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Corrosion inhibition foam water discharging agent for oil-gas well and preparation method of corrosion inhibition foam water discharging agent

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

Active Publication Date: 2014-03-05
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, consisting of the following components by weight: 40% oleic imidazoline quaternary ammonium salt, 5% dodecyldimethylbenzyl ammonium chloride, dodecyldimethyl ammonium chloride base betaine 25%, alkylphenol polyoxyethylene ether 10%, water 20%; the preparation method of the corrosion-inhibiting foam drainage agent is as follows:

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

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

[0029] (3) Add oleic acid imidazoline quaternary ammonium salt and dodecyl dimethyl benzyl ammonium chloride to the reaction kettle in turn under stirring, and react at a constant temperature of 6...

Embodiment 2

[0032] Corrosion-inhibiting foam drainage agent for oil and gas wells, consisting of the following components by weight: oleic imidazoline quaternary ammonium salt 35%, dodecyldimethylbenzylammonium chloride 10%, dodecyldimethyl ammonium chloride Base betaine 20%, alkylphenol polyoxyethylene ether 10%, water 25%; the preparation method of the corrosion-inhibiting foam drainage agent is as follows:

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

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

[0035] (3) Add oleic acid imidazoline quaternary ammonium salt and dodecyl dimethyl benzyl ammonium chloride to the reaction kettle in turn under stirring, and react at a constant temperature of 6...

Embodiment 3

[0038] Corrosion-inhibiting foam drainage agent for oil and gas wells, consisting of the following components by weight: 20% oleic imidazoline quaternary ammonium salt, 10% dodecyldimethylbenzyl ammonium chloride, dodecyldimethyl ammonium chloride base betaine 30%, alkylphenol polyoxyethylene ether 10%, water 30%; the preparation method of the corrosion-inhibiting foam drainage agent is as follows:

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

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

[0041] (3) Add oleic acid imidazoline quaternary ammonium salt and dodecyl dimethyl benzyl ammonium chloride to the reaction kettle in turn under stirring, and react at a constant temperature of ...

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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 gas flow. When the size of the gas flow cannot make the water flow out of the well, it will cause liquid accumulation, which will lead to production reduction or even drowning. In order to solve the problem of liquid accumulation, the method of adding foam discharge agent to the downhole is mainly used for liquid discharge. After the foam discharge agent is mixed with the liquid accumulation, a large amount of foam is generated under the agitation of the natural gas flow. The effect of liquid accumulation to achieve the purpose of stabilizing or increasing natural gas production. [0003] Most of the natural gas well body and surface flow are steel structures, which are easily corroded or ...

Claims

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Application Information

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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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