3D structural modeling of the Upper Bahariya Member in Abu Gharadig oil and gas field, North Western Desert, Egypt

Abdelmaksoud, Ahmed; Ewida, Hatem Farouk; El-Habaak, Galal; Amin, Ahmed T.

doi:10.1016/j.jafrearsci.2018.09.022

Cited by 26 publications

(5 citation statements)

References 25 publications

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“…Throughout the construction of the structural model, we used the formation tops acquired from the drilled wells in the research region, in conjunction with the depth-structure maps, to oversee and fine-tune the procedure. The basic goal of the 3D structural modeling www.nature.com/scientificreports/ is to understand the geological structure in three dimensions 49,50 . The key components required to develop a structural model are interpreting faults and horizons 40 .…”

Section: Reservoir Modelingmentioning

confidence: 99%

3D geological and petrophysical modeling of Alam El-Bueib Formation using well logs and seismic data in Matruh Field, northwestern Egypt

Ali,

Deaf,

Mostafa

2024

Sci Rep

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There are several productive petroleum fields in the North Western Desert (WD) of Egypt, which received extensive investigations regarding their petroleum potential. However, a few studies tackled the Matruh Oil Field, which contains the oil prolific Early Cretaceous Alam El-Bueib Formation (AEB Fm) reservoir. The reservoir intervals of the AEB Fm show substantial lithological variations across the basin. Therefore, it is necessary to analyze the vertical and lateral distributions in terms of their lithological and petrophysical properties. To achieve this objective, wireline logs of four wells and 20-2D seismic lines were used to construct a depth-structure contour map for the studied part of the field. This map was used to build the field’s structure model and to identify the fault patterns in the basin through several seismic lines. Analyses of well logs data and lithology were used to estimate the petrophysical properties of AEB sandstone units AEB-1, AEB-3A, AEB-3C, and AEB-6. Results show that the AEB-6 Unit is the most promising hydrocarbon-bearing unit. It has a net pay of 20–160 feet, a shale volume of 5–20%, an effective porosity of 14–20%, and a hydrocarbon saturation of 70–88%. The structure-depth maps indicate a number of normal faults with two principal NE-SW and NW–SE trends, which probably act as structural traps in the Matruh Oil Field. The constructed structure-depth maps and calculated petrophysical parameters were used to build a three-dimensional reservoir model. A blind well was used to validate the accuracy and reliability of the facies, porosity, and saturation models for the AEB Fm units, ensuring a good match between log-derived data and built models. The AEB Fm shows regional heterogeneous variations in its petrophysical characteristics. It exhibits unconventional reservoir characteristics in a N–S direction and conventional reservoir characteristics in an E–W direction. This observed heterogeneity shows the need to carry out further investigations to comprehensively assess the hydrocarbon potential of AEB Fm in different areas of the Matruh Basin.

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Section: Reservoir Modelingmentioning

confidence: 99%

3D geological and petrophysical modeling of Alam El-Bueib Formation using well logs and seismic data in Matruh Field, northwestern Egypt

Ali,

Deaf,

Mostafa

2024

Sci Rep

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“…Generally, the Late Cretaceous stratigraphic succession of this region has been divided in three formations with the Bahariya Formation at the bottom followed by the Abu-Roash Formation in the middle and either the Apollonia or Khoman Formation at the top, whenever Khoman Formation is missing. The mean thicknesses of the Upper Cretaceous successions in the basin are ~2100 m [25,26]. The Abu-Roash Formation is primarily composed of alternating clastics and carbonates that represent regressive and transgressive phases, respectively.…”

Section: Stratigraphic Frameworkmentioning

confidence: 99%

“…According to Wali and Ayyad [43], the E, F, and G Members of the Abu Roash Formation have organic-rich horizons and are considered to have fair to good source potential for oil generation. The "F" Member has a high organic content (regionally 1-5%) and is considered to be the main source rock for the Abu Roash oil in the BED-3 and BED-15 Fields [4,16,25,43]. The main Abu Roash reservoir in the current study is a NW-SE tidal-channel sandstone in Abu Roash "C" with a net pay thickness of up to 11.2 m in BED-3 and a penetrated sand thickness of 5-21 m in the BED-15 field with good reservoir quality.…”

Section: Basin Evolution and Petroleum Systemsmentioning

confidence: 99%

Improving Hydrocarbon Prospect Evaluation at Badr El Din-3 and Badr El Din-15 Oil Fields by Integrating 3D Structural Modeling and Petrophysical Analysis for Abu-Gharadig Basin, North of Western Desert, Egypt

et al. 2022

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The BED-3 and BED-15 oil fields are situated in the northwestern portion of the Abu-Gharadig sedimentary basin. The Basin is an E–W trending intracratonic rift basin and ranges in age between the Late Jurassic and Early Cretaceous. Significant extension events, followed by subsidence, took place throughout the Middle Jurassic and continued to the Cretaceous. The relative movement of Africa toward Laurasia in the Jurassic changed from eastward to westward between the Early Cretaceous and the Santonian. Therefore, a compressive force due to the change in direction affected the African plate and gave rise to the reversal of basins (such as the Abu-Gharadig sedimentary basin). Inverted anticlines are important structural traps for hydrocarbons that were formed by the compressional forces acting on the Abu-Gharadig sedimentary basin. This study primarily focuses on understanding the BED-3 and BED-15 fileds' structural style, in addition to the subsurface structure that has participated in the petroleum accumulation in the Abu-Roash C Member (Abu-Roash Formation) in the oil fields, in order to maximize oil recovery in these two fields through new wells. The aim of this study was achieved based on information from 30 two-dimensional seismic profiles integrated with well log data from nine boreholes. The Abu-Roash C reservoir represented by two horizons, in addition to minor and major faults, are recognized and marked. Structural trend in the study area ranges from ESE–WNW to NW–SE, and structures consist of folds and faults, forming horsts, grabens, and half-grabens, all of which are favorable for hydrocarbon accumulation. The petrophysical analysis performed on the BED3-8 well shows approximately 87.4% hydrocarbon saturation within the reservoir rock, while the hydrocarbon saturation of the available wells in BED-15 is calculated to vary between 56.1 and 78.8%. Hence, this study suggests that BED-3 and BED-15 oilfields have an excellent chance of producing hydrocarbons.

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“…In general, the upper cretaceous succession of the North-Western Desert has been subdivided into three lithostratigraphic formations: Bahariya, Abu Roash, and Khoman or Apollonia Formation at the top, if the Khoman Formation is missing. In the Abu Gharadig basin, the average thickness of the Upper Cretaceous succession is nearly 2100m (Schlumberger, 1995;Abdelmaksoud et al, 2019). The Abu Roash Formation is primarily made up of clastics and carbonates that alternate between transgressive and regressive phases.…”

Section: Stratigraphic Frameworkmentioning

confidence: 99%

Petrophysical Evaluation and Hydrocarbon Potentialities of the Abu Roash C Member of the Abu Roash Formation, Badr El Din-3 and Badr El Din-15 Oil Fields, Abu Gharadig Basin, Northern Western Desert, Egypt

Taha

Abdelhafeez²,

El-Hady³

et al. 2022

Delta Journal of Science

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WSW-oriented, and ranges in age between the Late Jurassic and EarlyCretaceous. The presence of sandstone streaks in the Abu Roash "C" Member of the Abu-Roash Formation, which has a relatively high resistivity signature in the electric logs in most wells within these fields, is the primary reason for investigating its petrophysical parameters in order to describe the main characteristics of these sands and to assess their ability for hydrocarbon accumulation as well as production. The aim of this study was completed based on information from well log data from nine boreholes. The petrophysical evaluation of the BED3-8 well reveals approximately 87.4% oil saturation within the reservoir rock, whereas the hydrocarbon saturation of the other wells in BED-15 is estimated to vary between 56.1 and 78.8%. As a result, this study reveals that the BED-3 and BED-15 oil fields have a high probability of producing hydrocarbons.

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3D structural modeling of the Upper Bahariya Member in Abu Gharadig oil and gas field, North Western Desert, Egypt

Cited by 26 publications

References 25 publications

3D geological and petrophysical modeling of Alam El-Bueib Formation using well logs and seismic data in Matruh Field, northwestern Egypt

3D geological and petrophysical modeling of Alam El-Bueib Formation using well logs and seismic data in Matruh Field, northwestern Egypt

Improving Hydrocarbon Prospect Evaluation at Badr El Din-3 and Badr El Din-15 Oil Fields by Integrating 3D Structural Modeling and Petrophysical Analysis for Abu-Gharadig Basin, North of Western Desert, Egypt

Petrophysical Evaluation and Hydrocarbon Potentialities of the Abu Roash C Member of the Abu Roash Formation, Badr El Din-3 and Badr El Din-15 Oil Fields, Abu Gharadig Basin, Northern Western Desert, Egypt

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