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Accuracy of spectral gamma-log interpretation models

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3 Author(s)
Kozhevnikov, D.A. ; State Oil & Gas Acad., Moscow, Russia ; Lazutkina, N.Ye. ; Melchuk, B.Yu.

Considered are benefits of new interpretation models of the natural spectral gamma-ray log based the application of the analytical algorithms of radial “geometrical factors”. A combined technique of computer simulation and analytical interpretation models is used to study the influence of geological and downhole conditions and statistical errors on the the accuracy of interpretations of spectral gamma logs. A comparison between analytical algorithms and those based on the reduction to standard downhole conditions is presented. The analytical structure of the new interpretation algorithms provides upper estimates of the interpretation accuracy and concurrent computation of radionuclide abundances

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Nuclear Science, IEEE Transactions on  (Volume:42 ,  Issue: 4 )