Evaluation Of Reservoir Properties And Subsurface Structural Interpretation Of Miano Field, Central Indus Basin Pakistan

Abstract

The current study's goal is to use seismic and well data to better understand the underlying geology and hydrocarbon potential of the Miano region. On eight seismic lines, subsurface structural interpretation has been carried out. Well-to-seismic tie distinguished three distinct horizons, namely Habib Rahi (Eocene), Upper Goru Formation (Cretaceous), and Lower Goru Formation (Cretaceous). Normal faults are interpreted which are forming horst and graben structures as a result of extensional tectonic settings. Petrophysical study was carried out on the well logs of Miano-02. Based on wireline log data, one hydrocarbon bearing zones was found in the Lower Goru Formation. Various Petrophysical parameters, such as we examine reservoir parameters, the amount of shale, average and effective porosities, and hydrocarbon saturation were computed. The thickness of hydrocarbon bearing zones is 3m (Miano-02) with calculated shale volumes of 7.483% The effective porosities and hydrocarbon saturation of the corresponding zones are determined to be 10.556% (Miano-02), and 37.073%. Lastly, pore pressure prediction within the Lower Goru Formation has been carried out using the Eaton’s method to identify the abnormal pressure intervals. The evaluation of the pore pressure shows that there is overpressure in the top part (2226-3000m) of the Lower Goru Formation, which may make drilling difficult. The lowest half of the formation, on the other hand, possesses drillable pressure conditions.