Magnetic flux leakage inspection tool for pipelines
US6023986A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 23, 1998 |
| Grant date | Feb 15, 2000 |
| Priority date | — |
| Expiry date | Mar 23, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M3/005
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention includes a pipeline feature or defect location system including an in-line inspection tool, an inertial navigation system (INS), control points for use with a global positioning system (GPS) and an INS, and a computer programmed with post processing software. Once the longitude, latitude and elevation of the pipeline feature or defect is identified using the in-line inspection system of this invention. The longitude latitude, and elevation of the pipeline feature or defect can be identified by the INS. An efficient method for improving the accuracy of the identified longitude, latitude and elevation of the pipeline feature or defect is by adjusting the geographic coordinates to those determined by using a GPS. Data collected from the pipeline feature or defect location system may be incorporated into geographic information service software.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.