Reservoir heterogeneity analysis and flow unit characteristics of the Upper Cretaceous Bahariya Formation in Salam Field, north Western Desert, Egypt

Yasser, Aya; Leila, Mahmoud; Bastawesy, Mohammed El; Mahmoudi, Ahmed El

doi:10.1007/s12517-021-07985-5

Cited by 26 publications

(3 citation statements)

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“…These directions are consistent with observed fault patterns reported in Qasr Field (Abuzaied et al, 2019). These trends also align with the main fault patterns in Shushan Basin which are trending ENE-WSW and WNW-ESE directions (Keeley et al, 1999;Shalaby et al, 2011;Yasser et al, 2021;Leila et al, 2022). Furthermore, Matruh and Shushan basins underwent Jurassic and Early Cretaceous expansions followed by Late Cretaceous to Early Tertiary inversions in the form of NE-SW-and NNE-SSW-oriented inversion anticlines and tilted fault blocks surrounded by WNW-ESE-and NW-SE-direction normal faults, which consider the primary structural traps in these basins (Shalaby et al, 2011;Hassan et al, 2022).…”

Section: 3interpretation Of In-situ Stress Anisotropysupporting

confidence: 87%

“…These basins were originated during the Triassic-Middle Jurassic rifting phase and opening of the Neotethys (Stampfli et al, 2001;Garfunkel, 2004). These basins contain potential siliciclastic and mixed carbonate-siliciclastic reservoirs in both the syn-rift Jurassic and post-rift Cretaceous and younger sediments (Keeley et al, 1990;Bosworth, 1994;Shalaby et al, 2011;Yasser et al, 2021;Leila et al, 2022). (Bayoumi, 1996).…”

Section: Introductionmentioning

confidence: 99%

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Analysis of the geomechanical properties of the Jurassic Khatatba reservoir in Shushan Basin, Egypt and its implications for wellbore stability assessment

Harby,

Abu-Hashish,

Leila

et al. 2024

Acta Geophys.

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A proper investigation of geomechanical properties of reservoir sediments allows accurate prediction of both magnitude and direction of different stress regimes which are crucial for hydrocarbon production and reservoir management. The syn-rift Jurassic facies host the main reservoir targets in the north Western Desert, Egypt which produces more than 50% of the country's daily oil production. However, a detailed assessment of the geomechanical behavior of the main Jurassic reservoirs has never been investigated. Thus, the present study integrates the available wireline log data in order to determine the geomechanical properties of the Middle Jurassic gas-bearing Khatatba sediments in Qasr Field, Shushan Basin, north Western Desert.Mechanical earth model (MEM) was constructed and formation microimager logs (FMI) were interpreted for the Qasr-5 well to investigate the geomechanical behavior and wellbore stability of the Lower Khatatba reservoir facies. The stress direction was determined from FMI by identifying drilling-induced fractures, breakout, and formation fractures. Resistive, conductive, and partially conductive fractures are oriented in NE-SW, ESE-WSW, NW-SE, NE-SW, and SW-NE directions coinciding with the Jurassic syn-rift structures. The ENE-WSW direction of breakout and minimum horizontal stress (SHmin) in Qasr-5 well are the same as that of the primary fault in the Shushan Basin contrasting with the NNW-SSE direction of maximum horizontal stress (SHmax) and induced fractures. Fracture analysis of Qasr-5 revealed that only two points in the well were affected by critical stress. Based on the interpreted geomechanical properties, optimal drilling conditions to ensure wellbore stability in Shushan Basin were proposed.

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Section: 3interpretation Of In-situ Stress Anisotropysupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Analysis of the geomechanical properties of the Jurassic Khatatba reservoir in Shushan Basin, Egypt and its implications for wellbore stability assessment

Harby,

Abu-Hashish,

Leila

et al. 2024

Acta Geophys.

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“…Figure 2: Generalized stratigraphic geological column for North Western Desert of Egypt[22], highlighted with the rift boundariesError! Reference source not found [23]…”

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confidence: 99%

Field, Western Desert, Egypt

Essa,

El-Hafez,

Salah

2023

Iraqi Journal of Science

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This study aims to overcome the unexpected hydrocarbon non-potentiality detected in the upper Alam El-Bueib (I to IIIE) and justify the hydrocarbon accumulation within Alam El-Bueib (IIIG) at the Emry oil field, also, it is important to highlight the importance of fault seal analysis and the impact of Matruh canyon as a seal. Seismic interpretation and 3D structural framework are carried out using the fault-seal analysis technique for fault no.1 (F1). To assess the fault zone's capacity to be defined as either seal or leakage. Litho-facies juxtaposition diagram (Allan diagram) and Shale Gouge Ratio (SGR) were generated. It is concluded that the possible reason for the dry reservoir of the upper part of Alam El Bueib (Alam El Bueib I to IIIE) due to the leakage of the fault (F1). On the other hand, the seal mechanism for Alam El Bueib IIIG is mainly related to increasing the thickness of the Matruh shale and Matruh Canyon act as a seal rock. SGR for Alam El Bueib IIIG is around 80%, which confirms the presence of the shale in Matruh Canyon is the reason for accumulating the hydrocarbon at Alam El Bueib IIIG.

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