Riser and tubular inspection systems

US6931748B2 · kind B2 · utility

Assignee

• VARCO I/P, INC. · US

Inventors

• Clive Lam · Tomball, US
• Manfred Worms · Bad Doberan, DE
• Helmut Knapwost · Bad Doberan, DE
• Bernd Helmut Dobberstein · Burgdorf, DE
• Reinhold Kammann · Celle, DE
• Matthias Janssen · Meinerzhagen, DE

Key dates

• Filing date: Apr 1, 2003
• Grant date: Aug 23, 2005
• Expiry date: Apr 1, 2023

Classification

• Technology area (CPC G): Physics
• CPC primary: G01B7/281
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A system for measuring inner diameter of a tubular, e.g., but not limited to, a riser or a pipe, the system including at least one linear distance measuring device movable through a hollow tubular, a main body also movable through said tubular, the at least one linear distance measuring device mounted on the main body, and the at least one linear distance measuring device for producing a measurement signal indicative of a measurement of inner diameter of the tubular.