Calculate Petrophysics Properties for Gir Formation (Facha Member) in Dahab Field- NC74, Sirte Basin

الملخص

The research represents a study of some of the physical and cutting properties of well (C1) which is located within the concession (NC74-A) of the Zueitina Company located in the Sirte Basin.

The records obtained are,(self-potential, electrical resistance, radiation, volumetric density and sound wave records) in order to identify the physical properties of the layers of the Fasha Dolomite member of Gir Formation. Moreover, study the stratigraphic sequence of the area where readings are taken for these records 2ft for each depth unit, and to calculate the net pay of the formation.

The results obtained were represented in porosity, which ranges on average between (9.89-44.9%), and the average mud volume ranges between (5.19-54.2%) and the average water saturation ratio 35.7-95.6%) for all unites. It also became clear from the results that, Unit A and B are the best reservoir quality that other units because they have porosity range (8.5 – 10 %), water saturation (35.7 – 55.4 %) also very good permeability and oil saturation which, considered oil producers and of very high economic quality. Other units cannot be good reservoir because they have high water saturation and low oil saturation. Besides, the reservoir net pay very good and equal to 892Ft.