Development status and thinking of oil and gas pipeline corrosion detection technology

Abstract

Regular internal and external detection on oil and gas pipelines is helpful for timely and accurate detection of pipeline corrosion defects, and to take appropriate maintenance and replacement measures and effectively reduce the occurrence probability of corrosion accidents. Focusing on the problems of external corrosion, internal corrosion, stress corrosion cracking, and external corrosion of crossing sections, the development status of corrosion detection technology and related standards for oil and gas pipelines was elaborated, the principles and engineering applications of trenchless detection technologies such as transient electromagnetic detection, ultrasonic guided wave detection, and magnetic stress detection were introduced, the problems existing in the application and management of corrosion detection technology for oil and gas pipelines in China were summarized, and the demands for future development were discussed from the aspects of management improvement and technology upgrading. In terms of management improvement, it was proposed to build a unified technical specification, data management platform and professional corrosion detection efficiency evaluation team. As for technology upgrading, it was suggested to continuously carry out research on stress corrosion cracking detection and assessment technology, initiate research on microbial corrosion mechanism and detection technology, carry out research on pinhole corrosion defect detection and verification technology, and develop combined internal and external detection tools.

Keywords

• oil and gas pipeline
• corrosion detection
• direct assessment
• external corrosion
• internal corrosion
• stress corrosion cracking
• external corrosion
• trenchless detection