Polymer with surface activity function and preparation method and application thereof

A surface active, polymer technology, applied in the polymer field, to solve the problem of poor temperature resistance and salt resistance, good resistance to cationic precipitation, and improve oil recovery.

Inactive Publication Date: 2017-03-08
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome the shortcomings of current polymers used in high, medium and low permeability reservoirs that cannot have good surface activity, thickening water medium ability and temperature resistance and salt resistance ability, and provide a kind of polymer with good surface activity. Polymer with surface active function, thickening water medium ability and temperature resistance and salt resistance ability, preparation method and application of the polymer

Method used

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  • Polymer with surface activity function and preparation method and application thereof
  • Polymer with surface activity function and preparation method and application thereof
  • Polymer with surface activity function and preparation method and application thereof

Examples

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preparation example Construction

[0041] In a second aspect, the present invention provides a method for preparing a polymer with surface-active functions, the method comprising: in the presence of an initiator and water as a solvent, monomer D, monomer E and monomer F are Solution polymerization, wherein, the monomer D is a monomer having a structure shown in formula (4), the monomer E is a monomer having a structure shown in formula (5), and the monomer F is a monomer having a structure shown in formula (5) (6) The monomer of the shown structure, wherein, the amount of monomer D, monomer E and monomer F makes the content of structural unit A in the prepared polymer be 45-89% by weight, and the content of structural unit B is The content is 10-40% by weight, the content of structural unit C is 1-15% by weight, and the viscosity-average molecular weight of the prepared polymer is 5 million-20 million; the structural unit A has the formula (1) The structural unit of structure, described structural unit B is the...

Embodiment 1

[0078] This example is used to illustrate the polymer with surface active function of the present invention and its preparation method.

[0079] Adopt aqueous solution polymerization method, in the adiabatic polymerization reactor that has surface thermocouple, add 0.375g as the structure monomer MAS-1 shown in formula (14) (Dandong Jinhai Fine Chemical Co., Ltd.) as water-soluble surface active monomer, 33.375g Acrylamide, 3.75g of 2-acrylamido-2-methylpropanesulfonic acid and distilled water, based on the total content of monomers and distilled water, the total content of monomers is 15% by weight, fully stirred into the polymerization reaction bottle The solution turned into a transparent solution. Then add 50 mg of auxiliary urea, 75 mg of disodium edetate, 1 mL of ammonia water and 10 mg of isopropanol, and at the same time adjust the pH value of the system to 6 with sodium hydroxide, and feed high-purity nitrogen with a volume concentration of 99.99% for 30 minutes. Oxy...

Embodiment 2

[0083]This example is used to illustrate the polymer with surface active function of the present invention and its preparation method.

[0084] Adopt the aqueous solution polymerization method, in the adiabatic polymerization reactor that has surface thermocouple, add 5g such as structural monomer MAS-1 (Dandong Jinhai Fine Chemical Co., Ltd.) shown in formula (14) as water-soluble surface active monomer, 25g propylene Amide, 20 g of 2-acrylamido-2-methylpropanesulfonic acid and distilled water, based on the total content of monomers and distilled water, the total content of monomers is 20% by weight, fully stirred into the solution in the polymerization reaction bottle turned into a clear solution. Then add 50 mg of auxiliary agent urea, 75 mg of disodium edetate, and 1 mL of ammonia water, and at the same time adjust the pH value of the system to 7 with sodium hydroxide, and pass high-purity nitrogen gas with a volume concentration of 99.99% for 30 minutes to remove the nitr...

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Abstract

The invention relates to the field of polymers, and discloses a polymer with surface activity function and a preparation method and application thereof. The polymer comprises structural unit A, structural unit B and structural unit C, wherein the structural unit A is a structural unit with structure shown in formula (1); the structural unit B is a structural unit with structure shown in formula (2); and the structural unit C is a structural unit with structure shown in formula (3). The polymer with surface activity function has good surface activity, aqueous medium thickening ability, and heat resistance and salt tolerance.

Description

technical field [0001] The present invention relates to the field of polymers, in particular to a polymer with surface active function, a method for preparing a polymer with surface active function and a polymer with surface active function prepared by the method, a Application of polymer with surface active function as polymer oil displacement agent. Background technique [0002] In order to solve the problem of poor temperature resistance and salt resistance of polymers used for oil displacement, researchers proposed a method of introducing functional monomers into the molecules and increasing the molecular weight of polymers to improve the apparent viscosity and temperature resistance of polymer aqueous solutions. Salt performance, thus developed hydrophobic association polymers, comb polymers, temperature-resistant and salt-resistant polymers, etc., but these polymers do not have surface activity and oil washing ability. [0003] In the tertiary oil recovery technology,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/56C08F220/58C08F220/38C09K8/588
Inventor 王晓春赵方园于芳杨捷
Owner CHINA PETROLEUM & CHEM CORP
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