Defect quantitative nondestructive testing equipment for oil casing

Abstract

The invention relates to defect quantitative nondestructive testing equipment for an oil casing. The equipment is composed of probes, a probe frame, a wireless signal transmission and signal amplification system, balls, a stator, a mover, a bracket and rollers. The cylindrical stator wound with copper wires is fixed on the bracket; the three balls are fixed on the inner surface of the stator; the drum mover wound with copper wires is arranged on the balls; the mover and the probe frame are connected into a whole; the 2-4 probes are uniformly arranged on the inner surface of the probe frame along a circumferential direction; the wireless signal transmission and signal amplification system and the battery are arranged on the outer surface of the probe frame, and are connected with the probes; and the rollers are arranged at two sides of the bracket. The equipment employs an electromagnetic method to avoid the cleaning requirements, and to acquire a large amount of information, such as defect length, depth and position, without visual inspection on the detection zone; and the detection results can be recorded in a computer as historical data for later data source tracing and audit.

Description

technical field [0001] The invention relates to a quantitative non-destructive testing device for defects of oil and casing pipes. Background technique [0002] Existing methods such as radiographic testing, ultrasonic testing, magnetic particle testing, penetrant testing, and eddy current testing for oil and casing defects can achieve qualitative detection of defects exceeding the standard, but they cannot determine the size of surface or internal defects, and cannot guarantee the safety of oil and casing in use. The data provided by the calculation of reliability cannot be applied to the reliability design of tubing and casing strings. A non-destructive testing method that can quantitatively detect the size of defects is needed to provide basic data for the reliability design of tubing strings. The defect quantitative nondestructive detection probe for oil and casing pipes of the present invention can provide equipment conditions for the defect quantitative detection metho...

AI Technical Summary

Problems solved by technology

[0002] Existing methods such as radiographic testing, ultrasonic testing, magnetic particle testing, penetrant testing, and eddy current testing for oil and casing defects can achieve qualitative detection of defects exceeding the standard, but cannot determine the size of surface or internal defects, and cannot guarantee the safety of oil and casing in use. The data provided by the calculation of the reliability cannot be applied to the reliability design of the tubing string, and a non-destructive testing method that can quantitatively detect the defect size is needed to provide basic data for the reliability design of the string

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