Metal gain

{
  "id": "MLC-T-OAG-002326",
  "term": "Metal gain",
  "field": "Oil and gas",
  "definition": "An increase in the apparent amount of metal in a casing or tubing joint shown by an electromagnetic or magnetic inspection log, compared with nominal wall thickness. It is caused by extra steel such as a patch, liner or collar, or by magnetic debris and scale sitting on the pipe, and it is the opposite of metal loss from corrosion. On decay-based electromagnetic logs it appears as slower signal decay, while metal loss shows faster decay.",
  "subject": "Production Logging",
  "url": "https://mlchart.com/terminology/oil-and-gas/metal-gain/"
}