Schlumberger

Scanning for Downhole Corrosion

Downhole Scanner
Publication: Oilfield Review
Volume: 22
Issue: 1
Publication Date: 03/01/2010

Downhole corrosion can be detected and monitored using electromagnetic induction tools. This article describes the physics of pipe thickness measurement using a new electromagnetic tool with several sets of coil sensors. One set of coils determines the characteristics of the pipe metal; others measure average thickness of the pipe wall. A set of 18 sensors on arms pressed against the inside wall maps pipe damage with two-dimensional images.



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