Geophysical and hydrocarbon prospect evaluation of Nukhul Formation at Rabeh East oil field, Southern Gulf of Suez Basin, Egypt

Abstract

Nukhul Formation is one of the primary oil reservoirs in the Gulf of Suez Basin. Rabeh East is an oil producer field located at the southern border of the Gulf of Suez. The present work deals with the geophysical investigation of Nukhul Formation in Rabeh East field using seismic lines and well log data of four wells, namely RE-8, RE-22, RE-25 and Nageh-1. The interpreted seismic profiles display that the RE-8 Well is the only well drilled within the up-thrown side of a significant horst fault block bounded by two normal faults. However, the other wells penetrated the downthrown side. The qualitative interpretation of the well logging data for RE-8 Well delineated two intervals have good petrophysical parameters and ability to store and produce oil. These zones locate between depths 5411.5 and 5424 ft (zone I) and between 5451 and 5459.5 ft (zone II). The calculated petrophysical parameters for zone I display water saturation (22–44%), shale volume (10–23%), total porosity (18–23%), effective porosity (12–20%) and bulk volume of water (0.04–0.06). Zone II exhibits water saturation (13–45%), shale volume (10–30%), total porosity (18–24%), effective porosity (11–20%) and bulk volume of water (0.03–0.05). This analysis reflects excellent petrophysical characteristics for the sandstones of Nukhul Formation in Rabeh East oil field for producing oil if the wells drilled in a suitable structural closure.

Assessment of the petrophysical properties and hydrocarbon potential of the Lower Miocene Nukhul Formation in the Abu Rudeis-Sidri Field, Gulf of Suez Basin, Egypt

“…The evaluation of the hydrocarbon potential of the Nukhul Formation in the Abu Rudies-Sidri Field based on well log interpretation shows that this formation is a good oil reservoir, as also observed by Temraz and Dypvik (2018). According to Sarhan (2021), the Nukhul Formation has excellent petrophysical parameters in other fields too, particularly on the southern side of the Gulf of Suez (i.e., Rabeh East oil field), and its success depends on whether the drilled well penetrates a suitable structural closure. The identified productive reflector of Nukhul Formation has been correlated using well log data.…”

Reservoir characterization of the middle Miocene Kareem sandstones, Southern Gulf of Suez Basin, Egypt

“…The GOSB is a part of the Red Sea rift system, which was formed when the Arabian and African plates separated during the Late Oligocene to Early Miocene (Sarhan et al 2014;Sarhan 2021a;Radwan and Sen 2021a). The rift is a 300-km-long depression that runs along the NW-SE direction (Alsharhan 2003;Radwan and Sen 2021a-d).…”

Seismic attributes and spectral decomposition-based inverted porosity-constrained simulations for appraisal of shallow-marine lower-Cretaceous sequences of Miano gas field, Southern Pakistan

“…A group of researchers has recently applied various geophysical reservoir mapping and imaging techniques to the diversity of structural and stratigraphic traps [ 18 , [37] , [38] , [39] , [40] , [41] , [42] , [43] ]. They have relied on bandlimited seismic attributes and innovative reservoir geophysical modelling techniques.…”