Petrophysics
Gamma Ray Index
Where:
IGR= gamma ray index (dec)
GR (log)= gamma ray reading of formation (API)
GR (min)= minimum gamma ray (clean sand or carbonate) (API)
GR (max)= maximum gamma ray (shale) (API)
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Where:
IGR= gamma ray index (dec)
GR (log)= gamma ray reading of formation (API)
GR (min)= minimum gamma ray (clean sand or carbonate) (API)
GR (max)= maximum gamma ray (shale) (API)
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