Sucker rod default eddy current detector and its application

Eddy current detection mechanism used in sucker rod default detector is introduced in this paper.The equipment can test defaults such as horizontal cracks on sucker rod surface on line.The application of the test result can be used to prevent or decrease sucker rod failure in pumping wells.Therefor,it has better effects to guarantee pumping well production.This paper describes the working principle and characteristics of the detector.Field application shows that the detector is applicable on well heads.The detecting process has no harm to the sucker rod surface.