Metal Gain
Metal Gain :
(n.) Production Logging. The apparent increase in thickness of a casing or tubing string compared to the assumed value. Metal gain is determined by electromagnetic thickness, acoustic resonance or mechanical methods. The apparent increase is usually due a change of hardware, such as a casing coupling, a heavier joint, a pup joint, a mandrel or a valve. The term is used in contrast to metal loss caused by corrosion. Ant: metal loss, wall loss. See: Casing-Inspection Log, Electromagnetic Thickness, Multifinger Caliper, Ultrasonic Caliper
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