System to screen for longitudinal-seam anomalies
US9581520B2 · kind B2 · utility
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29References
24Claims
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Key dates
| Filing date | Nov 19, 2010 |
| Grant date | Feb 28, 2017 |
| Priority date | — |
| Expiry date | Sep 19, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M5/0091
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Embodiments of the present invention provide systems to detect crack-like features in pipeline welds using magnetic flux leakage data and pattern recognition. A screening process, for example, does not affect or change how survey data is recorded in survey tools; only how it is analyzed after the survey data is completed. Embodiments of the present invention can be used to screen for very narrow axial anomalies in the pipeline welds, and may also be used to predict the length of such anomalies. Embodiments of the present invention also produce a listing of the anomalies based on their relative signal characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.