A water-based foam stabilizer, preparation method and water-based foam system with ultra-high stability

A foam stabilizer, water-based technology, applied in chemical instruments and methods, solid separation, drilling compositions, etc., can solve the problem that the stability of water-based foam is not high enough to affect the technical application effect, and the stability of water-based foam cannot be solved. Well meet the requirements and other issues, to achieve the effect of high foam stability, low gas permeability and excellent foam stability

Active Publication Date: 2016-04-06
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, surfactants are usually used as foaming agents, and the stability of the formed water-based foams often cannot meet the requirements well, especially when carbon dioxide is used as the foaming gas, the stability of surfactant-stabilized water-based foams Not high enough, seriously affecting the application effect of related technologies

Method used

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  • A water-based foam stabilizer, preparation method and water-based foam system with ultra-high stability
  • A water-based foam stabilizer, preparation method and water-based foam system with ultra-high stability
  • A water-based foam stabilizer, preparation method and water-based foam system with ultra-high stability

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1: hydrophobically modified polyacrylamide

[0036] 1. Preparation of hydrophobically modified polyacrylamide

[0037] Dissolve 10g of acrylamide and 0.5g of EDTA in deionized water, then add 3g of sodium lauryl sulfate and 0.2g of acrylate (the number of carbons in the alkyl chain is 16). The reactor was placed in a constant temperature water bath, and N 2 Add the initiator after 30 minutes, keep the temperature at 50°C and stir for 20 hours. Hydrophobically modified polyacrylamide was obtained, and the molecular weight of the obtained product was about 150,000.

[0038] x / (x+y)=90%, y / (x+y)=10%, molar ratio.

[0039] 2. Preparation of foam stabilizer

[0040] In deionized water, add hydrophobically modified polyacrylamide in proportion, stir and mix evenly, prepare a solution with a concentration of 0.1wt%, keep the solution temperature at 30°C and stir for half an hour. A foam stabilizer solution is obtained.

[0041] 3. Investigation on foam stabi...

Embodiment 2

[0045] Embodiment 2: hydrophobically modified sodium polystyrene sulfonate

[0046] 1. Preparation of hydrophobically modified sodium polystyrene sulfonate

[0047] Dissolve 12g of sodium styrene sulfonate and 0.5g of EDTA in deionized water, then add 3.5g of sodium dodecylbenzenesulfonate and 0.25g of acrylate (the number of carbons in the alkyl chain is 18). The reactor was placed in a constant temperature water bath, and N 2 Add the initiator after 30 minutes, keep the temperature at 50°C and stir for 20 hours. Hydrophobically modified sodium polystyrene sulfonate was obtained, and the molecular weight of the obtained product was about 180,000.

[0048] x / (x+y)=85%, y / (x+y)=15%, molar ratio.

[0049] 2. Preparation of foam stabilizer

[0050] In deionized water, add hydrophobically modified sodium polystyrene sulfonate in proportion, stir and mix evenly, and prepare a solution with a concentration of 0.2wt%, and keep the temperature of the solution at 30°C for half an...

Embodiment 3

[0055] Embodiment 3: hydrophobically modified polyvinyl alcohol

[0056] 1. Preparation of hydrophobically modified polyvinyl alcohol

[0057] Dissolve 8g of vinyl alcohol and 0.5g of EDTA in deionized water, then add 2g of sodium dodecylsulfonate and 0.15g of acrylate (the number of carbons in the alkyl chain is 8). The reactor was placed in a constant temperature water bath, and N 2 Add the initiator after 30 minutes, keep the temperature at 50°C and stir for 20 hours. Hydrophobically modified polyvinyl alcohol is obtained, and the molecular weight of the product is about 80,000.

[0058] x / (x+y)=80%, y / (x+y)=20%, molar ratio.

[0059] 2. Preparation of foam stabilizer

[0060] Add hydrophobically modified polyethylene glycol to the simulated formation water (total salinity of 7000ppm) in the Shengli Gudong oil production area, and prepare a 0.3wt% solution at 60°C. Stir for 30min. As a foam stabilizer solution.

[0061] 3. Investigation on foam stabilization effect...

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Abstract

The invention relates to a water-based foam stabilizer, a preparation method and a water-based foam system with super high stability. The water-based foam stabilizer is a water-soluble macromolecular surfactant A dissolved in water to form a transparent solution with a mass concentration of 0.1-1 wt%. The invention also provides a preparation method and application of the water-based foam stabilizer. The surfactant A can be adsorbed on the gas-liquid interface to stabilize the foam, the gas-liquid interface has a high coverage, and the formed foam liquid film has a strong liquid holding capacity and high foam stability. It is used for nitrogen, carbon dioxide, oxygen, air, flue gas In the water-based foam system in the gas phase, such as decarbonized flue gas, etc., it can maintain excellent foam stability even under harsh conditions such as carbon dioxide as the foaming gas or the presence of crude oil.

Description

technical field [0001] The invention relates to a water-based foam stabilizer, a preparation method and a water-based foam system with super high stability, and belongs to the technical fields of oilfield chemistry, daily chemistry, mineral processing and the like. Background of the invention [0002] Foam is a polydisperse system of a mixture of gas and liquid, where the liquid is the continuous phase and the gas is the dispersed phase. Water-based foam is widely used in our daily life, such as shampoo, toothpaste, facial cleanser, shower gel and other daily chemical products, as well as in food and beverages such as beer, coffee, and ice cream. The presence of foam enhances the quality of the product, improving the mouthfeel, skin feel or aesthetics of the product. Foam is also used for fire suppression, which creates a blanket effect that reduces the production of combustible gases, helps to trap oxygen, and cools fuel surfaces. [0003] In the industrial field, the dif...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01F17/22B01F17/34B01F17/12B01F17/38C09K8/594C08F220/56C08F220/18C08F212/14C08F216/06C08F220/06B03D1/02B03D1/016C09K23/22C09K23/12C09K23/34C09K23/38
Inventor 李英吕韦钦李德春
Owner SHANDONG UNIV
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