Polymer surfactant with efficient carbon dioxide responsiveness and preparation method

A surfactant, carbon dioxide technology, applied in the direction of chemical instruments and methods, drilling composition, etc., can solve the problems of separation difficulty, limitation, large amount, etc.

Active Publication Date: 2017-05-10
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At this time, the surfactant is used as a solubilizer, and the hydrophobic organic matter is easy to dissolve in the surfactant solution, but it becomes very difficult to separate the two, which makes the surfactant unabl

Method used

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  • Polymer surfactant with efficient carbon dioxide responsiveness and preparation method
  • Polymer surfactant with efficient carbon dioxide responsiveness and preparation method
  • Polymer surfactant with efficient carbon dioxide responsiveness and preparation method

Examples

Experimental program
Comparison scheme
Effect test

example 3

[0034] Instance 3 in C 3 D. 6 in O 1 HNMR

[0035] Gel Permeation Chromatography

[0036] Instrument model: DAWN HELEOSⅡ18-angle laser light scattering instrument (Wyatt, USA)

[0037] Chromatographic conditions: chromatographic column: Shodex OHpak SB-804HQ, SB-806HQ; mobile phase: 0.1mol / L sodium nitrate solution: flow rate: 1ml / min; column temperature: 25°C.

[0038] Figure 5 It is the GPC spectrum of Example 3 of the present invention, the molecular weight distribution is 3500-4500, n=12-20, and the molecular weight distribution is relatively narrow.

[0039]

[0040] Figure 6 It is the water-oil interfacial tension spectrum at different concentrations of Example 3 of the present invention. After fitting, the CMC concentration of the example 3 sample is 0.02%, which shows that this type of surfactant can form micelles at a lower concentration, and has a low dosage. advantage.

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Abstract

The invention provides a polymer surfactant with efficient carbon dioxide responsiveness and a preparation method, and belongs to the field of preparation of surfactants. The preparation method comprises the steps as follows: DMAEMA (2-(dimethylamino)ethyl methacrylate) and sodium ethanesulfonate are mixed in water, APS (ammonium persulphate) is added, the mixture reacts for 4 hours at 80 DEG C, a reaction solution is extracted, subjected to impurity removal and vacuum solvent removal and dried at 50 DEG C, and the polymer surfactant with efficient carbon dioxide responsiveness is obtained. The polymer surfactant and the preparation method have the advantages that the preparation method is simple, the cost is low, a material has good stability, the prepared polymer surfactant has excellent carbon dioxide responsiveness, and the polymer surfactant can be applied to development of low-quality petroleum resources such as heavy oil and the like.

Description

technical field [0001] The invention designs a class of high-molecular surface active agents with high-efficiency carbon dioxide responsiveness and a synthesis method thereof. Background technique [0002] After the oil field enters the high water cut period, the remaining oil is trapped in the pores of the reservoir rocks in a discontinuous oil film. The two main forces acting on the oil droplet are viscous force and capillary force. The agent system can reduce the interfacial tension between oil and water, so that the interfacial tension between oil and water in the reservoir can be reduced from 20-30mN / m to a low or ultra-low value (10 3 ~10 4 mN / m), it can reduce the resistance caused by the deformation of the oil droplets when the remaining oil is moved, thereby greatly improving the oil displacement efficiency. [0003] At this time, the surfactant is used as a solubilizer, and the hydrophobic organic matter is easy to dissolve in the surfactant solution, but it beco...

Claims

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Application Information

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IPC IPC(8): C09K8/584C08F228/02C08F220/34
CPCC08F220/34C08F228/02C09K8/584
Inventor 贾胜见徐盛明徐政和
Owner TSINGHUA UNIV
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