Attenuation resistivity

{
  "id": "MLC-T-OAG-000209",
  "term": "Attenuation resistivity",
  "field": "Oil and gas",
  "definition": "A formation resistivity measurement derived from the attenuation, or reduction in amplitude, of an electromagnetic wave as it propagates through the rock. This measurement is a primary output of logging-while-drilling (LWD) propagation resistivity tools, which transmit electromagnetic waves at frequencies around 2 megahertz. Attenuation resistivity is less affected by borehole conditions than phase-shift resistivity and provides a deep reading for calculating water saturation in real time.",
  "subject": "Formation Evaluation",
  "url": "https://mlchart.com/terminology/oil-and-gas/attenuation-resistivity/"
}