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Oil-resistant salt-resistant foaming agent

A technology of foaming agent and active agent, applied in the field of foaming agent, can solve the problems of easy defoaming, affecting the water-carrying function of the foaming agent, and reducing foam stability, and achieves the effect of high salt resistance

Pending Publication Date: 2021-03-05
成都欣明化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in some gas wells, in addition to formation water and natural gas, there will be some condensate oil in the production process. Due to the low surface tension of condensate oil, it is easy to defoam, which will weaken the water-carrying function of the foaming agent.
At the same time, the formation water contains a large amount of inorganic salts, and its water salinity can reach 100,000 ppm or above, which will also reduce the stability of the foam produced by the foaming agent, thereby affecting the water-carrying function of the foaming agent

Method used

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  • Oil-resistant salt-resistant foaming agent

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Comparison scheme
Effect test

Embodiment 1

[0015] The anti-oil and anti-salt foaming agent of the present invention comprises the following components in weight percentage: 15% of nonionic surfactant, 5% of amphoteric surfactant, and 0.5% of fluorine-containing surfactant.

Embodiment 2

[0017] The anti-oil and anti-salt foaming agent of the present invention comprises the following components in weight percentage: 20% of nonionic surfactant, 10% of amphoteric surfactant, and 0.5% of fluorine-containing surfactant.

Embodiment 3

[0019] The anti-oil and anti-salt foaming agent of the present invention comprises the following components in weight percentage: 20% of nonionic surfactant, 10% of amphoteric surfactant, and 1% of fluorine-containing surfactant.

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Abstract

The invention discloses an oil-resistant salt-resistant foaming agent. The oil-resistant salt-resistant foaming agent comprises the following components in percentage by weight: 15-25% of a nonionic surfactant, 5-15% of an ampholytic surfactant and 0.5-2% of a fluorine-containing surfactant. Compared with the prior art, the oil-resistant salt-resistant foaming agent of the invention has the following advantages: 1, a salt resistance degree is high, and the oil-resistant salt-resistant foaming agent can still resist salt and water when the mineralization degree of water is 200,000-300,000 ppm;2, the oil-resistant salt-resistant foaming agent has oil resistance, and when the content of condensate oil is about 30%, the oil-resistant salt-resistant foaming agent can bring out liquid on the basis of realization of oil resistance.

Description

technical field [0001] The invention relates to an oil-resistant and salt-resistant foaming agent, belonging to the technical field of foaming agents. Background technique [0002] Foaming agents for gas wells are mainly composed of several surfactants, and their main function is to bring out the fluid accumulated in the wellbore due to the accumulation of groundwater, so as to restore or even increase the production of gas wells. [0003] However, in some gas wells, in addition to formation water and natural gas, there will be some condensate oil during the production process. Due to the low surface tension of condensate oil, it is easy to defoam, which will weaken the water-carrying function of the foaming agent. At the same time, the formation water contains a large amount of inorganic salts, and its water salinity can reach 100,000 ppm or above, which will also reduce the stability of the foam produced by the foaming agent, thereby affecting the water-carrying function o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/584C09K8/60
CPCC09K8/584C09K8/604
Inventor 韦伟张焘王莉萍林志明
Owner 成都欣明化工有限公司
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