Phase shift

{
  "id": "MLC-T-OAG-002771",
  "term": "Phase shift",
  "field": "Oil and gas",
  "definition": "The angular difference in the phase of an electromagnetic wave transmitted into the formation compared to the phase of the wave received by a detector. This shift is caused by the wave's propagation through the formation and is directly related to the formation's dielectric permittivity and conductivity. It is a primary measurement in high-frequency induction logging tools.",
  "subject": "Formation Evaluation",
  "url": "https://mlchart.com/terminology/oil-and-gas/phase-shift/"
}