The main objective of the present study aims to evaluate the different properties of the ‎Late Miocene Abu Madi Reservoir in West Al Khilala Field. The petrophysical evaluation of Abu ‎Madi Reservoir in W. Al Khilala-2 and W. Al Khilala-5 wells in the study area reveals distinctive ‎reservoir characteristics. In W. Al Khilala-2, a sandstone interval with hydrocarbon shows was ‎identified between depths of 9920 to 10090 FT.MD. It features a gross reservoir thickness of ‎‎170 FT and a net thickness of 114.5 FT. Effective porosity ranged from 15.4% to 26%, with a ‎shale content of approximately 14%. This consistent lithological homogeneity suggests favorable ‎reservoir quality.‎
Conversely, W. Al Khilala-5 exhibits a hydrocarbon-bearing interval, showcasing 58.5 FT ‎of gross sandstone thickness between depths of 10221.5 and 10280 FT.MD. The net pay ‎thickness is 23 FT., with an average effective porosity of 19.4% and water saturation ranging ‎from 39.1% to 73.5%. Notably, resistivity readings exhibit significant variation, forming a funnel ‎shape, while the shale content remains relatively low at about 11.3%.‎
For W. Al Khilala-2, the reservoir characterized by subfeldspathic arenite with variable ‎hydrocarbon and water saturation levels. In W. Al Khilala-5, sandstone predominance is ‎observed, albeit with decreased porosity due to the presence of siltstones and poorly sorted ‎sandstone facies. Petrographic analysis reveals significant detrital components such as quartz, ‎feldspar, glauconite, lithic fragments, micas, and heavy minerals. Authigenic components like ‎calcite, quartz overgrowths, kaolinite, siderite, chlorite, and illite contribute to pore space ‎alteration and porosity reduction.‎