Caustic extraction test

{
  "id": "MLC-T-OAG-000596",
  "term": "Caustic extraction test",
  "field": "Oil and gas",
  "definition": "A laboratory test on a barite sample to find out whether it contains sulfide or carbonate minerals that dissolve in caustic solution. Such minerals can release soluble sulfide or carbonate into a drilling fluid once the barite is mixed in, so the test screens a weighting material before it is used. The method was described in a 1981 Journal of Petroleum Technology paper by Binder, Carlton, and Garrett.",
  "subject": "Drilling Fluids",
  "url": "https://mlchart.com/terminology/oil-and-gas/caustic-extraction-test/"
}