Method for tracking a scraper within a pipeline
US8425683B2 · kind B2 · utility
2Cited by
10References
3Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 8, 2010 |
| Grant date | Apr 23, 2013 |
| Priority date | — |
| Expiry date | Jul 24, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S3/80
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for tracking a scraper within a pipeline has the steps of moving the scraper along a path in the pipeline such that the scraper produces an acoustic signal, sensing the acoustic signal as produced by the scraper by at least a pair of acoustic sensors positioned in spaced relation along the pipeline, time-stamping the sensed acoustic signal, and calculating a location of the scraper based on the time-stamped acoustic signal. The acoustic signal can be a transient pressure wave produced by the movement of the scraper or a pressure signal produced by a mechanism positioned on the scraper.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.