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Triperfluor silicon-polyethyoxyl-oleate multi-element compound as well as preparation method and application thereof

A fluorodecylsilicon and polyethoxy technology, which is applied in the field of trisperfluorodecylsilicon-polyethoxy-oleate multicomponent compounds and their preparation, can solve the problem of weakening, loss of synergy of components, and chromatographic separation. and other problems, to achieve the effect of promoting foaming effect, good foam stabilization effect and simple preparation method

Inactive Publication Date: 2018-08-28
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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  • Triperfluor silicon-polyethyoxyl-oleate multi-element compound as well as preparation method and application thereof
  • Triperfluor silicon-polyethyoxyl-oleate multi-element compound as well as preparation method and application thereof
  • Triperfluor silicon-polyethyoxyl-oleate multi-element compound as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The triperfluorodecyl silicon-polyethoxy-oleate 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: 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, cool down to about 100°C, add 21g of oleic acid to react for 1.5h; finally, add sodium hydroxide to adjust the pH value to 7, and the present invention can be prepared Multivariate compound.

[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 results are as follows Figu...

Embodiment 2

[0031] The triperfluorodecyl silicon-polyethoxy-oleate 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 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, cool down to about 100°C, add 17.5g of oleic acid to react for 1.5h; finally, add sodium hydroxide to adjust the pH value to 7, and the present invention can be obtained of multiple compounds.

Embodiment 3

[0036] The triperfluorodecyl silicon-polyethoxy-oleate 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: 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 of ethylene oxide, and continue to react for 1.5h; again, cool down to about 100°C, add 19g of oleic acid to react for 1.5h; finally, add sodium hydroxide to adjust the pH value to 8, and the present invention can be prepared Multivariate compound.

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Abstract

The invention discloses a triperfluor silicon-polyethyoxyl-oleate multi-element compound as well as a preparation method and the application thereof. The multi-element compound is prepared from perfluor decane, trifluoro-silane, ethylene oxide and oleic acid through compounding. The preparation method comprises the following steps: mixing the perfluor decane and the trifluoro-silane, acidizing, heating to 150-170 DEG C, adding the ethylene oxide, performing a reaction, adding oleic acid, and finally adjusting the pH value to 7-8. The multi-element compound disclosed by the invention is used inan oil field for reservoir oil foam displacement. The multi-element compound disclosed by the invention is not only capable of foaming efficiently, but also good in bubble stabilization effect, freeof spectrum separation in stratum migration, particularly good in reservoir oil foam displacement effect on high oil content (the oil content is 80-95%) and high wax foam systems, meanwhile is simplein 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 triperfluorodecyl silicon-polyethoxy-oleate 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-sensitive...

Claims

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Application Information

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IPC IPC(8): B01F17/54C07F7/08C09K8/584C09K8/588C08G65/26E21B43/22C09K23/54
CPCE21B43/16C09K8/584C09K8/588C07F7/0827C08G65/2639C09K23/00
Inventor 莫宏王达炜沈健侯庆锋金锐杨仲斌付磊赵越何磊冯福玲章峻
Owner NANJING NORMAL UNIVERSITY
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