Petrophysical analysis and hydrocarbon potentialities of the untested Middle Miocene Sidri and Baba sandstone of Belayim Formation, Badri field, Gulf of Suez, Egypt

Attia, M.M.; Abudeif, A.M.; Radwan, Ahmed E.

doi:10.1016/j.jafrearsci.2015.05.020

Cited by 47 publications

(34 citation statements)

References 5 publications

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“…The stratigraphic units in the Gulf of Suez can be subdivided into three mega sediment groups (Fig. 2): (1) the Cambrian-Oligocene pre-rift sequence; (2) the Oligocene-Miocene syn-rift sequence (the core of the present study), which comprises the main hydrocarbon reservoirs as well as seals in the Gulf of Suez (Nukhul, Rudies, Kareem, Belayim, South Gharib, Zeit, and post-Zeit seals and reservoir rocks); and (3) the post-rift post-Miocene mega-sequence (Bosworth and McClay 2001;Attia et al 2015;Nabawy and El Sharawy 2015;Abudeif et al 2016aAbudeif et al , 2016bAbudeif et al , 2018; Radwan Egypt (EGPC 1996). et al 2019b, 2020aKassem et al 2021).…”

Section: Lithostratigraphy and Geologic Settingmentioning

confidence: 96%

“…The Middle to Upper Serravallian Belayim Formation, which is the most important syn-rift oil reservoirs, is unconformably underlain by the Kareem Formation and its contact with the overlying South Gharib Formation is a disconformity. The Belayim Formation shows very good hydrocarbon accumulations within its sandstone interbeds (Richardson and Arthur 1988;EGPC 1996;Al-sharhan 2003;Attia et al 2015;Nabawy and Barakat 2017;Radwan and Sen 2020). The Belayim Formation is composed of four members, the Hammam Faraun (top of Belayim Formation), Feiran, Sidri, and Baba (base of Belayim Formation).…”

Section: Lithostratigraphy and Geologic Settingmentioning

confidence: 99%

“…. Syn-rift stratigraphic column of El Morgan oil field shows the geologic setting of the studied wells (Hermina et al 1989;Attia et al 2015;Abudeif et al 2016aAbudeif et al , b, 2018.…”

Section: Lithostratigraphy and Geologic Settingmentioning

confidence: 99%

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Implementation of Rock Typing on Waterflooding Process During Secondary Recovery in Oil Reservoirs: A Case Study, El Morgan Oil Field, Gulf of Suez, Egypt

et al. 2021

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Waterflooding is one of the most common secondary recovery methods in the oil and gas industry. Globally, this process sometimes suffers a technical failure and inefficiency. Therefore, a better understanding of geology, reservoir characteristics, rock typing and discrimination, hydraulic flow units, and production data is essential to analyze reasons and mechanisms of water injection failure in the injection wells. Water injection failure was reported in the Middle Miocene Hammam Faraun reservoir at El Morgan oil field in the Gulf of Suez, where two wells have been selected as injector’s wells. In the first well (A1), the efficiency of injection was not good, whereas in the other analog A2 well good efficiency was assigned. Therefore, it is required to assess the injection loss in the low efficiency well, where all aspects of the geological, reservoir and production data of the studied wells were integrated to get a complete vision for the reasons of injection failure. The available data include core analysis data (vertical and horizontal permeabilities, helium porosity, bulk density, and water and oil saturations), petrographical studies injection and reservoir water chemistry, reservoir geology, production, and injection history. The quality of the data was examined and a set of reliable X–Y plots between the available data were introduced and the reservoir quality in both wells was estimated using reservoir quality index, normalized porosity index, and flow zone indicator. Integration and processing of the core and reservoir engineering data indicate that heterogeneity of the studied sequence was the main reason for the waterflooding inefficiency at the El Morgan A1 well. The best reservoir quality was assigned to the topmost part of the reservoir, which caused disturbance of the flow regime of reservoir fluids. Therefore, it is clearly indicated that rock typing and inadequate injection perforation strategy that has not been aligned with accurate hydraulic flow units are the key control parameters in the waterflooding efficiency.

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Section: Lithostratigraphy and Geologic Settingmentioning

confidence: 96%

Section: Lithostratigraphy and Geologic Settingmentioning

confidence: 99%

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Implementation of Rock Typing on Waterflooding Process During Secondary Recovery in Oil Reservoirs: A Case Study, El Morgan Oil Field, Gulf of Suez, Egypt

et al. 2021

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“…Different parts of the Gulf of Suez have different geological histories. The succession, facies changes and the relationships of the different blocks that comprise the Gulf of Suez are quite variable so that no single area in the Gulf is found to be wholly representative of the stratigraphy or the structure of the entire region (Said 1962;Steen and Helmy 1982 The generalised litho-stratigraphic column within the North Ramadan oil field shown in (Figure 2), for which three depositional phases are generally assumed (Attia et al 2015).…”

Section: Geologic Settingmentioning

confidence: 99%

“…It is an intra-continental, late Oligocene rifted basin but was originally formed during the early Palaeozoic as a narrow embayment of the Tethys that was intensively rejuvenated during the rifting phase of the great East African rift system in the Palaeocene. (Abudeif et al, 2016;Bosworth and McClay 2001;Lashin and Abd El-Aal 2004;D'Agosto et al 2008;Abd El-Naby et al 2010;Attia et al 2015) It can be described as a rejuvenated, slightly accurate NW-SE trending rifted graben, which separates the shield of central Sinai from that of the Eastern Desert of Egypt and extends from latitude 27°15ʹ to 30°N and 32°10ʹ to 34°E embracing a total length of 350 km with average width ranging between 30 and 80 km, and average water depth of 160 ft.…”

Section: Introductionmentioning

confidence: 99%

Improvement of Gulf of Suez subsurface image under the salt layers through re-processing of seismic data- a case study

Fattah

Diab²,

Younes

et al. 2020

NRIAG Journal of Astronomy and Geophysics

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Advanced technology in processing the old seismic data in the Gulf of Suez (G.O.S) has been used and applied using new parameters to emphasise the optimisation of geological structures and stratigraphic units as much as possible. The primary reflections in Gulf of Suez have low frequency while multiple reflections have higher frequency where there is a high reflection contrast in the shallow section represented by Zeit Formation due to alternation of shale and anhydrite that generates a lot of multiple reflections. The deeper formations will be affected by low-frequency reflections resulted from the incident energy itself with the common attenuation parameters such as transmission loss, adsorption, and spherical spreading of waves. Otherwise, the data in the Gulf of Suez suffer from a lot of loss mechanism from the salt of South Gharib Formation and anhydrite of Zeit Formation. In this study, new software are adapted to apply new technology in processing and analysis of seismic data such as VISTA 11 software from GEDCO company. After a lot of iterations of all seismic data parameters, seismic flows and parameters have been chosen to retain the primary frequency contents and relative amplitude while suppressing multiples energy. The reprocessing produced seismic sections with the increased temporal and spatial seismic resolution, facilitating more accurate interpretation of the data. Enhanced imaging of both the salt structures and the subsalt sequence has been achieved, which in turn leads to a more and better understanding of salt deformation and improve the mapping of structural subdivisions within the study area.

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Rock typing of the Miocene Hammam Faraun alluvial fan delta sandstone reservoir using well logs, nuclear magnetic resonance, artificial neural networks, and core analysis, Gulf of Suez, Egypt

Ahmed¹,

el‐Din

Radwan

et al. 2023

Geological Journal

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The application of integrated methods to evaluate the quality of reservoir rocks is becoming crucial in petroleum geoscience. The Miocene reservoirs in the El Morgan Oil Field consist mainly of sandstones with interbedded dolomitic silts and shales. Based on the pore scale, the sandstone reservoir of Hammam Faraun Member is a heterogeneous reservoir, and this is the main challenge in this oil field that affects both production and exploration activities. In this article, we have integrated the well logs, nuclear magnetic resonance (NMR), artificial neural networks (ANN) and core analysis to better understand these alluvial fan sandstone reservoirs. The petrographic description indicates arkosic sandstone with varied pore types, texture, cement, and sorting. The studied flow and storage capacity for well#1, indicate four rock types with 24 flow units and eleven barriers, which indicates a high degree of heterogeneity. The artificial neural networks (ANN), that is, the K.mod module, were used to enhance the prediction quality and forecast of FZI in the uncored intervals, where the NMR‐calculated permeability acts as a calibration point for the FZI model validation. This study reveals that the FZI is controlled by permeability, which is mostly influenced by pore throat size. The NMR log showed varied free fluid volume with varied capillaries, clay‐bound volumes and minor streaks of tar along the studied unit. The reservoir pores in the study area are residual pores that have undergone mechanical compaction and cementation that reduce porosities, while dissolution enhances the sandstone porosities. Porosity and permeability were significantly reduced in the presence of clays and carbonate minerals, which indicates poor reservoir quality zones in some parts. The primary factor influencing permeability is pore throat size, which is heavily influenced by the depositional environment and subsequent diagenetic processes. The findings of this study could lead to the development of accurate reservoir static models for future exploration and development plans in the studied area and elsewhere in similar depositional settings.

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Petrophysical analysis and hydrocarbon potentialities of the untested Middle Miocene Sidri and Baba sandstone of Belayim Formation, Badri field, Gulf of Suez, Egypt

Cited by 47 publications

References 5 publications

Implementation of Rock Typing on Waterflooding Process During Secondary Recovery in Oil Reservoirs: A Case Study, El Morgan Oil Field, Gulf of Suez, Egypt

Implementation of Rock Typing on Waterflooding Process During Secondary Recovery in Oil Reservoirs: A Case Study, El Morgan Oil Field, Gulf of Suez, Egypt

Improvement of Gulf of Suez subsurface image under the salt layers through re-processing of seismic data- a case study

Rock typing of the Miocene Hammam Faraun alluvial fan delta sandstone reservoir using well logs, nuclear magnetic resonance, artificial neural networks, and core analysis, Gulf of Suez, Egypt

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