Density Effects on Seismic Reflectivity of Upper Eocene-Upper Jurrasic Rocks in the Northern Western Desert, Egypt

By

A.M. Helal¹, W. El-Shahat²

(1) Ain Shams University, Cairo, Egypt (2) Faculty of Science, Benha, Egypt

 The present study is concerned to set some relationships between seismic reflectivity and the physical properties (porosity and density) and the lithologic composition of the Upper Eocene-Oligocene (Dabaa Formation) to the Upper Jurassic (Massajid Formation) in the area located to the east of Khalda oil field. The available well logging data are used to determine the lithologic components, porosity and density of the studied rocks in four wells (Sultan-1, Ashour-1, IG-24-2 and IF-24-1). The velocity and density data are interpreted in order to define the seismic reflectivity at the interface of the rock units. The results proved that the reflection coefficient estimated from velocity and density is maximum at the boundaries between clastic and non-clastic rocks