INTEGRATED GEOLOGICAL INTERPRETATION FOR MODELING THE COMPLICATED RESERVOIRS; AN EXAMPLE FROM UPPER RUDEIS AND KAREEM RESERVOIRS, AMAL FIELD, SOUTHERN GULF OF SUEZ RIFT, EGYPT

Abstract

This work is an attempt to convey the significant role of integrated geological interpretation techniques for constructing robust geological model in one of the most complicated and poorly seismically imaged reservoirs in the Southern Gulf of Suez rift basin. An Example has been taken from syn-rift Langhian and Early Serravallian reservoirs that are represented by Upper Rudeis and Kareem stratigraphic sequences. The bad seismic quality is the result of big thickness of Late Miocene evaporites. This hinders the construction of a reliable subsurface geological model of sub-salt reservoirs. As well, many geological and engineering challenges have been recognized particularly in these reservoirs. The 3D geological modeling techniques have been applied after the conventional geological interpretation to acquire more geological reasonability and geometric validity of the study reservoirs. The concerned section of Amal field has been subdivided into four different reservoirs; two of Upper Rudeis Member (UR2 & UR1) and two of Kareem Formation (Markha & Shagar). Only, the Upper Rudeis unit-one (UR1) records noticeable influence of syn-depositional fault movements on the thickness and facies pattern distribution. All these reservoirs exhibit different reservoirs connectivity that in turn affects the production performance behavior through the life of the field. This study could hold the key for the future field development plan and further exploration in and around of the main producing zones.