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Functional polymer with surface activity, preparation method therefor and application of functional polymer with surface activity

A functional polymer and surface active technology, applied in the direction of drilling compositions, chemical instruments and methods, etc., to achieve enhanced oil recovery, good cationic precipitation resistance and temperature resistance, and solve the problem of temperature resistance and resistance to high inorganic prices The effect of poor cationic performance

Active Publication Date: 2016-04-06
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 that the current polymers used in medium and low permeability reservoirs cannot have good surface activity, thickening water medium ability and temperature resistance and salt resistance, and provide a kind of polymer with good surface activity, thickening and anti-salt ability A polymer with surface active function capable of water medium and temperature resistance and salt resistance, a preparation method of the polymer with surface active function, a polymer with surface active function prepared by the method, and the polymer with surface active function Application as an oil displacing agent

Method used

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  • Functional polymer with surface activity, preparation method therefor and application of functional polymer with surface activity
  • Functional polymer with surface activity, preparation method therefor and application of functional polymer with surface activity
  • Functional polymer with surface activity, preparation method therefor and application of functional polymer with surface activity

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Effect test

Embodiment 1

[0067] Adopt aqueous solution polymerization method, in the adiabatic polymerization reactor that has surface thermocouple, add 0.25g structure monomer YD-1 (Shanghai Boyihe chemical industry) as water-soluble surface active monomer, 19.75g propylene as shown in formula (13) Amide, 5.0g of 2-acrylamido-2-methylpropanesulfonic acid and distilled water, based on the total content of monomer and distilled water, the total content of monomer is 10% by weight, fully stirred to the The solution turned into a clear solution. Then add 25 mg of auxiliary agent 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. Oxygen was removed from the polymerization flask. Then add 20 mg of ammonium persulfate and 10 mg of sodium bisulfite in sequence, continue to pass high-purity nitrogen gas for 10 minu...

Embodiment 2

[0071] Adopt aqueous solution polymerization method, in the adiabatic polymerization reactor that has surface thermocouple, add 0.1875g structure monomer YD-1 (Shanghai Boyihe chemical industry) as the water-soluble surface active monomer, 24.1875g propylene shown in formula (13) Amide, 13.125g of 2-acrylamido-2-methylpropanesulfonic acid and distilled water, based on the total content of monomer and distilled water, the total content of monomer is 15% by weight, fully stirred to the The solution turned into a clear solution. Then add 25 mg of auxiliary agent 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 7 with sodium hydroxide, and feed high-purity nitrogen with a volume concentration of 99.99% for 30 minutes. Oxygen was removed from the polymerization flask. Then add 20mg of ammonium persulfate and 10mg of sodium bisulfite successively, and continue to pass high-purity nitrogen gas ...

Embodiment 3

[0075] Adopt aqueous solution polymerization method, in the adiabatic polymerization reactor that has surface thermocouple, add 0.25g structure monomer YD-2 (Shanghai Boyihe chemical industry) as water-soluble surface active monomer, 34.75g propylene as shown in formula (14) Amide, 15 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 50mg of auxiliary agent urea, 100mg of disodium ethylenediaminetetraacetic acid, 1mL of ammonia water and 5mg of N,N-methylenebisacrylamide, and at the same time adjust the pH value of the system to 8.0 with sodium hydroxide. High-purity nitrogen for 30 minutes to remove oxygen from the polymerization flask. Then add 15mg of ammonium persulfate and 10mg of sodium bisulfite successively, and continue to pass high-pur...

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Abstract

The invention provides a functional polymer with surface activity, a preparation method therefor and application of the functional polymer with surface activity. The functional polymer with surface activity contains a structural unit A, a structural unit B and a structural unit C, wherein the structural unit A is a structural unit represented by a formula (1) shown in the description, the structural unit B is a structural unit represented by a formula (2) shown in the description, the structural unit C is a structural unit represented by a formula (3) shown in the description; and based on the weight of the polymer, the content of the structural unit A is 59-79wt%, the content of the structural unit B is 20-40wt%, the content of the structural unit C is 0.1-1wt%, and the viscosity average molecular weight of the polymer is 5,000,000 to 15,000,000. The functional polymer with surface activity has good surface activity, high apparent viscosity and good heat resistance and salt resistance; and oil displacement agents of this kind are applicable to medium- / low-permeability oil reservoirs, high-temperature oil reservoirs and high-temperature and high-salt oil reservoirs and can be used for further increasing oil recovery factor in tertiary oil recovery.

Description

technical field [0001] The present invention relates to a polymer with surface active function, a preparation method of the polymer with surface active function, a polymer with surface active function prepared by the method, and the polymer with surface active function as an oil displacement agent application. Background technique [0002] Exploration data in recent years show that medium and low permeability reservoirs have become an important field of oilfield exploration and development in my country. For example, in Jiangsu Oilfield, medium and low permeability reserves have reached 65% of the discovered reserves. Daqing Oilfield carried out polymer flooding in medium and low permeability reservoirs in the Sabei area, and achieved a good effect of increasing oil production and reducing water loss. With the improvement of the degree of exploration and the increasing demand for oil resources, no matter from the analysis of remaining oil resources or development trends, me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/56C08F220/58C08F220/36C09K8/588
Inventor 王晓春赵方园高文骥于芳杨捷
Owner CHINA PETROLEUM & CHEM CORP
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