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A kind of acidifying corrosion inhibitor and preparation method thereof

An acidification corrosion inhibitor and corrosion inhibitor technology, applied in the direction of organic chemistry, can solve the problems of insufficient stability and firmness of metal surface adsorption, poor long-term slow-release effect, etc., to achieve easy on-site operation and configuration, non-volatile, wide application range wide effect

Active Publication Date: 2019-10-18
西安超新科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as a corrosion inhibitor, propynyl alcohol has the problems that the adsorption on the metal surface is not stable enough and the long-term slow-release effect is not good.

Method used

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  • A kind of acidifying corrosion inhibitor and preparation method thereof
  • A kind of acidifying corrosion inhibitor and preparation method thereof
  • A kind of acidifying corrosion inhibitor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 56g of 2-propyn-1-ol and 200g of pyridine derivative of orotic acid were heated to 110°C, stirred and refluxed, and reacted for 10 hours to obtain corrosion inhibitor A.

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Abstract

The invention discloses an acidizing corrosion inhibitor. The acidizing corrosion inhibitor comprises a propargyl alcohol derivative and an orotic acid derivative in a molar ratio of 5-0.2:1. The acidizing corrosion inhibitor has an efficient sustained-release effect which is better than the sustained-release effect of independently used propargyl alcohol or a compound reagent of propargyl alcohol and other corrosion inhibitors, and especially the long-acting sustained-release effect of the acidizing corrosion inhibitor is strengthened remarkably. The corrosion inhibitor further has good compatibility, can be matched with various acidizing reagents for use, is more remarkable in synergic effect; moreover, a special solvent does not need to be added into a solution for dissolving; and the corrosion inhibitor product is high in effective component content and is very small in site usage amount.

Description

technical field [0001] The invention relates to a propynyl alcohol acidification corrosion inhibitor and a preparation method thereof, and belongs to the technical field of corrosion inhibitors in the acidification production increase process of petroleum exploitation. Background technique [0002] Acidizing refers to a technology that injects a large amount of high-concentration acid liquid into the formation to compress and acidify limestone oil and gas wells to restore or increase the permeability of the formation, and realize the increase of production of oil and gas wells and the increase of injection of water wells. However, during the acidizing process, the injection of high-concentration and large amounts of acid will cause the pipelines, storage tanks and process equipment in the oil-water well to be corroded to varying degrees. In order to prevent or reduce the corrosion of equipment and downhole pipelines by acid liquid, corrosion inhibitors are usually added to a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23F11/04C07D401/06
Inventor 段士峰段越杨海燕
Owner 西安超新科技发展有限公司
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