Oilfield Glossary
Oilfield Glossary
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delta rho

1. n. [Formation Evaluation]
A log that shows the magnitude of the correction applied to the long-spacing detector of a density measurement. When delta rho is above a certain value, typically +/- 0.15 g/cm3, the correction may no longer be accurate, and needs to be examined in more detail. Delta rho is also used as a qualitative indicator of borehole rugosity.