesulfonic acid sodium multielement compound 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 naphthalene sulfonate multi-component compound and its preparation, and can solve the problem of weakening the synergistic effect of components, chromatographic separation, Loss and other problems, to achieve the effect of promoting foaming effect, simple preparation method and good foam stabilization effect

Inactive Publication Date: 2018-09-21
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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  • Tri-perfluor decyl silicon-polyethyoxyl-naphthalenesulfonic acid sodium multielement compound as well as preparation method and application thereof
  • Tri-perfluor decyl silicon-polyethyoxyl-naphthalenesulfonic acid sodium multielement compound as well as preparation method and application thereof
  • Tri-perfluor decyl silicon-polyethyoxyl-naphthalenesulfonic acid sodium multielement compound as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Triperfluorodecyl silicon-polyethoxy-sodium naphthalenesulfonate 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 14g of p-hydroxynaphthalenesulfonic acid 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 result...

Embodiment 2

[0031] Triperfluorodecyl silicon-polyethoxy-sodium naphthalenesulfonate 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 17g of p-hydroxynaphthalenesulfonic acid to react for 1.5h; finally, add sodium hydroxide to adjust the pH value to 8.5 to obtain Multi-component compounds of the present invention.

Embodiment 3

[0036] Triperfluorodecyl silicon-polyethoxy-sodium naphthalenesulfonate 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 15g p-hydroxynaphthalenesulfonic 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 a tri-perfluor decyl silicon-polyethyoxyl-naphthalenesulfonic acid sodium multielement compound as well as a preparation method and application thereof. The multielement compound is prepared from perfluor decane, trifluoroalkyl silane, ethylene oxide and p-croceic acid through compounding. The preparation method comprises the following steps: mixing the perfluor decane andthe trifluoroalkyl silane, acidifying, heating to 150-170 DEG C, adding ethylene oxide, further adding p-croceic acid after reactions, and finally adjusting the pH value to 8-9.5, thereby obtaining the multielement compound. The multielement compound disclosed by the invention is applied to oil fields to carry out foam oil expelling. The multielement compound disclosed by the invention is not onlycapable of generating foams efficiently, but also good in foam stabilization effect, has no spectrum separation in stratum migration, particularly has a good foam oil expelling effect on high oil content (the oil content is 80-95%) and high wax foam systems, and meanwhile is simple in preparation method, high in operability and low in cost.

Description

technical field [0001] The invention belongs to the field of foam oil displacement agents, in particular to a triperfluorodecyl silicon-polyethoxy-sodium naphthalenesulfonate 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): C07F7/08C09K8/584C09K8/588C09K8/88E21B43/22C08G65/28C08G65/26
CPCE21B43/16C09K8/584C09K8/588C09K8/885C07F7/0827C08G65/2636C08G65/2639
Inventor 沈健王达炜章峻侯庆锋杨仲斌金锐赵越付磊冯福玲何磊莫宏
Owner NANJING NORMAL UNIVERSITY
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