An acid oil and gas field corrosion and scale inhibitor and a preparation method thereof
By preparing a corrosion and scale inhibitor for acidic oil and gas fields, the problem of incompatibility between corrosion inhibitors and scale inhibitors in acidic oil and gas fields was solved by utilizing the ultrasonic reaction of 2-hydroxyphosphonoacetic acid, 2-R-1-hydroxyethylimidazoline, and nano-alumina. This resulted in highly efficient corrosion and scale inhibition performance and a simplified preparation process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHINA PETROLEUM & CHEMICAL CORP
- Filing Date
- 2025-01-09
- Publication Date
- 2026-07-17
AI Technical Summary
Existing corrosion inhibitors and scale inhibitors are not ideal for corrosion and scale prevention in acidic oil and gas fields. Conventional agents are incompatible and costly. Nanomaterials have weak activity in high sulfur content and high temperature and pressure environments, making it difficult to meet the protection requirements of surface gathering and transportation systems.
Using 2-hydroxyphosphonoacetic acid, 2-R-1-hydroxyethylimidazoline and nano-alumina as raw materials, a structural compound was prepared by ultrasonic reaction. Nano-alumina was used as a medium to form chemical bonds in an acidic environment, exerting a synergistic effect and improving corrosion and scale inhibition performance.
Under acidic and high-mineralization conditions, it achieves good corrosion and scale inhibition effects, reduces production costs and simplifies the preparation process, making it suitable for large-scale production.
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Abstract
Citation Information
Patent Citations
Multi-functional corrosion and scale inhibitor and preparation method thereof
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