Reservoir Characterization Based on Seismic Inversion Techniques, at West Al Khilala Field, Onshore Nile Delta, Egypt”

Abstract

The area under study is the West Al-Khilala Field, which is a Messinian (Late Miocene) gas field, located in the southern part of the Onshore Nile Delta, North West El Mansoura concession, Egypt. The main objective of this study is the delineation of the structural and stratigraphic features, and the formation evaluation of the Messinian Abu Madi reservoir. These are carried out through the classical interpretation of seismic data and conventional electrical logs, then applying seismic inversion techniques, to get much more information about the Messinian Abu Madi reservoir. Geologically, West Al Khilala Field is controlled by two major normal faults trending NW-SE, down throwing to the east. It shows an elongated four-way dip closure trending NW-SE, parallel to the main eastern bounding faults. The available data for this study is twenty 2-D post-stack seismic sections and wireline logs of four wells, which are not sufficient to perform a detailed study of the structural and stratigraphic features, as well as reservoir characterization analysis for West Al-Khilala Field. So, it is needed to resample the given 2-D seismic lines into a 3-D grid, this resampling process was carried out using Petrel 2017.1 software. The first interpretation step is the seismic to well tie, to define the formation tops and the interested horizons to be picked. The traced faults across the field are normal faults, with the trend of NW-SE and a down