The quality of a hydrocarbon reservoir is strongly controlled by the depositional and diagenetic facies nature of the given rock. Therefore, building a precise geological/depositional model of the reservoir rock is critical to reducing risks while exploring for petroleum. Ultimate reservoir characterization for constructing an adequate geological model is still challenging due to the in general insufficiency of data; particularly integrating them through combined approaches. In this paper, we integrated seismic geomorphology, sequence stratigraphy, and sedimentology, to efficiently characterize the Upper Miocene, incised-valley fill, Abu Madi Formation at South Mansoura Area (Onshore Nile Delta, Egypt). Abu Madi Formation, in the study area, is a SW-NE trending reservoir fairway consisting of alternative sequences of shales and channel-fill sandstones, of the Messinian age, that were built as a result of the River Nile sediment supply upon the Messinian Salinity Crisis. Hence, it comprises a range of continental to coastal depositional facies. We utilized dataset including seismic data, complete set of well logs, and core samples. We performed seismic attribute analysis, particularly spectral decomposition, over stratal slices to outline the geometry of the incised-valley fill. Moreover, well log analysis was done to distinguish different facies and lithofacies associations, and define their paleo-depositional environments; a preceding further look was given to the well log-based sequence stratigraphic setting as well. Furthermore, mineralogical composition and post-depositional diagenesis were identified performing petrographical analysis of some thin sections adopted from the core samples. A linkage between such approaches, performed in this study, and their impact on reservoir quality determination was aimed to shed light on a successful integrated reservoir characterization, capable of giving a robust insight into the depositional facies, and the associated petroleum potential. The results show that MSC Abu Madi Formation constitutes a third-order depositional sequence of fluvial to estuarine units, infilling the Eonile-canyon, with five sedimentary facies associations; overbank mud, fluvial channel complex, estuarine mud, tidal channels, and tidal bars; trending SW-NE with a Y-shape channel geometry. The fluvial facies association (zone 1 and 3) enriches coarse-grained sandstones, deposited in subaerial setting, with significantly higher reservoir quality, acting as the best reservoir facies of the area. Although the dissolution of detrital components, mainly feldspars, enhanced a secondary porosity, improving reservoir quality of MSC Abu Madi sediments, continental fluvial channel facies represent the main fluid flow conduits, where marine influence is limited.

碳氢化合物储层的质量受到给定岩石的沉积和成岩相性质的强烈控制。因此，建立精确的储层岩石地质/沉积模型对于降低勘探石油的风险至关重要。由于数据普遍不足，用于构造适当地质模型的最终储层表征仍具有挑战性。特别是通过组合方法将它们整合 在本文中，我们综合了地震地貌学，层序地层学和沉积学，以有效地表征南曼苏拉地区（埃及尼罗河三角洲）的上中新世，切谷填充，阿布马迪组。在研究区的阿布马迪组，是西南偏北趋势的水库航道，由墨西尼时代的页岩和河道填充砂岩的交替序列组成，这些序列是由于墨西尼盐度危机时尼罗河沉积物的供应而建立的。因此，它包括一系列大陆到沿海沉积相。我们利用了包括地震数据，完整的测井记录和岩心样本在内的数据集。我们对地层切片进行了地震属性分析，尤其是频谱分解，以勾勒出切开的谷地填充物的几何形状。此外，还进行了测井分析，以区分不同的相和岩相联系，并定义它们的古沉积环境。之前还对基于测井的层序地层学设置做了进一步的研究。此外，通过对岩心样品采用的一些薄片进行岩相分析，确定了矿物学组成和沉积后成岩作用。在这项研究中进行的这些方法之间的联系，以及它们对储层质量确定的影响，旨在揭示成功的综合储层特征，能够对沉积相和相关的石油潜力提供有力的见解。结果表明，MSC Abu Madi组构成河流至河口单元的三阶沉积层序，充满了Eonile峡谷，具有五个沉积相联系。滩涂泥浆，河道复合体，河口泥浆，潮汐通道和潮汐带；具有Y形通道几何形状的SW-NE趋势。河流相联合（1区和3区）丰富了沉积在地下环境中的粗粒砂岩，储层质量明显更高，是该地区最好的储层相。尽管碎屑成分（主要是长石）的溶解增强了次生孔隙度，改善了MSC Abu Madi沉积物的储层质量，但大陆河流相代表了主要的流体流动管道，但海洋影响有限。