Limestone porosity unit

{
  "id": "MLC-T-OAG-002167",
  "term": "Limestone porosity unit",
  "field": "Oil and gas",
  "definition": "A standard unit of measurement for porosity, where the porosity value is calibrated to a limestone matrix. This means that a log reading of 10 porosity units (PU) corresponds to 10% pore space in a formation with the acoustic or density properties of pure limestone. It provides a consistent basis for comparing porosity across different lithologies.",
  "subject": "Formation Evaluation",
  "url": "https://mlchart.com/terminology/oil-and-gas/limestone-porosity-unit/"
}