Method and apparatus for simulating electrical characteristics of a coated segment of a pipeline
US7876110B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 10, 2008 |
| Grant date | Jan 25, 2011 |
| Priority date | — |
| Expiry date | Sep 30, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N17/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Method and apparatus for simulating electrical pipe-to-soil impedance of a coated segment of a pipeline includes simulating a current injection point to a buried pipe section, simulating a first output signal from a magnetometer positioned at a first location over the buried pipe section, simulating a second output signal from a magnetometer positioned at a second location over the buried pipe section, simulating bonding of pipe coating of the pipe section, and simulating soil resistance of a soil environment surrounding the buried pipe section. The invention includes both field-test simulation with calibration pipe samples, and bench-test simulation using electronic simulation of the pipe coating. The simulations may be used for test and general calibration of MEIS pipeline coating inspection systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.