Considering all ILI runs where Baker Hughes PMG has made mechanical damage predictions — most of which fell outside the scope of this study — approximately 95% of all pipelines contained at least one mechanical damage prediction that would have otherwise not been predicted by stand-alone caliper or other ILI technologies. This indicates that there are a significant number of unreported mechanical damage anomalies remaining in pipeline systems. While this method of detecting mechanical damage is not the panacea that many may hope for, it has proven to be extremely effective in detecting potentially injurious defects that would otherwise go unreported. In this study alone, 289 such mechanical damage defects were identified and remediated. Much more work remains to be done on the subject of detection and assessment of mechanical damage. This study shows that high-resolution MFL data can yield valuable information if the proper analysis techniques are applied.
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