Limestone compatible scale

{
  "id": "MLC-T-OAG-002166",
  "term": "Limestone compatible scale",
  "field": "Oil and gas",
  "definition": "A pair of track scales for the density and neutron porosity curves, chosen so that the two curves lie on top of each other in clean water-filled limestone. The density scale runs from 1.95 to 2.95 g/cm3 and the neutron scale from 45 down to minus 15 porosity units, which places the limestone density of 2.71 g/cm3 at zero porosity units. Separation between the curves signals gas or a lithology other than limestone.",
  "subject": "Formation Evaluation",
  "url": "https://mlchart.com/terminology/oil-and-gas/limestone-compatible-scale/"
}