Abstract

The evaluating of the Hawaz reservoir in the Murzuq basin based on the well recording data available for twelve exploratory were provided for this study. These records data have been examined through employing some cross-plots and use their outputs for controlling the interactive petrophysics software in order to identify the lithological constituents and fluid saturation parameters.The litho-saturation cross-plot indicated that the Hawaz Formation consists of sandstones with few shale.The Hawaz formation officially subdivided intoeight horizons, namely H1–H8. Horizons (H4 and H5) are the main reservoirs in Hawaz formation as all readings indicate its high resistivity, with positive differentiation between its different curves, high porosity, and low gamma ray. BVW min technology is introduced the fast method depends on calculating the minimum total water volume so that the reservoir is considered to contain irreducible water, meaning that water will not be produced with the oil. The value of BVW min was 0.05, meaning that any range for which the product of porosity multiplied by water saturation (Φ.SW) is greater than that value is excluded from any detailed calculations.Also, calculate the minimum value of electrical resistance (Rtmin=140ῼm) for oil production zones, where zones with electrical resistivity less than that value are excluded. Keywords: Hawaz Formation, H field of NC186, petrophysical parameters, well logging.

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