Corrosion-inhibiting foam drainage agent for oil and gas wells and preparation method thereof

A foam drainage agent, technology for oil and gas wells, applied in chemical instruments and methods, earthwork drilling, wellbore/well components, etc. The effect of production and excellent anticorrosion, excellent corrosion inhibition performance and excellent foam discharge performance

Active Publication Date: 2015-09-23
成都华阳兴华化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a corrosion-inhibiting foam drainage agent for oil and gas wells, which solves the problem that existing single corrosion inhibitors or foaming agents have high operating costs and cannot be effectively used in conjunction

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Corrosion-inhibiting foam drainage agent for oil and gas wells, composed of the following components in weight percentage: 40% oleic acid-based imidazoline quaternary ammonium salt, 5% dodecyl dimethyl benzyl ammonium chloride, dodecyl dimethyl Base betaine 25%, alkylphenol polyoxyethylene ether 10%, water 20%; The preparation method of described corrosion-inhibiting foam drainage agent is as follows:

[0027] (1) Weigh oleic acid-based imidazoline quaternary ammonium salt, dodecyl dimethyl benzyl ammonium chloride, dodecyl dimethyl betaine, alkylphenol polyoxyethylene ether and water according to the above weight percentage .

[0028] (2) Add water into the reaction kettle to keep the temperature at 60°C, then add dodecyldimethyl betaine under stirring, and then keep the temperature at 60°C after mixing;

[0029] (3) Add oleic acid-based imidazoline quaternary ammonium salt and dodecyl dimethyl benzyl ammonium chloride to the reactor in a stirring state, and react at ...

Embodiment 2

[0032] Corrosion-inhibiting foam drainage agent for oil and gas wells, composed of the following components in weight percentage: 35% oleic acid-based imidazoline quaternary ammonium salt, 10% dodecyl dimethyl benzyl ammonium chloride, dodecyl dimethyl Base betaine 20%, alkylphenol polyoxyethylene ether 10%, water 25%; The preparation method of described corrosion-inhibiting foam drainage agent is as follows:

[0033] (1) Weigh oleic acid-based imidazoline quaternary ammonium salt, dodecyl dimethyl benzyl ammonium chloride, dodecyl dimethyl betaine, alkylphenol polyoxyethylene ether and water according to the above weight percentage ;

[0034] (2) Add water into the reaction kettle to keep the temperature at 60°C, then add dodecyldimethyl betaine under stirring, and then keep the temperature at 60°C after mixing;

[0035] (3) Add oleic acid-based imidazoline quaternary ammonium salt and dodecyl dimethyl benzyl ammonium chloride to the reactor in a stirring state, and react at...

Embodiment 3

[0038] Corrosion-inhibiting foam drainage agent for oil and gas wells, composed of the following components in weight percentage: 20% oleic acid-based imidazoline quaternary ammonium salt, 10% dodecyl dimethyl benzyl ammonium chloride, dodecyl dimethyl Base betaine 30%, alkylphenol polyoxyethylene ether 10%, water 30%; The preparation method of described corrosion-inhibiting foam drainage agent is as follows:

[0039] (1) Weigh oleic acid-based imidazoline quaternary ammonium salt, dodecyl dimethyl benzyl ammonium chloride, dodecyl dimethyl betaine, alkylphenol polyoxyethylene ether and water according to the above weight percentage ;

[0040] (2) Add water into the reaction kettle to keep the temperature at 60°C, then add dodecyldimethyl betaine under stirring, and then keep the temperature at 60°C after mixing;

[0041] (3) Add oleic acid-based imidazoline quaternary ammonium salt and dodecyl dimethyl benzyl ammonium chloride to the reactor in a stirring state, and react at...

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PUM

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Abstract

The invention discloses a corrosion inhibition foam water discharging agent for an oil-gas well and a preparation method of the corrosion inhibition foam water discharging agent, solving the problem that the traditional single corrosion inhibitor or foaming agent is high in operating cost and can not be effectively synergically used. The corrosion inhibition foam water discharging agent comprises the following components in percentage by weight: 20%-40% of oleic acid based imidazoline quaternary ammonium salt, 1%-10% of dodecyl dimethyl benzyl ammonium chloride, 10%-30% of dodecyl dimethyl betaine, 5%-10% of alkylphenol polyoxyethylene and 10%-30% of water. The corrosion inhibition foam water discharging agent prepared through a formula has the advantages of excellent foam discharge property and excellent corrosion inhibition property.

Description

technical field [0001] The invention specifically relates to a corrosion-inhibiting foam drainage agent for oil and gas wells and a preparation method thereof. Background technique [0002] During the production process of natural gas wells, the water flow will enter the gas well with the air flow. When the air flow size cannot make the water flow out of the well, it will cause fluid accumulation, which will lead to production reduction or even drowning. In order to solve the problem of fluid accumulation, the method of adding foam drainage agent downhole is mainly used for fluid drainage at present. After the foam drainage agent is mixed with fluid accumulation, a large amount of foam will be generated under the agitation of natural gas flow, and the foam will bring fluid accumulation out of the well, reducing the The impact of effusion to achieve the purpose of stabilizing or increasing natural gas production. [0003] Most of the wellbore and surface processes of natural...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/54C09K8/584
CPCC09K8/54C09K8/584
Inventor 曹焕尧郭柏序郭四九
Owner 成都华阳兴华化工有限公司
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