Sandstone surface samples were collected from Quseir Fm., a member of Nubian Sandstone at Gebel el-Silsila and subjected to petrographical investigation using polarizing microscope. X-Ray diffraction was carried out to determine mineralogy. Scanning electron microscope also was utilized for the morphological characterization of the rock components. This sandstone petrofacies is mainly quartz arenite. The depositional environment of the studied sandstones is fluvial to fluvial-marine, and they suffered post-depositional alterations. Alterations include diagenesis (clay infiltration and original detrital grains disintegration), weathering, deterioration phenomena as erosion, voids existence due to dissolution and absence of bound materials. Mineralogical characterization indicated that quartz is the main constituent of sandstone in addition to kaolinite clay mineral as a cementing material. Petrophysically, the studied samples subjected to porosity and permeability measurements. The measurements showed that the samples are highly porous and permeable. Permeability–porosity relation displayed two groups (A and B). Although porosity values are close to great extent, permeability is quite different for the two groups due to the different distributions of pore throats, perhaps as a result of uneven clay distribution within the two groups of samples. Many capillary pressure-derived parameters were calculated using experimental correlations. The results confirmed the presence of two flow groups, macroport group (group A) and megaport group (group B) that is the best in terms of reservoir quality. The two groups reflect the excellent properties for the studied potential reservoir.

中文翻译：

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使用毛细管压力衍生参数的实验相关性，检测埃及古贝尔埃尔-西西拉的古塞米尔组（下坎帕尼）的流动单元作为潜在储层

砂岩表面样品是从位于Gebel el-Silsila的努比亚砂岩成员Quseir Fm。收集的，并使用偏光显微镜进行了岩石学研究。进行X射线衍射以确定矿物学。扫描电子显微镜也用于岩石成分的形态表征。这种砂岩岩相主要是石英砂岩。所研究的砂岩的沉积环境对河流相来说是河流相和海洋相，并且它们经历了沉积后的变化。改变包括成岩作用（粘土渗透和原始碎屑的崩解），风化，侵蚀现象的恶化，由于溶解和不存在结合材料而导致的空洞的存在。矿物学特征表明，除了高岭石粘土矿物作为胶结材料外，石英是砂岩的主要成分。在岩石物理上，对所研究的样品进行了孔隙度和渗透率测量。测量结果表明样品是高度多孔和可渗透的。渗透率-孔隙率关系显示两组（A和B）。尽管孔隙率值接近于很大程度，但由于孔喉的分布不同，两组的渗透率差异很大，这可能是由于两组样品中粘土分布不均匀所致。使用实验相关性计算了许多毛细管压力衍生参数。结果确认存在两个流组，就储层质量而言，宏港组（A组）和巨型港组（B组）是最好的。两组反映了所研究的潜在储层的优异性能。