Corrosion Inspection in Drill Pipe by Phasedarray Ultrasonic Technique

The effective evaluation of drill pipe internal corrosion plays an important role in improving drilling safety and minimizing drilling costs. This paper describes one of the methods for drill pipe internal corrosion inspection by phasedarray ultrasonic technique. Meanwhile, through the contrast test block and the actual work the method has been proven having sufficient sensitivity and resolution for the inner wall corrosion testing of drill pipe, and it can achieve better results.