MLchartDataset catalogue

Guard log

Term · Oil and gas · MLC-T-OAG-001766

A type of focused resistivity log that uses guard electrodes to force the measuring current to flow horizontally into the formation, providing a deep measurement of true formation resistivity. This tool is particularly effective in highly resistive formations and in wells with conductive drilling mud. It provides a more accurate resistivity measurement by minimizing the influence of the borehole and invaded zone.

Table 1. Record
IdentifierMLC-T-OAG-001766
FieldOil and gas
SubjectFormation Evaluation
Record as JSON 
{
  "id": "MLC-T-OAG-001766",
  "term": "Guard log",
  "field": "Oil and gas",
  "definition": "A type of focused resistivity log that uses guard electrodes to force the measuring current to flow horizontally into the formation, providing a deep measurement of true formation resistivity. This tool is particularly effective in highly resistive formations and in wells with conductive drilling mud. It provides a more accurate resistivity measurement by minimizing the influence of the borehole and invaded zone.",
  "subject": "Formation Evaluation",
  "url": "https://mlchart.com/terminology/oil-and-gas/guard-log/"
}

Record 1,896 of 4,469 in Oil and gas terminology (MLC-0103). Request the full dataset.