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Temperature-resistant polyacrylamide preparation method

A technology of polyacrylamide and acrylamide, which is applied in the field of preparation of temperature-resistant polyacrylamide, can solve the problems of limited oil recovery, large influence of control and flooding fluid, and low temperature resistance, and achieve increased and stable viscosity retention Good performance, improve the effect of temperature resistance

Inactive Publication Date: 2018-12-25
NINGXIA PAGODA CHEM CENT LAB CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The most common application of polyacrylamide in China is oil displacement agent for tertiary oil recovery. The main disadvantage of the oil displacement agent used in oilfields at present is that it has low temperature resistance. Reservoir temperature has a great influence, which limits the recovery of oilfields

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Weigh 99.86g of acrylamide solution with a volume fraction of 20% in a beaker, weigh 0.14g of an ammonium persulfate solution with a volume fraction of 10%, add it to the acrylamide solution under stirring conditions, and then turn the beaker into a water bath In the pot, heat up to 60°C, stir slowly, and observe the change of solution viscosity. After 30 minutes, the heating was stopped to obtain polyacrylamide.

[0013] Prepare the obtained polyacrylamide into a 5% solution, then weigh 90.9g, add 9.1g of 10% sodium hydroxide solution, and heat to 90°C for hydrolysis. After 30 minutes, it was taken out to obtain hydrolyzed polyacrylamide colloid. Weigh 99.5 g of hydrolyzed polyacrylamide colloid, put it into a kneader, add graphene with a mass of 0.5 g at the same time, and run the kneader for 15 minutes to obtain heat-resistant polyacrylamide.

Embodiment 2

[0015] Weigh 99.86g of acrylamide solution with a volume fraction of 20% in a beaker, weigh 0.14g of ammonium persulfate with a volume fraction of 10%, add it to the acrylamide solution under stirring conditions, and then transfer the beaker to a water bath Inside, raise the temperature to 60°C, stir slowly, and observe the change of solution viscosity. After 30 minutes, the heating was stopped to obtain polyacrylamide.

[0016] Prepare the obtained polyacrylamide into a 5% solution, then weigh 90.9g, add 9.1g of 10% sodium hydroxide solution, and heat to 90°C for hydrolysis. After 30 minutes, it was taken out to obtain hydrolyzed polyacrylamide colloid. Weigh 99 g of hydrolyzed polyacrylamide colloid and put it into a kneader, add graphene with a mass of 1 g at the same time, run the kneader for 15 minutes and discharge to obtain a temperature-resistant polyacrylamide.

Embodiment 3

[0018] Weigh 99.86g of acrylamide solution with a volume fraction of 20% in a beaker, weigh 0.14g of ammonium persulfate with a volume fraction of 10%, add it to the acrylamide solution under stirring conditions, and then transfer the beaker to a water bath Inside, raise the temperature to 60°C, stir slowly, and observe the change of solution viscosity. After 30 minutes, the heating was stopped to obtain polyacrylamide.

[0019] Prepare the obtained polyacrylamide into a 5% solution, weigh 90.9%, add 10% sodium hydroxide solution with a mass of 9.1%, and heat to 90°C for hydrolysis. After 30 minutes, it was taken out to obtain hydrolyzed polyacrylamide colloid. Weigh 97 g of hydrolyzed polyacrylamide colloid and put it into a kneader, add graphene with a mass of 3 g at the same time, run the kneader for 15 minutes and discharge to obtain a temperature-resistant polyacrylamide.

[0020] The polyacrylamide and heat-resistant polyacrylamide obtained in Examples 1-3 were granula...

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Abstract

The invention discloses a temperature-resistant polyacrylamide preparation method. The method includes: taking acrylamide as a raw material, preparing into polyacrylamide, preparing into hydrolytic polyacrylamide, adding graphene to obtain temperature-resistant polyacrylamide, and drying and grinding to obtain a fine particle product. The viscosity keeping rate of the temperature-resistant polyacrylamide prepared according to the method is remarkably increased, temperature resistance of polyacrylamide is evidently improved, and high stability is realized.

Description

technical field [0001] The invention relates to a preparation method of temperature-resistant polyacrylamide, which is used as an oil displacement agent for oil exploitation. Background technique [0002] The most common application of polyacrylamide in China is oil displacement agent for tertiary oil recovery. The main disadvantage of the oil displacement agent used in oilfields at present is that it has low temperature resistance. Reservoir temperature has a great influence, which limits the recovery rate of the oil field. Contents of the invention [0003] The purpose of the present invention is to provide a preparation method of temperature-resistant polyacrylamide, which has the advantages of high temperature resistance, good solution stability, little damage to oil reservoirs, and low construction risk. [0004] For realizing above object, the technical scheme that the present invention adopts is as follows: [0005] A preparation method of heat-resistant polyacryl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/26C08K3/04C08F8/12C08F120/56
CPCC08F8/12C08K3/042C08L33/26C08F120/56
Inventor 刘晓燕王国瑞闫升王千里张娟康慧芬杨晓丽孙培华张秉钧
Owner NINGXIA PAGODA CHEM CENT LAB CO LTD
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