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Amphiphilic polymerizable monomer and amphiphilic tackifying copolymer, and preparation methods and application thereof

A technology of polymerizing monomers and amphiphilicity, which is applied in the preparation of organic compounds, chemical instruments and methods, and drilling compositions, etc. It can solve problems such as poor water solubility, prevent high-temperature hydrolysis, improve thermal stability, and improve The effect of oil displacement efficiency

Active Publication Date: 2012-05-16
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the shortcoming of the poor water solubility of the copolymer obtained by copolymerizing existing surface active monomers with monomers such as acrylamide, and provide a kind of amphiphilic polymerizable monomer with good surface activity and high temperature Amphiphilic amphiphilic copolymer with strong viscosifying performance and good solubility under high salt and preparation method thereof

Method used

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  • Amphiphilic polymerizable monomer and amphiphilic tackifying copolymer, and preparation methods and application thereof
  • Amphiphilic polymerizable monomer and amphiphilic tackifying copolymer, and preparation methods and application thereof
  • Amphiphilic polymerizable monomer and amphiphilic tackifying copolymer, and preparation methods and application thereof

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preparation example Construction

[0028] According to the preparation method of the amphiphilic polymerizable monomer of the present invention, the method comprises, under the amination reaction conditions of the acid anhydride, in an organic solvent, aliphatic amines with 6-18 carbon atoms or 6 carbon atoms -18 arylamine in contact with maleic anhydride.

[0029] In a preferred case, the molar ratio of the fatty amine or aromatic amine to maleic anhydride may be 0.8-10:1, preferably 1-5:1, more preferably 1-1.2:1, most preferably 1:1, when the amount of the aliphatic amine or aromatic amine and maleic anhydride is within the above range, it is beneficial to obtain the amphiphilic polymerizable monomer of the present invention.

[0030] In the preparation method of the amphiphilic polymerizable monomer of the present invention, the aliphatic amine having 6-18 carbon atoms can be n-hexylamine, n-octylamine, n-nonylamine, n-decylamine, n-dodecylamine and n-dodecylamine. Tetradecylamine, etc., the aromatic amine...

Embodiment 1

[0060] This example serves to illustrate the amphiphilic polymerizable monomers and amphiphilic adhesion-promoting copolymers of the present invention and methods for their preparation.

[0061] (1) Preparation of amphiphilic polymerizable monomers:

[0062] Add 1 mol of n-octylamine and 1 mol of maleic anhydride to 40 mol of diethyl ether, react at a reaction temperature of 10°C for 5 hours, filter, vacuum dry, and confirm by nuclear magnetic and infrared spectrum analysis to obtain amphiphilic Polymerized monomer n-octyl amido maleic acid (R in formula (1) is n-octyl).

[0063] (2) Preparation of tackifying polymer P1:

[0064] Add 12.8g of acrylamide, 6.8g of acrylic acid and 2.0g of n-octylamidomaleic acid obtained above into the polymerization reactor, add 55ml of deionized water, adjust the pH to 8.2 with sodium carbonate, and then pass through high-purity Nitrogen bubbling deoxygenation, add composite initiator 2.2mg after half an hour, this composite initiator is mad...

Embodiment 2

[0068]This example serves to illustrate the amphiphilic polymerizable monomers and amphiphilic adhesion-promoting copolymers of the present invention and methods for their preparation.

[0069] (1) Preparation of amphiphilic polymerizable monomers:

[0070] Add 1 mol of dodecylamine and 1 mol of maleic anhydride to 36 mol of chloroform, react at a reaction temperature of 15°C for 6 hours, filter, vacuum dry, and confirm by nuclear magnetic and infrared spectrum analysis to obtain amphiphilic Polymerized monomer n-dodecyl amido maleic acid (R in formula (1) is n-dodecyl).

[0071] (2) Preparation of tackifying polymer P2:

[0072] Add 11.8 g of acrylamide, 8.0 g of 2-acrylamido-2-methylpropanesulfonic acid and 1.6 g of n-dodecyl amido maleic acid obtained above into the polymerization reactor, add 55 ml of deionized water, and use Ammonia water adjusts the pH to 7.8, then feeds high-purity nitrogen gas bubbles to remove oxygen, and adds 2.8 mg of a composite initiator after h...

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Abstract

The invention provides an amphiphilic polymerizable monomer and an amphiphilic tackifying copolymer, and preparation methods and application thereof. The amphiphilic polymerizable monomer provided in the invention has both hydrophilic groups and hydrophobic groups in terms of its molecular structure; when used for preparation of a polymer, the monomer is capable of self-dissolving without addition of a surfactant and enables a copolymer with an amphiphilic micro-block structure to be obtained. A solution of the amphiphilic tackifying copolymer provided in the invention has good temperature tolerance, salt resistance and apparent viscosity and good stability under the conditions of high temperature and high salinity; the amphiphilic tackifying copolymer can be used as a polymer flooding agent and has effective effects of solubilizing, dispersing and the like on crude oil, which enables the copolymer to carry and draw residual crude oil difficult to displace, thereby improving oil displacement efficiency of the copolymer, and the amphiphilic tackifying copolymer is applicable to high temperature high salinity oil reservoirs and polymer-displaced oil reservoirs and can further improve a recovery rate of crude oil in tertiary oil recovery.

Description

technical field [0001] The invention relates to an amphiphilic polymerizable monomer and an amphiphilic viscosity-increasing copolymer as well as a preparation method and application thereof. Background technique [0002] With the in-depth development of oil extraction, all major oil fields in my country have entered the middle and late stages of exploitation. The water content of the produced oil is as high as 90%, and the temperature and salinity have increased significantly. The primary and secondary oil recovery technologies have been unable to meet the increasingly The increasing demand for crude oil, therefore, the use of tertiary oil recovery technology to enhance oil recovery has become an important strategic measure of my country's oil industry. [0003] Polymer flooding is one of the most effective methods in tertiary oil recovery technology. Polymer flooding requires that the polymer must have excellent viscosity-increasing properties under reservoir conditions, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C233/09C07C231/02C08F220/56C08F220/06C08F222/38C08F220/58C09K8/588
Inventor 吴江勇王晓春高文骥于芳王建宇杨捷
Owner CHINA PETROLEUM & CHEM CORP
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