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A kind of preparation method and application of double braid polymer surfactant containing aromatic group

A technology of surfactant and aromatic polyoxyethylene ether, which is applied in the direction of drilling compositions, chemical instruments and methods, etc., can solve the problems that it is difficult to form, it is difficult to achieve the purpose of reducing viscosity, and the viscosity of heavy oil cannot be reduced. , to achieve the effects of convenient storage, improved oil-water mobility ratio, and high yield

Active Publication Date: 2022-02-01
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The main reason is that for polymer flooding, the polymer only increases the viscosity of the displacement fluid, but cannot reduce the viscosity of heavy oil. Therefore, the range of reducing the mobility ratio of heavy oil / water is small, and the range of expanding the swept volume is also small; for low molecular weight For emulsified viscosity reducer flooding, under strong stirring (shearing) conditions indoors, oil-in-water emulsions can be formed to achieve the purpose of viscosity reduction, but under low-shear formation conditions, it is difficult to form oil-in-water emulsions and To achieve the purpose of reducing viscosity

Method used

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  • A kind of preparation method and application of double braid polymer surfactant containing aromatic group
  • A kind of preparation method and application of double braid polymer surfactant containing aromatic group
  • A kind of preparation method and application of double braid polymer surfactant containing aromatic group

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] (1) Add nonylphenol polyoxyethylene ether (n=10) (10.0000g, 15.131mmol ), maleic anhydride (0.3810g, 3.886mmol), p-toluenesulfonic acid (0.1556g, 0.902mmol) and toluene (50mL), stirring and dissolving, heating to reflux, maintaining the temperature of the reaction solution at 115-120°C, and continuing the reaction for 6h , to divide the generated water.

[0062] (2) After the reaction is over, the reaction solution obtained in step (1) is washed with 5wt% sodium bicarbonate aqueous solution and saturated sodium chloride aqueous solution respectively, and after concentration, 4.36 g of light yellow oily matter is obtained, which is a compound containing 10 ethyleneoxy groups. Dinonylphenol polyoxyethylene ether maleate diester (NP) of EO unit 10 MA).

[0063] The proton nuclear magnetic resonance spectrum of the yellow oil obtained in the present embodiment ( 1 HNMR, 400MHz, CDCl 3 )Such as figure 1 As shown, the chemical shift δ (ppm) is 6.70-7.3 (8H, hydrogen on t...

Embodiment 2

[0066] The preparation method is the same as in Example 1, except that: in step (1), nonylphenol polyoxyethylene ether (n=6) (10.0000g, 20.633mmol) containing 6 ethyleneoxy EO units is added, Maleic anhydride (0.9196 g, 9.378 mmol) and p-toluenesulfonic acid (0.1973 g, 1.146 mmol).

[0067] The obtained yellow oil is dinonylphenol polyoxyethylene ether maleic acid diester (NP) containing 6 ethyleneoxy EO units. 6 MA) 7.90 g.

[0068] Its proton nuclear magnetic resonance spectrum data are as follows:

[0069] 1 H NMR (400MHz, CDCl 3 ): δ (ppm) 6.70-7.3 (8H, hydrogen on the benzene ring), 6.25 (2H, hydrogen on the double bond H C=C H ),3.0-4.5(48H, for 12-OC H 2 C H 2 O-), 0.5-2.2 (38H, is alkyl hydrogen).

[0070] Through proton nuclear magnetic resonance spectrum analysis, confirm that the product that obtains is the dinonylphenol polyoxyethylene ether maleic acid diester containing 6 ethyleneoxy EO units (NP 6 MA).

Embodiment 3

[0072] The preparation method is the same as in Example 1, except that in step (1), di-tert-butylphenoxy polyoxyethylene ether (n=15) (10.0000g , 11.533mmol), maleic anhydride (0.3230g, 3.294mmol) and p-toluenesulfonic acid (0.2064g, 1.200mmol).

[0073] The obtained yellow oil is bis(di-tert-butylphenoxypolyoxyethylene ether) maleic acid diester (DPP) containing 15 ethyleneoxy EO chain members. 15 MA) 4.76g.

[0074] Its proton nuclear magnetic resonance spectrum data are as follows:

[0075] 1 H NMR (400MHz, CDCl 3 ): δ (ppm) 6.70-7.3 (8H, hydrogen on the benzene ring), 6.25 (2H, hydrogen on the double bond H C=C H ),3.0-4.5(120H, for 30-OC H 2 C H 2 O-)0.5-2.2 (36H, tert-butyl hydrogen).

[0076] Through proton nuclear magnetic resonance spectrum analysis, confirm that the product that obtains is two (di-tert-butylphenoxy polyoxyethylene ether) maleic acid diester (DPP) containing 15 ethyleneoxy EO chain members 15 MA).

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Abstract

The invention provides a preparation method and application of an aromatic group-containing double braided polymer surfactant. The surfactant has a structure shown in the following formula (I): in formula (I), x / (x+y+z)×100%=0.1%~0.5%, y / (x+y+z) ×100%=90.8%~93.3%, z / (x+y+z)×100%=6.6%~8.7%; R 1 and R 2 each independently selected from a hydrogen atom or C 1 ~C 20 straight-chain or branched-chain alkyl; n=1-30; the polymer provided by the invention has good interfacial activity, and can form a stable oil-in-water emulsion for heavy oil under low-shear conditions in the formation to achieve viscosity reduction Purpose:

Description

technical field [0001] The present invention relates to the chemical industry field, specifically, the present invention relates to a kind of double-braid type polymer surfactant and its preparation method and application, more specifically, the present invention relates to a kind of double-braid type polymer containing diaryl group Surfactant and its preparation method and application. Background technique [0002] Heavy oil development methods include thermal recovery (steam huff and puff, steam flooding, burning oil layers, SAGD) and cold recovery (water flooding). my country's water flooding heavy oil reserves account for 30.1% of the total heavy oil reserves, and the output of water flooding accounts for 30.1% of the total heavy oil reserves. The production rate is 18%. Due to the high viscosity of heavy oil and serious reservoir heterogeneity, the recovery rate of heavy oil water flooding is only 5-30% (the recovery rate of thin oil water flooding is 40%). [0003] In ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/584C08F290/06C08F220/06C08F220/58C08F4/40
CPCC09K8/584C08F290/062C08F4/40C08F220/06
Inventor 张付生孟卫东刘国良徐小芳廖龚晴
Owner PETROCHINA CO LTD
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