MLchartDataset catalogue

Delta rho

Term · Oil and gas · MLC-T-OAG-000990

The density correction applied to the bulk density measurement of a gamma-gamma density tool, which compensates for mudcake and tool standoff. It is derived from the difference between the long-spacing and short-spacing detector densities using the spine-and-ribs relationship, and it is recorded as a curve in grams per cubic centimeter. Corrections beyond about plus or minus 0.15 g/cm3 mean the compensation is no longer reliable, so the density reading is treated with caution.

Table 1. Record
IdentifierMLC-T-OAG-000990
FieldOil and gas
SubjectFormation Evaluation
Record as JSON 
{
  "id": "MLC-T-OAG-000990",
  "term": "Delta rho",
  "field": "Oil and gas",
  "definition": "The density correction applied to the bulk density measurement of a gamma-gamma density tool, which compensates for mudcake and tool standoff. It is derived from the difference between the long-spacing and short-spacing detector densities using the spine-and-ribs relationship, and it is recorded as a curve in grams per cubic centimeter. Corrections beyond about plus or minus 0.15 g/cm3 mean the compensation is no longer reliable, so the density reading is treated with caution.",
  "subject": "Formation Evaluation",
  "url": "https://mlchart.com/terminology/oil-and-gas/delta-rho/"
}

Record 1,058 of 4,469 in Oil and gas terminology (MLC-0103). Request the full dataset.