Method and apparatus for detecting angular defects in a tubular member
US5043663A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 10, 1990 |
| Grant date | Aug 27, 1991 |
| Priority date | — |
| Expiry date | May 10, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/908
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for determining the extent of defects in tubular elements for use in an oil or gas well is disclosed. The apparatus includes an electromagnetic or other suitable inspection device, cooperating with longitudinal and circumferential position detectors for determining the position and configuration of all defects within a tubular member. Signal generating means are provided for producing signals corresponding to the configuration, longitudinal position, and circumferential position of the defects located within the wall of the tubular member. The signals are processed, preferably by a computer, so that the presence, nature, and precise location of each defect is determined and visually displayed at a suitable display means. Display means are provided for generating a two-dimensional visual display wherein the circumferential and longitudinal positions of the defects are selectably displayed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.