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Acrylamide monomer and its preparation method and acrylamide copolymer and its preparation method and application

A technology of acrylamide copolymer and acrylamide copolymerization, which is applied in the direction of sulfonic acid preparation, drilling composition, chemical instruments and methods, etc., can solve the problems of poor temperature and salt resistance, and achieve not easy curling and improved salt resistance Performance, large volume effect

Active Publication Date: 2015-09-16
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 and application

Method used

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  • Acrylamide monomer and its preparation method and acrylamide copolymer and its preparation method and application
  • Acrylamide monomer and its preparation method and acrylamide copolymer and its preparation method and application
  • Acrylamide monomer and its preparation method and acrylamide copolymer and its preparation method and application

Examples

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Embodiment 1

[0093] This example is used to illustrate the acrylamide monomer and acrylamide copolymer provided by the present invention and its preparation method

[0094] (1) Preparation of acrylamide monomer

[0095] Add 100 kg of concentrated sulfuric acid with a weight concentration of 98% into the reaction kettle, add 530 kg of acrylonitrile, cool the mixture to -5°C, stir evenly, add 104.14 kg of styrene, 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.

[0096] (2) Preparation of acrylamide copolymer

[0097] Add 927.09 kg of acrylamide (AM) and 831.46 kg of acrylamide monomer M1, and 7034.2 kg of deionized water into the batching kettle. While stirring, use frozen brine to control the solution temperature -7°C, and add sodium hydroxide to ad...

Embodiment 2

[0101] This example is used to illustrate the acrylamide monomer and acrylamide copolymer provided by the present invention and the preparation method thereof.

[0102] (1) Preparation of acrylamide monomer

[0103] Add 117.6 kg of concentrated sulfuric acid with a weight concentration of 98% to the reaction kettle, add 1060 kg of acrylonitrile, cool the mixture to 15°C, stir evenly, add 104.14 kg of styrene, 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.

[0104] (2) Preparation of acrylamide copolymer

[0105] Add 1108.85 kg of AM, 102.00 kg of acrylamide monomer M2, and 2825.3 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 a...

Embodiment 3

[0107] This example is used to illustrate the acrylamide monomer and acrylamide copolymer provided by the present invention and the preparation method thereof.

[0108] (1) Preparation of acrylamide monomer

[0109] Add 107.8 kg of concentrated sulfuric acid with a weight concentration of 98% to the reaction kettle, add 636 kg of acrylonitrile, cool the mixture to 5°C, stir evenly, add 104.14 kg of styrene, 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.

[0110] (2) Preparation of acrylamide copolymer

[0111] Add 1,080.4 kg of AM, 204.0 kg of temperature-resistant and salt-resistant monomer M3, and 3,853.2 kg of deionized water into the batching kettle. While stirring, use frozen brine to control the solution temperature at 0°C, and add...

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Abstract

The invention relates to an acrylamide monomer and a preparation method. The method comprises the following steps: contacting styrene, a sulfonating agent and acrylonitrile for 1-4 hours under -5-15 DEG C to obtain the acrylamide monomer. The invention also relates to the acrylamide copolymer, a preparation method and an 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, and 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.

Description

technical field [0001] The invention relates to an acrylamide monomer and its preparation method; the invention also relates to an acrylamide copolymer and its preparation method and application; the invention further relates to an oil displacement agent. 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 increasing oilfield production. With the reduction of reserves in conventional oil reservoirs, the applicat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C309/24C07C303/06C08F220/58C08F220/06C08F8/12C09K8/588
Inventor 伊卓黄凤兴林蔚然祝纶宇
Owner CHINA PETROLEUM & CHEM CORP
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