Foam scrubbing agent as well as preparation method and application thereof

A technology of foaming agent and active agent, which is applied in chemical instruments and methods, earth drilling and mining fluids, etc. It can solve the problems of poor foam stability, limited improvement range, and difficult secondary foaming, so as to improve the diffusion effect, The effect of wide source of raw materials and low price

Active Publication Date: 2021-10-19
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the existing foaming agent has low foaming power, poor foam stability, and is easily affected by acid gas, condensate oil, etc., making secondary foaming difficult, and cannot be well applied to horizontal liquid accumulation wells
At present, there is no research report on high-efficiency foaming agent specifically for liquid drainage and gas recovery in horizontal wells, but studies have shown that increasing the amount of foaming agent to overcome the influence of the deflection section on the foaming effect can improve the performance of the horizontal well deviated section. Liquid carrying effect, but the improvement is limited and the cost increases significantly

Method used

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  • Foam scrubbing agent as well as preparation method and application thereof
  • Foam scrubbing agent as well as preparation method and application thereof
  • Foam scrubbing agent as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Octaramidopropyl Betaine: 10%, Myristyl Dimethyl Betaine: 8%, Alkyl Polyglycoside APG-0810: 5%, Sodium Dodecylbenzene Sulfonate: 0.1%, Fatty Alcohol Sodium polyoxyethylene ether sulfate: 0.1%, ammonium chloride: 5%, sodium nitrite: 6.5%, make up 100% with water. Its preparation method is as follows:

[0038] A. According to the formula ratio, slowly add octadecylamidopropyl betaine and myristyl dimethyl betaine into the stainless steel reaction kettle, and stir at a low speed at 20°C for 10 minutes;

[0039] B. Slowly add alkyl polyglycoside APG-0810 to the above mixed solution, then add deionized water, heat the mixed solution to 40°C, and continue to stir at a low speed for 20 minutes;

[0040] C. Slowly add sodium dodecylbenzenesulfonate to the above mixed solution, and continue to stir the mixed solution at a low speed for 20 minutes at 40°C;

[0041] D. Heat the above solution to 60°C, add fatty alcohol polyoxyethylene ether sodium sulfate at one time, and stir a...

Embodiment 2

[0044]Octaramidopropyl Betaine: 13%, Myristyl Dimethyl Betaine: 10%, Alkyl Polyglycoside APG-0810: 6%, Sodium Dodecylbenzene Sulfonate: 0.6%, Fatty Alcohol Sodium polyoxyethylene ether sulfate: 0.2%, ammonium chloride: 6%, sodium nitrite: 7.3%, make up 100% with water. Its preparation method is as follows:

[0045] A. According to the formula ratio, slowly add octadecylamidopropyl betaine and myristyl dimethyl betaine into the stainless steel reaction kettle, and stir at a low speed of 25°C for 12 minutes;

[0046] B. Slowly add alkyl polyglycoside APG-0810 to the above mixed solution, then add deionized water, heat the mixed solution to 42°C, and continue to stir at a low speed for 22 minutes;

[0047] C. Slowly add sodium dodecylbenzenesulfonate to the above mixed solution, and continue to stir the mixed solution at a low speed for 22 minutes at 42°C;

[0048] D. Raise the temperature of the above solution to 62°C, add fatty alcohol polyoxyethylene ether sodium sulfate at ...

Embodiment 3

[0051] Octaramidopropyl Betaine: 15%, Myristyl Dimethyl Betaine: 13%, Alkyl Polyglycoside APG-0810: 7.5%, Sodium Dodecylbenzene Sulfonate: 0.9%, Fatty Alcohol Sodium polyoxyethylene ether sulfate: 0.25%, ammonium chloride: 6.5%, sodium nitrite: 8.1%, make up 100% with water. Its preparation method is as follows:

[0052] A. Slowly add octadecylamidopropyl betaine and myristyl dimethyl betaine into the stainless steel reaction kettle according to the formula ratio, and stir at a low speed of 30°C for 15 minutes;

[0053] B. Slowly add alkyl polyglycoside APG-0810 to the above mixed solution, then add deionized water, heat the mixed solution to 45°C, and continue to stir at a low speed for 25 minutes;

[0054] C. Slowly add sodium dodecylbenzenesulfonate to the above mixed solution, and continue to stir the mixed solution at a low speed for 25 minutes at 45°C;

[0055] D. Heat the above solution to 65°C, add fatty alcohol polyoxyethylene ether sodium sulfate at one time, and s...

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Abstract

The invention provides a foam scrubbing agent as well as a preparation method and application thereof. The foam scrubbing agent comprises a zwitterionic surfactant, a nonionic surfactant, an anionic surfactant, ammonium chloride, sodium nitrite and water. The foam scrubbing agent can be particularly applied to liquid drainage and gas production of a water outlet gas well.

Description

technical field [0001] The invention relates to a foam discharge agent, in particular to a foam discharge agent used in horizontal well drainage and gas recovery. Background technique [0002] Due to the reduction of wellhead pressure and the attenuation of production capacity of low-pressure and low-production gas wells, some gas wells have been unable to reach the critical flow rate of self-carrying liquid. Relying on their own energy is not enough to effectively lift the liquid accumulation to the surface. Liquid accumulation in water-producing gas wells is very harmful. It will increase the back pressure of gas wells and limit the production capacity of gas wells, and a small amount of liquid accumulation will cause the hydraulic pressure of these gas wells to stop blowing. At present, the relatively mature single liquid drainage gas recovery technology mainly includes optimized pipe string, foam drainage, gas lift, plunger lift, mechanical pumping, electric submersible ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/584E21B43/22
CPCC09K8/584E21B43/16
Inventor 武俊文张汝生王海波
Owner CHINA PETROLEUM & CHEM CORP
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