GEOPHYSICS LETTERS

Ghalib, M. et. al. 27This zone is the upper zone in wells no. 6, 7, 224 and 252 of theHammam Faraun Member. It lies under the lower' anhydritic unit ofSouth Gharib Formation in these wells. The neutron-density crossplotsto this zone represent porosity range between "0.07 to 0.20" asshown on Fig. (11), the drilled thickness of this zone is 15 m. in well-6,21 m. in well-7, 8 m. in wel]-224, and 30.5 m. in well-252.2 - The electro-litho zone 11:This zone is the upper zone of Hammam Faraun Member in well-9,it underlying the lower anhydritic unit of South Gharib formation inthis well. It is the second zone in wells- 6, 7, and 252. The neutrondensitycross-plots to this zone represent porosity range between "0.20to 0.30" as shown on Fig. (11). The thickness of this zone is 63.5 m. inwell-9, 13.5 m. in well-6, 45 m. in well-7, and 4.5 m. in well-252.3 - The electro-litho zone Ill:This zone is present in wells-19 and 24. It is underlying the loweranhydritic unit of South Gharib formation in these two wells. Theneutron-density cross-plots to this zone porosity range between "0.04to 0.12" as shown on Fig. (11), the drilling thickness of this zone isabout 16m. in well-19, and 10.5m. in well-24.4 - The electro-litho zone IV:This zone is present in wells-9,20, and 19, the neutron-densitycross-plots to this zone, Fig. (11) represent porosity range between"0.30 to 0.45". The drilling thickness of this zone in well-9 is about 42m., in well-20 is about 75 m., and in well- 19 is about 38 m.5 -the electro-litho zone V:This zone is present only in well-6, the neutron-density responsedifferentiate it from the underlying and overlying zones; the neutrondensitycross-plot to this zone represents porosity range between "0.12to 0.18" as shown on Fig. (11), the drilling thickness of this zone inwel]-6is about35 m.'6 -The electro-litho zone VI:This zone is present in wells-6, 9, 19, 24, 224, and 252. The neutrondensity cross-plots to this zone represent porosity range between "0.20to 0.26" as shown on Fig. (11), the/drilling thickness of this zone inwell-252 is 16.5m. , in well-224 is 14.5m., in well-24 is 8m., in well-19is 10m., in well-9 is 13.5m, and in well-6 is 6.5 m.