Multi-cabin System for ILI of Oil and Gas Pipelines Based on Eddy Current Method

With the increasing concern about the safety of oil transportation, the ILI technology is becoming more and more important. By utilizing the pulsed eddy current with strong excitation and penetration ability, the ILI tool can conduct detections on different types of damages to pipelines. As the extremely slow response of the eddy current leads to the problem of low resolution in pipeline damage detection, a multi-cabin model is proposed to make up for the sparse measurement points of the traditional eddy current method. We have designed a multi-cabin ILI system and simulated the proposed model through COMSOL software. The results show that this method can not only more accurately determine the location of the defect, improve the longitudinal resolution of the instrument, but also depict the defect shape. This method and system are the applications in the construction of the transient electromagnetic technology practice platform, which enhances the ability of students to solve complex engineering problems.