MLchartDataset catalogue

Guard electrode

Term · Oil and gas · MLC-T-OAG-001765

An electrode on a resistivity logging tool that emits a focusing current to constrain the path of the primary measurement current. This current prevents the measurement current from spreading vertically along the borehole, forcing it to penetrate horizontally into the formation. Laterolog tools, which use this principle, provide accurate formation resistivity measurements in wells drilled with conductive, salt-based muds.

Table 1. Record
IdentifierMLC-T-OAG-001765
FieldOil and gas
SubjectFormation Evaluation
Record as JSON 
{
  "id": "MLC-T-OAG-001765",
  "term": "Guard electrode",
  "field": "Oil and gas",
  "definition": "An electrode on a resistivity logging tool that emits a focusing current to constrain the path of the primary measurement current. This current prevents the measurement current from spreading vertically along the borehole, forcing it to penetrate horizontally into the formation. Laterolog tools, which use this principle, provide accurate formation resistivity measurements in wells drilled with conductive, salt-based muds.",
  "subject": "Formation Evaluation",
  "url": "https://mlchart.com/terminology/oil-and-gas/guard-electrode/"
}

Record 1,895 of 4,469 in Oil and gas terminology (MLC-0103). Request the full dataset.