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Preparation method of hydrophobically associating polymer inverse emulsion

An inverse emulsion and hydrophobic association technology, which is applied in the field of preparation of hydrophobically associated polymer inverse emulsion, can solve the problems of slow dissolution process and complicated post-processing

Active Publication Date: 2016-03-23
陕西亘合石油科技有限公司
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  • Application Information

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Problems solved by technology

[0007] However, the cyclodextrin in the above patent documents only replaces the surfactant to optimize the product, and does not fundamentally change the type of emulsion
Moreover, the product obtained in the above-mentioned patent documents is an adhesive or a tackifier, the dissolution process is slow, and the post-processing is complicated

Method used

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  • Preparation method of hydrophobically associating polymer inverse emulsion
  • Preparation method of hydrophobically associating polymer inverse emulsion
  • Preparation method of hydrophobically associating polymer inverse emulsion

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Embodiment Construction

[0010] Technical scheme of the present invention is as follows:

[0011] A preparation method for hydrophobically associated polymer inverse emulsion, comprising steps as follows:

[0012] (1) Oil phase

[0013] Dissolve emulsifiers Span80 and OP10 in white oil and stir evenly; the mass ratio of Span80 and OP10 is (20-8):1, and the amount of Span80 added is 1-8g dL relative to the total volume of the system -1 ;

[0014] (2) Water phase

[0015] Mix and dissolve hydrophobic monomers and water-soluble monomers in water at a mass ratio of 1: (10 to 500), and adjust the pH of the system by mixing the total mass of water-soluble monomers to water at a mass ratio of 1:5 to 1.5:1 value to 7~11, add cyclodextrin and reducing agent tetramethylethylenediamine (TMEDA), stir evenly, the mass ratio of cyclodextrin and hydrophobic monomer is (0.3~10):1; relative to the total volume of the system , the total amount of tetramethylethylenediamine added is 2.5~5.5mmol·L -1 ;

[0016] (3)...

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Abstract

The invention relates to a preparation method of hydrophobically associating polymer inverse emulsion and belongs to the technical field of water-soluble polymer synthesis. The preparation method comprises the following steps: changing the dissolution or interfacial property of a hydrophobic monomer by virtue of inclusion interaction cyclodextrin, and on this basis, copolymerizing the hydrophobic monomer with water-soluble monomers of acrylamide, sodium acrylate, 2-acrylamido-2-sodium methylallyl sulfonate and the like in inverse emulsion to obtain a hydrophobically associating polymer inverse emulsion product by taking potassium persulphate-tetramethylethylenediamine as a redox initiator system. The preparation method is cheap and easily-available in raw material and simple in process and after treatment; and meanwhile, the product is good in water-solubility, can be dissolved quickly, and has significant thickening property, shearing resistance and temperature and salt resistance, so that the product has an extensive application prospect in the fields of oil field, daily chemical, water treatment and the like.

Description

technical field [0001] The invention relates to a method for preparing a hydrophobic association polymer inverse emulsion, belonging to the technical field of water-soluble polymer synthesis. Background technique [0002] In recent years, the difficulty of petroleum development has been increasing. With the increase of reservoir temperature and the increase of salinity of formation water, the viscosity of polyacrylamide polymer aqueous solution has dropped significantly, which cannot meet the requirements of increasing injection under high temperature and high salinity conditions. fluid viscosity requirements. Therefore, it is necessary to develop temperature-resistant and salt-resistant polymers. Hydrophobically associated water-soluble polymers refer to a new type of functional water-soluble polymers formed by introducing a very small amount of hydrophobic units into the hydrophilic main chain of conventional water-soluble polymers. In aqueous solution, the hydrophobic g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/56C08F220/06C08F226/02C08F220/58C08F220/18C08F2/32C08F4/40
CPCC08F2/32C08F4/40C08F220/56C08F220/58C08F220/585C08F220/06C08F220/1818C08F226/02
Inventor 曹杰孟令伟杨航郑爽江俊黄维安李涵硕黎宁
Owner 陕西亘合石油科技有限公司
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