Iteratively re-weighted least squares inversion for the estimation of density from well logs: part one

A.Nassir Saeed and Laurence R. Lines and Gary F. Margrave


A quantitative analysis of density log is established in this study by inverting of density log. The re-weighted inverse algorithm of density log using different constraints in model-structure space have shown stable and fast convergence towards the final model with few numbers of iterations. The inverted density model has resolved different lithology layers, and successfully delineated gas-bearing sand reservoir of the Blackfoot.

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