The current work deals with comparative study of reservoirs potential of best exposed Cretaceous–Paleocene successions in Nizampur Basin, Khyber Pakhtunkhwa, Pakistan. Outcrop fractures data were collected, integrated and compared with the petrography, scanning electron microscope (SEM) and energy dispersive X-ray analysis (EDX) data of selected samples. These fractures data include orientation, attitude (Dip/Strike), fracture density (F.D), frequency and their distribution. The methodology adopted comprises of fracture data by scanline circle inventory method (CIM) and statistical calculations for porosity and permeability by Monte Carlo equation. The data were collected from three stations with 119 circles inventories. Moreover, the natural fracture reservoir system (NFR) was used to classify the reservoir potential based on calculated the results. The analyzed formations show intermediate to low porosity and permeability and classified as Type-2 or Types-3 established on the data from petrography/SEM/EDX and outcrop fractures data, respectively. The results further displays that, the fractures provide essential permeability only in case of Types-2 while in case of Type-3 the fractures provide a permeability assistance. The limestone interbeded with glauconitic sandstone in the lower most part of the Lumshiwal Formation may act as prolific reservoir intervals sealed by sandy carbonaceous shale within this unit. Overall, the depositional environment and digenetic processes mainly controlled the reservoir potential but in general, the Cretaceous–Paleocene successions may be considered as good reservoirs for holding and transmitting hydrocarbons.

目前的工作是比较研究巴基斯坦开伯尔普赫图赫瓦省尼赞普尔盆地白垩纪-古新世最佳出露层系的储层潜力。收集、整合露头裂缝数据，并与选定样品的岩相学、扫描电子显微镜 (SEM) 和能量色散 X 射线分析 (EDX) 数据进行比较。这些裂缝数据包括方向、姿态（Dip/Strike）、裂缝密度（FD）、频率及其分布。采用的方法包括扫描线循环库存法（CIM）的裂缝数据和蒙特卡洛方程的孔隙度和渗透率统计计算。数据是从三个站点收集的，共有 119 个循环库存。而且，根据计算结果，使用天然裂缝储层系统（NFR）对储层潜力进行分类。分析的地层显示出中低孔隙度和渗透率，并根据岩相学/SEM/EDX 数据和露头裂缝数据分别确定为 Type-2 或 Type-3。结果进一步表明，裂缝仅在类型 2 的情况下提供必要的渗透率，而在类型 3 的情况下，裂缝提供渗透率辅助。Lumshiwal 组最下部的石灰岩与海绿石砂岩互层，可作为该单元内被砂质碳质页岩封闭的多产储层层段。总体而言，沉积环境和成岩过程主要控制储层潜力，但总体而言，