Logging-while-drilling

{
  "id": "MLC-T-OAG-002214",
  "term": "Logging-while-drilling",
  "field": "Oil and gas",
  "definition": "The technique of embedding formation evaluation sensors into the bottomhole assembly to acquire petrophysical and geomechanical data as the well is being drilled. This method provides real-time information on properties like resistivity, porosity, and gamma ray emissions, which are transmitted to the surface via mud pulse telemetry or other methods. LWD tools are distinct from measurement-while-drilling tools, which focus on directional survey and drilling parameters.",
  "subject": "Drilling",
  "url": "https://mlchart.com/terminology/oil-and-gas/logging-while-drilling/"
}