Abstract
This paper presents different well log data interpretation techniques for evaluating the reservoir quality for the sandstone reservoir of the Alam El-Bueib-3A Member in Safir-03 well, Shushan Basin, Egypt. The evaluation of the available well log data for the Alam El-Bueib-3A Member in this well indicated high quality as oil-producing reservoir between depths 8108–8133 ft (25 ft thick). The calculated reservoir parameters possess shale volume less than or equal to 9% indicating the clean nature of this sandstone interval, water saturation values range from 10 to 23%, and effective porosity varies between 19 and 23%. Bulk volume of water is less than 0.04, non-producing water (SWirr) saturation varies between 10 and 12%, and permeability ranges from 393 to 1339 MD reflecting excellent reservoir quality. The calculated BVW values are less than the minimum (BVWmin = 0.05) reflecting clean (no water) oil production, which was confirmed through the drill stem test (DST). The relative permeabilities to both water and oil are located between 0.01–0 and 1.0–0.5, respectively. The water cut is fairly low where it ranges between 0 and 20%. Additionally, the water saturation values are less than the critical water saturation (Scw = 29.5%) which reflects that the whole net pay will flow hydrocarbon, whereas the water phase will remain immobile. This was confirmed with reservoir engineering through the DST.
Highlights
The Western Desert represents one of the greatest productive hydrocarbon’s provinces in the Egyptian territory
The visual examination of the available well log data for the Alam El Bueib (AEB)-3A Member in the Safir-03 well indicates that the interval from 8108 to 8133 ft has very interesting log characters and optimistic log curve shapes (Fig. 4)
This interval reflects good hole conditions as indicated by the caliper log (CALX) that reads borehole diameter values that are equal to the bit size (BIT) or even less than it
Summary
The Western Desert represents one of the greatest productive hydrocarbon’s provinces in the Egyptian territory. The Shushan Basin has a significant exploration potential in northern Western Desert (EGPC 1992). It represents one of the numerous hydrocarbon discoveries situated in this extremely faulted sedimentary basin. It is distinguished by high oil and gas accumulations which attracted the concern of the researchers and oil companies for hydrocarbons exploration. Khalda Petroleum Company was the main producer company since the discovery of Safir Oil Field in 1986
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