Reservoir rock facies modelling helps in determining the degree of reservoir variability for enhanced management of the heterologous facies’ reservoirs, both at borehole scale and more regionally at seismic scale. The Pliocene Offshore Sequoia Gas Field is located near the boundary between the Rosetta Concession and the West Delta Deep Marine Concession (WDDM) on the western side of the Nile Delta. It is characterised by canyon systems of complex turbidite channel-levee deposits that are multi-stacked. In order to create various depositional facies that are compatible with a deep marine environment, an advanced facies model was built from the combination of the seismic, core, and formation micro imager (FMI). Sandstones (laminated and massive), shale (laminated and massive mud-rock), silt, and thin sandstone beds were identified as four major facies. In the Sequoia field area, the El-Wastani Formation is known as a heterogeneous sequence of sandstones and mudstones arranged into a broad upward-fining succession. High-quality, blocky sands exist at the base, while the upper portion is characterised primarily by isolated sand bodies intercalated with mudstones in the presence of some thin-bedded sands (their thickness less than one meter).

储层岩石相建模有助于确定储层可变性的程度，以便在钻孔尺度和更区域性的地震尺度上加强对异源相储层的管理。上新世海上红杉气田位于尼罗河三角洲西侧的罗塞塔租界和西三角洲深海租界 (WDDM) 之间的边界附近。它的特点是复杂的浊积河道堤坝沉积的峡谷系统是多叠的。为了创建与深海环境兼容的各种沉积相，结合地震、岩心和地层显微成像仪 (FMI) 建立了先进的相模型。砂岩（层状和块状）、页岩（层状和块状泥岩）、粉砂、薄砂岩层被确定为四大主要相。在 Sequoia 油田地区，El-Wastani 组被称为砂岩和泥岩的异质序列，排列成一个广泛的向上细化序列。底部为优质块状砂，上部主要为孤立砂体，夹有泥岩，夹有一些薄层砂（厚度小于一米）。