3D static modeling of the Nubia Sandstone reservoir, gamma offshore field, southwestern part of the Gulf of Suez, Egypt

Othman, Adel; Fathy, Mohamed; Othman, Mohamed I. A.; Khalil, Mohammed

doi:10.1016/j.jafrearsci.2021.104160

Cited by 6 publications

(2 citation statements)

References 12 publications

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“…Such data can help to improve hydrocarbon reserve estimates and field development plans (Ali et al, 2022; Islam et al, 2021; Zhang et al, 2022). Although 3D structural modelling in oil reservoirs is simple using various available software, the modelling accuracy remains a significant challenge that has a significant impact on the effective development of hydrocarbon accumulation (Abdel‐Fattah et al, 2018; Ali et al, 2022; Gawad et al, 2021; Othman et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Three‐dimensional structural modelling of structurally complex hydrocarbon reservoir in October Oil Field, Gulf of Suez, Egypt

et al. 2023

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The October Oil Field is structurally complex due to its presence in the structurally complex system of the Gulf of Suez Rift Basin area, with the last updated structural model developed in 2012. Although the 2012 model defined the general structural framework and reservoir architecture, many challenges arose during the field development. The current study is focusing on the structural elements affecting this giant field to update the field structural model using the newly processed 3D seismic survey, the acquired data from newly drilled wells, and the associated different logging techniques. Several geological structure contour maps and cross‐sections were generated to help in delineating and understanding the reservoir's extension. Based on the detailed correlation study, we were able to detect the faults that affected the structure of the October Field in detail, define their throw amounts and directions, and identify the missed sections across the studied area. This study introduces a comparison between the old and updated model scenarios to show the differences and their effect on the field development plan and recommendations. The updated model shows differences between the 2012 model and the current study's modified model in the number, extension, and location of faults: the old model has 17 faults, while the modified model has 13 faults. The main clysmic fault “F1” has a significant impact on the entire field because it affects all studied wells. Furthermore, the F3 and F4 faults have a significant impact due to their ability to create and add compartmentalization within the area of study. This study revealed that the updated detailed 3D structural model can support the development plans for the Nubia reservoir and motivate drilling, workover, and dynamic operations to assign the development opportunities in the proper location. Based on the developed model, there are at least three opportunities in the attic areas of the study that could increase oil production and oil reserves for the field while avoiding any more failures.

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Section: Introductionmentioning

confidence: 99%

Three‐dimensional structural modelling of structurally complex hydrocarbon reservoir in October Oil Field, Gulf of Suez, Egypt

et al. 2023

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“…The present study aims at describing and evaluating Nubia reservoir quality via a comprehensive well-log analysis, [17][18][19][20][21][22][23][24][25], of four wells adequately distributed within the area of West Esh El Mallaha, south Gulf of Suez-rift. Moreover, it addresses the hydrocarbon potential, with the aid of basin modeling approach, within the Paleozoic interval proposing guidance for future oilfield development plans in the area.…”

Section: Introductionmentioning

confidence: 99%

Reservoir characterization and petroleum geology at esh el mallaha field, southern gulf of Suez, Egypt

Embabi

Abdelwahhab

Abdelhafez

2021

Al-Azhar Bulletin of Science

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Reservoir quality assessment, pointing to possible capacities for holding hydrocarbons, is crucial during exploration-phases of petroleum. This investigation closely examines the petrophysical properties of Nubia-Sandstone Formation upon performing well-log analysis of the available well-log data located at West Esh El Mallaha area, southern part of the Gulf of Suez, Egypt. It is an attempt to reveal the hydrocarbon potentialities within Paleozoic reservoirs of the area. Nubia Formation represents an important reservoir in the Gulf of Suez province with at least 15% of hydrocarbon production potential. Well-log analysis, in means of defining the petrophysical properties (shale-volume, porosity, and water-saturation), of Nubia intervals was an essential objective, in this study, to determine the reservoir quality and hydrocarbon potential capacity of reservoirs in the area. The petrophysical properties have been vertically and laterally illustrated to point out to the ultimate distribution of characteristics within the area. 1D-basin modeling approach was also performed, in this study, to retrieve the geohistory of the area confirming charging of hydrocarbons from intervals of source-prone rocks to reservoir-zones. It has been revealed that Nubia Formation is composed of sandstones interbedded with shales. It possesses a net pay reaching up to 50 feet (from lowest meaningful-value of 1 foot to highest value of 50 feet); with considerable effective porosities up to 20 %. It has been obvious that the southeastern-part of the area features good quality petrophysical characteristics capable of storing and transmitting hydrocarbons within Nubia Formation, leading to big discoveries, at the southern-part of the Gulf of Suez.

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3D Static Modeling and CO2 Static Storage Estimation of the Hydrocarbon-Depleted Charis Reservoir, Bredasdorp Basin, South Africa

2023

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An essential greenhouse gas effect mitigation technology is carbon capture, utilization and storage, with carbon dioxide (CO2) injection into underground geological formations as a core of carbon sequestration. Developing a robust 3D static model of the formation of interest for CO2 storage is paramount to deduce its facies changes and petrophysical properties. This study investigates a depleted oilfield reservoir within the Bredasdorp Basin, offshore South Africa. It is a sandstone reservoir with effective porosity mean of 13.92% and dominant permeability values of 100–560 mD (1 mD = 9.869233 × 10–16 m2). The petrophysical properties are facies controlled, as the southwestern area with siltstone and shale facies has reduced porosity and permeability. The volume of shale model shows that the reservoir is composed of clean sands, and water saturation is 10–90%, hence suitable for CO2 storage based on petrophysical characteristics. Static storage capacity of the reservoir as virgin aquifer and virgin oilfield estimates sequestration of 0.71 Mt (million tons) and 1.62 Mt of CO2, respectively. Sensitivity studies showed reservoir depletion at bubble point pressure increased storage capacity more than twice the depletion at initial reservoir pressure. Reservoir pressure below bubble point with the presence of gas cap also increased storage capacity markedly.

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3D static modeling of the Nubia Sandstone reservoir, gamma offshore field, southwestern part of the Gulf of Suez, Egypt

Cited by 6 publications

References 12 publications

Three‐dimensional structural modelling of structurally complex hydrocarbon reservoir in October Oil Field, Gulf of Suez, Egypt

Three‐dimensional structural modelling of structurally complex hydrocarbon reservoir in October Oil Field, Gulf of Suez, Egypt

Reservoir characterization and petroleum geology at esh el mallaha field, southern gulf of Suez, Egypt

3D Static Modeling and CO2 Static Storage Estimation of the Hydrocarbon-Depleted Charis Reservoir, Bredasdorp Basin, South Africa

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