Abstract
Recent advances in computer sciences have resulted in a significant improvement in reservoir modeling, which is an important stage in studying and comprehending reservoir geometry and properties. It enables the collection of various types of activities such as seismic, geological, and geophysical aspects in a single container to facilitate the characterization of reservoir continuity and homogeneity. The main goal of this work is to build a three-dimensional reservoir model of the Abu Roash G reservoir in the Hamra oil field with enough detail to represent both vertical and lateral reservoir heterogeneity at the well, multi-well, and field scales. The Late Cenomanian Abu Roash G Member is the main reservoir in the Hamra oil field. It is composed mainly of shale, carbonate and some streaks of sandstone, these streaks are shaly in some parts. Conducting the 3D geostatic model begins with the interpretation of seismic data to detect reflectors and horizons, as well as fault picking to explain the structural framework and frequently delineate the container style with proposed limitations to construct the structural model. The lithology and physical properties of Abu Roash G reservoir rock, including total and effective porosity and fluid saturation, were determined using well log data from four wells in the Hamra field. The constructed 3D geological model of the Abu Roash G has showed that the petrophysical parameters are controlled by the facies distribution and structure elements, whereas properties are the central part to the northern side of the deltaic environment than the other sides of the same environment. The model will be useful in displaying the reservoir community and indicating prospective zones for enhancing the dynamic model to improve the behavior of the flow unit productivity, as well as, section of the best sites for the future drilling.
Highlights
The occurrence of hydrocarbons in the Egyptian western desert is closely related to the area's tectonic activities and stratigraphic history, which has created a series of reservoirs and seals
The current study aims to combine the various data available for better understanding the subsurface system and the character of the Late Cretaceous reservoirs in the Hamra oil field
The principal structure responsible for hydrocarbon entrapment in the study area was a structural high, which corresponds to the three-way dip closure of the East–West major normal fault and the Northeast-Southwest normal fault of Hamra oil field
Summary
The occurrence of hydrocarbons in the Egyptian western desert is closely related to the area's tectonic activities and stratigraphic history, which has created a series of reservoirs and seals. The majority of fields in the northern western desert are related to structures formed during the Late Cretaceous-Eocene period (Abu El Naga 1984). The majority of Egypt's sedimentary basins are in the northern Western Desert, such as the Matruh-Shushan, North Meleiha, Alamein, Abu Gharadig, Gindi, and Beni Suef basins. The Abu Gharadig Basin is nearly the largest basin in the northern Western Desert, with numerous oil and gas fields in its depo-center and troughs, including the Abu Gharadig field, North Abu Gharadig field, Badr El-Din (BED) lease, GPT field, Wadi field (WD 33), Asala platform, Diyur field, and Karama lease, Raham lease, and Hamra oil field (Fig. 1). The current study aims to combine the various data available for better understanding the subsurface system and the character of the Late Cretaceous reservoirs in the Hamra oil field. Geostatistical approaches play a vital role in this process. 3D numerical models are
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