TITLE:
Seismic Imaging and Reservoir Architecture of Sub-Marine Channel Systems Offshore West Nile Delta of Egypt
AUTHORS:
Essam Sharaf, Ibrahim Korrat, Hamdy Seisa, Eslam Esmaiel
KEYWORDS:
Offshore Nile Delta, Western Nile Delta, Seismic, Reservoir Architecture, Submarine Channel System
JOURNAL NAME:
Open Journal of Geology,
Vol.4 No.12,
December
31,
2014
ABSTRACT: Offshore Nile Delta gas
reservoirs are dominated by slope-channel systems of Plio-Pleistocene age.
High-quality, three-dimensional seismic imaging has significantly helped in
defining the geomorphology and architectures of these channels. Integrating
seismic, logs and core data from four wells resulted in understanding of
different stages of channel development and reservoir quality. The studied
reservoirs that are largely controlled by episodes of transgressive-regressive
events resulted in deposition of fine grained sediment and shale. Sienna
channel complex consists of unconfined channel system with clearly defined
development stages. The stages include amalgamated or stacked channels followed
by channel abandonment phases and local flooding events. The depositional
pattern continued through the Late Pliocene-Pleistocene. SimSat-P1 and
SimSat-P2 reservoirs are characterized by isolated sand bodies, most probably
relics of fan depositional setting. The depositional scenario that is largely
controlled by successive transgression and flooding events resulted in
deposition of interbedded, sheet-like, fine grained sediment and shale.