Abstract

The present paper deals with evaluation of petrophysical parameters of Hawaz Formation at J oil field, Concession NC186 in Murzuq basin through the analysis of well-logging data available for ten exploratory wells. A comprehensive formation evaluation has been applied through numbers of crossplots and use their output parameters as input data for interactive petrophysics software (IP) in order to evaluate the lithological constituents and fluid saturations. The lithosaturation crossplots indicated that the Hawaz Formation consists of sandstones with few shale. These sandstones are generally fine to very fine grains but occasionally coarse to very coarse grained, and coursing upward sequence is indicated. The lithosaturation crossplots also illustrated that horizons H4 and H5 are the main reservoirs in Hawaz formation.

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