Inhibitor for controlling electric dipole corrosion

Abstract

An inhibitor which can control the corrosion of the galvanic couple is made up of the aliphatic polyoxyethylene ether 1-70%; the propiolic alcohol 0.01-30%; the water 0-70%; diaminoethane 0-30%; the ethanol 0-70%. It has the good effect of controlling the corrosion of the galvanic couple.

Description

technical field [0001] The invention relates to a corrosion inhibitor for controlling galvanic corrosion. Background technique [0002] In the development and production of oil and natural gas, the casing design of oil and gas fields usually uses two or more metal materials to reduce production costs. However, when the two metal materials contact each other in the corrosive medium completion fluid with high salt content, a potential difference will be generated, resulting in a galvanic corrosion effect, causing serious corrosion of the casing, resulting in economic losses and safety accidents. There are many ways to prevent and control corrosion. For well completion operations, adding corrosion inhibitors to completion fluids is a simple, effective and practical method. However, at present, there is no special corrosion inhibitor for controlling galvanic corrosion at home and abroad, but other corrosion inhibitors are used instead, so the effect of controlling galvanic corr...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the unsatisfactory shortcomings of existing corrosion inhibitors in controlling galvanic corrosion, the present invention provides a corrosion inhibitor with a good effect in controlling galvanic corrosion

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