Oil Drill Pipe Joints Ultrasonic Detection Method

The oil drill tube joint is one of the most important parts of oil exploitation, To assure being used safely under the well, It does not allow existing macroscopical flaws that exceed the standard. So It is indispensable in the produce tache to do the flaw detection . Using ultrasonic to do the detection is one of the main methods.Considering the particularity of their forms and the requirement of security, they customarily need a 100% detection and a full covering of the workpiece, so It is hard to detect. Practically in the real manufacture procedure, manual detection is being used with a low working efficiency and testing precision. In our research, we invent a new automatic system detecting the oil drill tube joins by ultrasonic, It has greatly improved the efficiency and has proved its effectiveness.This thesis is divided into four parts to discuss our research.Firstly, expatiating the generally method of tube detection by ultrasonic, and then according to the particularity of the oil drill tube joins, we give out different methods to solve the problems.Secondly, we intruduce the different parts of the system and the display modes of the data, then give a simple recommendation of the common methods of digital image processing. After that, we do the A scan and B scan with the data got from part one.Thirdly, from the user`s point of view, we make a introduction of the system and its whole flow.At the last part, The effect evaluation of the device is made. Also, the application field in the future and the improvement way of the device are estimated.Based on the applied project, problems of the oil drill tube joint detection are solved step by step. Finally, automatic and effective joint measurement method is realized.