Formation evaluation while drilling

{
  "id": "MLC-T-OAG-001534",
  "term": "Formation evaluation while drilling",
  "field": "Oil and gas",
  "definition": "The process of acquiring and interpreting geological and petrophysical data about subsurface formations in real-time as a well is being drilled. This involves specialized logging-while-drilling (LWD) tools that measure properties such as resistivity, porosity, and gamma ray emissions. The data guides drilling decisions, well placement, and reservoir characterization.",
  "subject": "Drilling",
  "url": "https://mlchart.com/terminology/oil-and-gas/formation-evaluation-while-drilling/"
}