Analyzing of Formation Evaluation of the Unconventional Upper-Safa Formation, Western Desert, Egypt

Unconventional reservoirs can add huge amounts of additional energy to our world resources bases like organic shale in terms of Shale gas, shale oil, tight gas and coal-bed methane. These reservoirs can transform the world global energy market through advances in reservoir characterization, drilling, and completion technologies. Reservoir characterization and properties have great influences on the exploration and development processes, it is not through a single discipline that can provide a fulfill description of the reservoir characteristics especially for unconventional reservoirs. Moreover, unconventional sources can be defined by their difference of intrinsic of their geological sittings, origins, and tapping mechanisms, thus having different methodologies for exploration, production, and development methods. Therefore, it is very important to well express and identify the necessary parameters for unconventional characterization of these reservoirs for defining reservoir rock and fluid properties in terms of total organic carbon content, gas adsorption, level of maturity, grains surface roughness, original fluids in place, and etc. Hence there are many developed correlations and methods to get these parameters that can define each one of them, but most of them are not correlated with each other. According to the analysis of the case study, Upper-Safa formation which is considered as a shale source rock of hydrocarbon gases can be considered as a shale gas unconventional resource play through the analysis of its total organic carbon content values range between 2% to 3% by using different methods and the determination of the total gas in place, after considering both of free gas and adsorbed gas in place.