Invention Grant
- Patent Title: System and method for detecting material loss in a tubular
-
Application No.: US14882969Application Date: 2015-10-14
-
Publication No.: US09671370B2Publication Date: 2017-06-06
- Inventor: Matthias Janssen , Stefan Haberla
- Applicant: National Oilwell Varco, L.P.
- Applicant Address: US TX Houston
- Assignee: NATIONAL OILWELL VARCO, L.P.
- Current Assignee: NATIONAL OILWELL VARCO, L.P.
- Current Assignee Address: US TX Houston
- Agency: Conley Rose, P.C.
- Main IPC: G01N27/82
- IPC: G01N27/82 ; E21B47/00 ; G01N27/72

Abstract:
A method and system for detecting material loss in a tubular. A method includes identifying a radial cross-sectional area of a tubular as having a loss of material in a wall of the tubular. Responsive to the identifying, an amount of voltage offset present in each of a plurality of measurement signals is determined. Each of the measurement signals provides measurement information for an arc section of the wall. For each of the measurement signals, a zero adjusted signal is produced by adjusting the measurement signal to remove the amount of voltage offset over a length of the tubular for which the identifying recognizes the loss of material. An assessment of wall material loss is produced for each arc section of the wall of the tubular based on the zero adjusted signals. An image of the wall of the tubular showing the wall material loss for each arc section is generated.
Public/Granted literature
- US20170108468A1 SYSTEM AND METHOD FOR DETECTING MATERIAL LOSS IN A TUBULAR Public/Granted day:2017-04-20
Information query