Patent ID: 6931748
Filing Date: 2005-08-23
Classification: G01B

Abstract:
1. A method for measuring inner diameter of a tubular, the tubular being hollow, the method comprising positioning a system for measuring inner diameter of a tubular within the tubular, the system comprising at least one linear distance measuring device movable through the tubular, a main body disposable within the tubular, the at least one linear distance measuring device mounted on the main body, the system including maintenance apparatus for maintaining the at least one linear distance measuring device spaced apart from and not in contact with the tubular as the at least one linear distance measuring device moves through the tubular, moving the at least one linear distance measuring device through the tubular, and producing with the at least one linear distance measuring device a measurement signal indicative of a distance from the at least one linear distance measuring device to an inner surface of said tubular.