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Acrylamide monomer and acrylamide copolymer, method of preparation, application and oil displacement agent

An acrylamide copolymer and acrylamide copolymerization technology are applied in the direction of chemical instruments and methods, sulfonic acid preparation, drilling compositions, etc., which can solve the problems of poor temperature resistance and salt resistance, and achieve curling resistance, large volume, Effect of improving hydrolysis resistance

Active Publication Date: 2014-05-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the defects of poor temperature and salt resistance of polymer oil displacement agents in the prior art, and provide an acrylamide copolymer obtained after copolymerization with acrylamide, which has good temperature and salt resistance. Monomer and its preparation method, acrylamide copolymer, its preparation method and application, and oil displacement agent

Method used

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  • Acrylamide monomer and acrylamide copolymer, method of preparation, application and oil displacement agent
  • Acrylamide monomer and acrylamide copolymer, method of preparation, application and oil displacement agent
  • Acrylamide monomer and acrylamide copolymer, method of preparation, application and oil displacement agent

Examples

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Effect test

Embodiment 1

[0092] This example is used to illustrate the acrylamide monomer and acrylamide copolymer provided by the present invention and the preparation method thereof.

[0093] (1) Preparation of acrylamide monomer

[0094] Add 98 kg of concentrated sulfuric acid to the reaction kettle, add 530 kg of acrylonitrile, cool the mixture to -5°C, stir well, add 70.14 kg of 3-methyl-2-butene, and keep the temperature of the reaction system below 5°C . Continue to stir the reaction for 2h, static, and crystals are precipitated. After filtering, washing, refining and drying, the pure monomer was obtained, and the product yield was 95.5%, and the acrylamide monomer M1 was obtained.

[0095] (2) Preparation of acrylamide copolymer

[0096] Add 927.09 kg of AM, 720.60 kg of acrylamide monomer M1, and 6590.76 kg of deionized water into the batching kettle. While stirring, control the temperature of the solution with frozen brine to -7°C, and add sodium hydroxide to adjust the pH to 7. Pump the...

Embodiment 2

[0100] This example is used to illustrate the acrylamide monomer and acrylamide copolymer provided by the present invention and the preparation method thereof.

[0101] (1) Preparation of acrylamide monomer

[0102] Add 117.6 kg of concentrated sulfuric acid into the reaction kettle, add 1060 kg of acrylonitrile, cool the mixture to 15°C, stir evenly, add 70.14 kg of 3-methyl-2-butene, and keep the temperature of the reaction system below 5°C. Continue to stir the reaction for 4h, static, and crystals are precipitated. After filtering, washing, refining and drying, the pure monomer was obtained, and the product yield was 96%, and the acrylamide monomer M2 was obtained.

[0103] (2) Preparation of acrylamide copolymer

[0104] Add 1108.85 kg of AM, 88.4 kg of acrylamide monomer M2, and 2793.5 kg of deionized water into the batching kettle. While stirring, control the temperature of the solution with frozen brine to 15°C, and add sodium hydroxide to adjust the pH to 5. Pump t...

Embodiment 3

[0106] This example is used to illustrate the acrylamide monomer and acrylamide copolymer provided by the present invention and the preparation method thereof.

[0107] (1) Preparation of acrylamide monomer

[0108] Add 107.8 kg of concentrated sulfuric acid into the reaction kettle, add 636 kg of acrylonitrile, cool the mixture to 5°C, stir evenly, add 70.14 kg of 3-methyl-2-butene, and keep the temperature of the reaction system below 5°C. Continue to stir the reaction for 3h, static, and crystals are precipitated. After filtering, washing, refining and drying, the pure monomer was obtained, and the product yield was 97%, and the acrylamide monomer M3 was obtained.

[0109] (2) Preparation of acrylamide copolymer

[0110] Add 1,080.4 kg of AM, 176.8 kg of temperature-resistant and salt-resistant monomer M3, and 3,771.6 kg of deionized water into the batching kettle. While stirring, use frozen brine to control the solution temperature at 0°C, and add sodium hydroxide to adj...

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Abstract

The invention relates to an acrylamide monomer and a preparation method, the method comprises the following steps: contacting 3-methyl-2-butylene, a sulfonating agent and acrylonitrile for 1-4 hours under -5-15 DEG C to obtain the acrylamide monomer in a formula (I). The invention also relates to the acrylamide copolymer, the preparation method and the application. The preparation method comprises the following steps: under the condition of a solution polymerization reaction, under the existence of an initiator, a monomer mixture is performed with polymerization, the monomer mixture contains acrylamide and a monomer C, the viscosity-average molecular weight of the obtained after polymerization is more than 30 million by the condition of the solution polymerization reaction. The acrylamide copolymer is capable of resisting high temperature, and has good viscosifying effect under high ore degree, can be widely used in petroleum chemical field, and can especially be a displacement agent for three-time oil extraction oil. (img file='DDA00002332890900011.TIF' wi='747' he='220' / ) is formula (I).

Description

technical field [0001] The present invention relates to a kind of acrylamide monomer and its preparation method; The present invention also relates to a kind of acrylamide copolymer and its preparation method; The present invention further relates to a kind of oil displacement agent; The present invention further relates to the acrylamide copolymer application. Background technique [0002] Polymer flooding mainly injects a certain scale of polymer solution, increases the viscosity of the displacement fluid, and reduces the water phase permeability of the oil layer to reduce the mobility ratio and adjust the water absorption profile to achieve the purpose of increasing the volume of the displacement phase, thereby improving the recovery. Rate. As the main polymer oil displacement agent, partially hydrolyzed polyacrylamide (HPAM) has been popularized and applied on a large scale in conventional oil reservoir EOB technology, and has played an important role in stabilizing and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C309/15C07C303/06C08F220/56C08F220/58C08F8/12C09K8/588
Inventor 伊卓黄凤兴张文龙刘希
Owner CHINA PETROLEUM & CHEM CORP
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