A Comparative Study on the Eddy Current and Magnetic Flux Leakage Inline Inspection Technology in Long-Distance Oil and Gas Pipelines

In order to ensure energy security, inline inspection (ILl) of long-distance oil and gas pipelines has been widely used. The detection principles of eddy current (EC) and magnetic flux leakage (MFL) ILl are compared. And the detection ability, cost, labor intensity, defect detection rate and quantitative accuracy of the two detection methods are discussed. Based on an inspection case, the difference in the application scenarios of the two detection methods are compared. The above research provides a certain support and promotion effect on oil and gas long-distance pipeline detection and energy security.