Nonconductive drilling fluid

{
  "id": "MLC-T-OAG-002553",
  "term": "Nonconductive drilling fluid",
  "field": "Oil and gas",
  "definition": "A drilling fluid whose continuous phase is electrically insulating, as in oil-base and synthetic-base muds. Current cannot flow through it, so galvanic logging tools that inject current into the formation, such as laterologs and micro-resistivity devices, cannot be used, whereas induction logs, which induce current with a magnetic field, work well. Water-based muds, in contrast, conduct through dissolved salts, which makes electrode tools workable.",
  "subject": "Drilling Fluids",
  "url": "https://mlchart.com/terminology/oil-and-gas/nonconductive-drilling-fluid/"
}