Simulation of the mulltizones clastic reservoir: A case study of Upper Qishn Clastic Member, Masila Basin–Yemen

The Upper Qishn Clastic Member is one of the main oil-bearing reservoirs that are located at Masila Basin–Yemen. It produces oil from many zones with different reservoir properties. The aim of this study is to simulate and model the Qishn sandstone reservoir to provide more understanding of its properties. The available, core plugs, petrophysical, PVT, pressure and production datasets, as well as the seismic structural and geologic information, are all integrated and used in the simulation process. Eclipse simulator was used as a powerful tool for reservoir modeling. A simplified approach based on a pseudo steady-state productivity index and a material balance relationship between the aquifer pressure and the cumulative influx, is applied.