MLchartDataset catalogue

Porosity exponent

Term · Oil and gas · MLC-T-OAG-002871

An empirical constant, denoted as 'm', used in the Archie equation to relate the formation resistivity factor to the porosity of a rock. This exponent accounts for the tortuosity and geometry of the pore network, reflecting how the electrical current flows through the interconnected pores. Typical values for 'm' range from 1.8 to 2.2 for sandstones.

Table 1. Record
IdentifierMLC-T-OAG-002871
FieldOil and gas
SubjectFormation Evaluation
Record as JSON 
{
  "id": "MLC-T-OAG-002871",
  "term": "Porosity exponent",
  "field": "Oil and gas",
  "definition": "An empirical constant, denoted as 'm', used in the Archie equation to relate the formation resistivity factor to the porosity of a rock. This exponent accounts for the tortuosity and geometry of the pore network, reflecting how the electrical current flows through the interconnected pores. Typical values for 'm' range from 1.8 to 2.2 for sandstones.",
  "subject": "Formation Evaluation",
  "url": "https://mlchart.com/terminology/oil-and-gas/porosity-exponent/"
}

Record 3,079 of 4,499 in Oil and gas terminology (MLC-0103). Request the full dataset.