Abstract
ABSTRACT The present work evaluates the hydrocarbon potentiality of Abu Roash Formation in SWQ-25 well, Southwest Qarun (SWQ) Field, Gindi Basin, Egypt. The estimation of total organic carbon content (TOC) has been deduced using the overlay between deep resistivity and porosity logs. The results show that Abu Roash A Member is fair to good source rock (TOC ranges from 0.50 to 1.28 wt. %). While, Abu Roash D Member contains fair to very good TOC values (from 0.77 to 2.92 wt. %). In contrast, Abu Roash B and E members display poor to good source rocks, with TOC varies between 0.36 to 1.74 wt. % and 0.32 to 1.42 wt. %, respectively. However, Abu Roash C Member (with TOC varies between 1.50 and 2.19 wt. %) and Abu Roash F Member (with TOC differs from 1.54 to 3.16 wt. %) indicate a good to very good source rock intervals. The neutron porosity–resistivity overlay matches the density-resistivity overlay in carbonate members (A, B, C, D and F members) but a lack of resemblance in clastic units (E and G members).
Highlights
The Gindi Basin (Figure 1) is a rift basin formed in the Jurassic-Early Cretaceous time due to the opening of the Neo-Tethys Sea and the Atlantic Ocean (Moustafa 2008)
The results show that Abu Roash A Member is fair to good source rock (TOC ranges from 0.50 to 1.28 wt. %)
The SWQ-25 well located at longitude 30° 31ʹ 14.410” E and latitude 29° 46ʹ 18.611” N, Southwest Qarun field, Gindi Basin
Summary
The Gindi Basin (Figure 1) is a rift basin formed in the Jurassic-Early Cretaceous time due to the opening of the Neo-Tethys Sea and the Atlantic Ocean (Moustafa 2008). It is located in northern Western Desert and underwent inversion and dextral shearing during the Late Cretaceous time (Moustafa 2008; Sarhan 2017; Sarhan and Collier 2018). It is composed of alternations of clastics and carbonates deposited under shallow marine environment (EGPC, 1992). The B, D and F units consist of limestone; A, C, E and G units contain variable amounts of sandstone, shale and siltstone (Figure 2)
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