Reservoir properties and petrophysical analysis of the Late Miocene Abu Madi Formation in the Abu Qir Bay Area, West Nile Delta, Egypt

Abstract

The Abu Qir Bay area is on the offshore western part of the Nile Delta. It is divided into three fields namely: North Abu Qir, Abu Qir, and West Abu Qir. The main reservoir in the Abu Qir Bay area is Abu Madi Formation, which represents the Miocene rocks. The current uses conducting advanced conventional petrophysical techniques for determining the reservoir properties of the Abu Madi Formation. The wireline log data is commencing four wells drilled in the study area namely: North Abu Qir-7x, West Abu Qir-1x, Abu Qir-1x, and Abu Qir-13x). The interpreted lithologic data of the studied wire-line logs shows that the Abu Madi Formation’s main lithology consists of sandstone interbedded with some amounts of shale and thin lamina of limestone and anhydrite. Based on the interpreted well logging records, the Abu Madi Formation can be subdivided into three members: The Upper, Middle, and Lower Abu Madi members. The main target is the Upper Abu Madi members with shale volume varying from 8 to 12% with an average of 10%. The Middle Abu Madi member which is considered the second target has a shale volume ranging from 9.5 to 13.5% with an average of 11.5%. The thickness of the Abu Madi Formation ranges in the four drilled wells varies between 67.61 and 167.63 m with an average of 117 m. The petrophysical evaluation displays two important pay zones, and they belong to the Upper and the Middle Abu Madi members. The average porosity and hydrocarbon saturation values of both members indicate that Abu Madi is a very good reservoir. The southwestern area near West Abu Qir-1x well was found a good place for any upcoming appraisal, particularly for the upper Abu Madi reservoir future development.