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The Use of Well Logging Analysis to Identify the 
Source
Rocks of the
Cenomanian Period, Northern Western Desert, Egypt
By
M. Sharaf1, W. El-Shahat1
(1) Faculty of Science, Benha, Egypt
The open hole well log data (BHC, FDC, CNL, DLL and GR) of five wells
(Sultan-1, Ashour-1, Lotus-1X, IG-24-2, Bardy-1X and IF-24-1) of East Khalda
concession are utilized to identify the source rocks in the study area as well
as the determination of organic carbon content of Abu Roash “G” Member and
Bahariya Formation. In this study the porosity/resistivity overlay technique is
used to differentiate the source and non-source rocks, moreover, organo-source
analysis of the studied rock units take place to illustrate the vertical
distribution of the total organic carbon content (TOC), total organic matter (TORG)
and the discriminate factor (D.F.). The results of the study area revealed that
the Abu Roash “G” Member contains fair amounts of organic carbon, while Bahariya
Formation contains good amounts of organic carbon, also, it was found that Abu
Roash “G” Member is a non-source rock in most of the studied wells, while
Bahariya Formation is considered as a source rock
in most of the studied wells.