MLchartDataset catalogue

Dephasing

Term · Oil and gas · MLC-T-OAG-001001

The process by which nuclear magnetic moments, initially aligned by a magnetic field, lose their coherent transverse alignment. This loss of phase coherence is caused by interactions with local magnetic field inhomogeneities and spin-spin relaxation. The rate of dephasing is characterized by the transverse relaxation time, T2, which is a key parameter measured in nuclear magnetic resonance (NMR) logging to estimate pore size distribution and fluid type.

Table 1. Record
IdentifierMLC-T-OAG-001001
FieldOil and gas
SubjectFormation Evaluation
Record as JSON 
{
  "id": "MLC-T-OAG-001001",
  "term": "Dephasing",
  "field": "Oil and gas",
  "definition": "The process by which nuclear magnetic moments, initially aligned by a magnetic field, lose their coherent transverse alignment. This loss of phase coherence is caused by interactions with local magnetic field inhomogeneities and spin-spin relaxation. The rate of dephasing is characterized by the transverse relaxation time, T2, which is a key parameter measured in nuclear magnetic resonance (NMR) logging to estimate pore size distribution and fluid type.",
  "subject": "Formation Evaluation",
  "url": "https://mlchart.com/terminology/oil-and-gas/dephasing/"
}

Record 1,071 of 4,468 in Oil and gas terminology (MLC-0103). Request the full dataset.