MLchartDataset catalogue

Magnetic mud

Term · Oil and gas · MLC-T-OAG-002254

A drilling fluid that carries enough magnetic material, such as magnetite, iron-rich weighting agents or steel fines, to disturb magnetic measurements. It distorts the quadrature signal of induction tools and corrupts compass-based surveys of the well path made by MWD tools, so it is a nuisance to be corrected for, not a deliberate design. Invasion of the mud into the formation extends the affected zone around the borehole.

Table 1. Record
IdentifierMLC-T-OAG-002254
FieldOil and gas
SubjectFormation Evaluation
Record as JSON 
{
  "id": "MLC-T-OAG-002254",
  "term": "Magnetic mud",
  "field": "Oil and gas",
  "definition": "A drilling fluid that carries enough magnetic material, such as magnetite, iron-rich weighting agents or steel fines, to disturb magnetic measurements. It distorts the quadrature signal of induction tools and corrupts compass-based surveys of the well path made by MWD tools, so it is a nuisance to be corrected for, not a deliberate design. Invasion of the mud into the formation extends the affected zone around the borehole.",
  "subject": "Formation Evaluation",
  "url": "https://mlchart.com/terminology/oil-and-gas/magnetic-mud/"
}

Record 2,408 of 4,469 in Oil and gas terminology (MLC-0103). Request the full dataset.