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Polymer stabilizer-fatty ammonium salt for increasing recovery ratio

A technology of fatty ammonium salt and polymer, which is applied in drilling compositions, preparation of organic compounds, organic chemistry, etc., can solve the problems of few research reports, low yield, immature synthesis technology, etc., and has broad application prospects. , The effect of inhibiting viscosity decay and superior product performance

Inactive Publication Date: 2019-02-22
TIANJIN DAGANG OILFIELD BINGANG GRP BOHONG PETROLEUM CHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many kinds of products related to fatty amine salts in China, but there are few related research reports, the synthesis technology is immature, and the yield is low

Method used

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  • Polymer stabilizer-fatty ammonium salt for increasing recovery ratio
  • Polymer stabilizer-fatty ammonium salt for increasing recovery ratio
  • Polymer stabilizer-fatty ammonium salt for increasing recovery ratio

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A polymer stabilizer-fatty ammonium salt for enhanced oil recovery,

[0031] The preparation of described fatty tertiary amine comprises the following steps:

[0032] (1) Octanoic acid and dimethyl-propylenediamine are put into the reaction kettle, the n (octanoic acid):n (dimethyl-propylenediamine)=1:1.5, then filled with nitrogen, and then the temperature rises to 140°C, closed reaction for 9.5 hours;

[0033] (2) The solution obtained in step (1) was distilled under reduced pressure for 30min, and excessive dimethyl-propylenediamine was steamed to obtain a crude product;

[0034] (3) Purify by repeated recrystallization, and obtain a light yellow solid product after vacuum drying. The conversion rate of fatty acid was 94.1%.

[0035] The preparation of described quaternary ammonium salt comprises the following steps:

[0036] (1) Put the tertiary amine product obtained by formula (I) and 3-chloro-1,2-propanediol into the reaction kettle, n(tertiary amine):n(3-chl...

Embodiment 2

[0039] A polymer stabilizer-fatty ammonium salt for enhanced oil recovery,

[0040] The preparation of described fatty tertiary amine comprises the following steps:

[0041] (1) Put myristic acid and dimethyl-propylenediamine into the reaction kettle, said n (myristic acid):n (dimethyl-propylenediamine)=1:2, and then fill with nitrogen, Then the temperature was raised to 150°C, and the reaction was closed for 9.5 hours;

[0042] (2) The solution obtained in step (1) was distilled under reduced pressure for 30min, and excessive dimethyl-propylenediamine was steamed to obtain a crude product;

[0043] (3) Purify by repeated recrystallization, and obtain a light yellow solid product after vacuum drying. The conversion rate of fatty acid was 94.2%.

[0044] The preparation of described quaternary ammonium salt comprises the following steps:

[0045] (1) Put the tertiary amine product obtained by formula (I) and 3-chloro-1,2-propanediol into the reaction kettle, n(tertiary amin...

Embodiment 3

[0048] A polymer stabilizer-fatty ammonium salt for enhanced oil recovery,

[0049] The preparation of described fatty tertiary amine comprises the following steps:

[0050] (1) Put capric acid and dimethyl-propylenediamine into the reaction kettle, the n (decanoic acid): n (dimethyl-propylenediamine) = 1: 1.5, then fill with nitrogen, and then the temperature Rising to 140°C, closed reaction for 9.5 hours;

[0051] (2) The solution obtained in step (1) was distilled under reduced pressure for 30min, and excessive dimethyl-propylenediamine was steamed to obtain a crude product;

[0052] (3) Purify by repeated recrystallization, and obtain a light yellow solid product after vacuum drying. The conversion rate of fatty acid was 94.5%.

[0053] The preparation of described quaternary ammonium salt comprises the following steps:

[0054] (1) Put the tertiary amine product obtained by formula (I) and 3-chloro-1,2-propanediol into the reaction kettle, n(tertiary amine):n(3-chloro...

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Abstract

The invention provides a polymer stabilizer-fatty ammonium salt for increasing the recovery ratio. By optimizing the conditions of a preparation technology and exploring the molar ratio of the feeding, the conversion rate of a fatty acid in the synthesis process of tertiary aliphatic amine can reach 94%, and the yield of a quaternary ammonium salt can reach more than 90% in the end; and the synthesized product can meet the requirements of environmental protection and has the characteristics of polymer stabilizer performances. The product has superior performances, can interact with a polymer in a sewage environment, and inhibits the viscosity attenuation of a polymer solution in the sewage environment, thereby improving the salt tolerance of the polymer. The polymer stabilizer-fatty ammonium salt has broad application prospect.

Description

technical field [0001] The invention relates to the technical field of chemical synthesis, in particular to a polymer stabilizer-fatty ammonium salt for enhancing oil recovery. Background technique [0002] As a polymer stabilizer, fatty amine salt can effectively retain the viscosity of polymer molecules in sewage. The 0.01%-0.02% stabilizer solution can make the viscosity retention rate of the polymer solution in seepage flow more than 90%, providing guarantee for tertiary oil recovery. There are many kinds of products related to fatty amine salts in China, but there are few related research reports, the synthesis technology is immature, and the yield is low. The patent research of the present invention determines the molar ratio with the largest conversion rate by exploring the molar ratio of feed. The synthesized product can not only meet the requirements of environmental protection but also have the performance characteristics of polymer stabilizer. Contents of the ...

Claims

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Application Information

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IPC IPC(8): C07C231/12C07C233/36C08K5/19C09K8/588
CPCC07C231/02C07C231/12C07C233/36C08K5/19C09K8/588
Inventor 陈芝娟王欢李雷振毛艳妮刘存辉兰海宽石昀胡良义吴海宁张宇郭永平王志宏孙凤萍
Owner TIANJIN DAGANG OILFIELD BINGANG GRP BOHONG PETROLEUM CHEM
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