Development and Application of an Online Detection Device for Well Testing Steel Wire

At present, there are not all testing methods for well testing steel wire. Non magnetic well testing steel wire can only be used to determine the mechanical properties of the steel wire by cutting the front end of the wire and conducting tensile and torsional performance experiments. The damage of the entire disc can be judged through visual observation, which is different from the actual use of the well testing steel wire and cannot fully reflect the changes in the well testing steel wire, resulting in safety hazards in wire operation. In response to the above issues, an online detection device for well testing steel wire has been developed, which consists of four parts: a cleaning system, a detection system, a marking system, and a control system. The cleaning system completes surface dirt cleaning without damaging the steel wire, ensuring that there are no attachments on the surface of the steel wire, and preventing detection misjudgment; The detection system is mainly composed of three profilers, which use laser scanning technology and center positioning algorithm to determine the center of the circle in real-time, calculate the diameter of the well testing steel wire and the size of surface defects. The operation speed is within 30 m/min, and can detect various types of well testing steel wires with a diameter of 2 mm−5 mm, with a detection accuracy of no more than 0.05 mm; The marking system marks the abnormal parts detected for secondary diagnosis. At the same time, the overall device is lightweight and easy to carry, with simple installation and operation. It can be directly stuck on the testing steel wire, and can be detected from any section of the testing steel wire, without being affected by the shaking of the steel wire during the operation process. It achieves real-time online detection on the job site, enabling steel wire operators to timely grasp the overall performance of the steel wire, providing strong safety guarantees for steel wire operations.