Giant Oil and Gas Fields

Carmalt, S. W.; John, Bill St.

doi:10.1306/m40454c2

Cited by 26 publications

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“…From the start of the Late Cretaceous, extensional tectonics caused a partial collapse of the arch that led to the development of horsts and grabens system, as shown in Figure 1 [18][19][20]. Giant oil fields such as Amal, Sarir, Raguba, and Zelten were found between 1956 and 1961 [21,22]. Compared to the North Sea, which is heavily explored three times more than the Sirte basin, the Sirte basin still has a real significant future explorations potential [23,24].…”

Section: The Study Sitementioning

confidence: 99%

Case Study of Petrophysical Evaluation Utilizing Well Logs Data with Optimization of Reservoir Cut-off Parameters

Mahmud

Bennour

2020

Int. J. Petrol. Technol.

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Petrophysical evaluation of well log data is essential for the exploration and evaluation of hydrocarbon-bearing formations. Moreover, there are no standard criteria to implement cut-offs on petrophysical properties as a direction for economic decisions. In the present work, a petrophysical evaluation of well logging data from four wells in a mature oil field is performed to identify formation quality as a potential for hosting mature hydrocarbons reservoirs. Full consideration of cut-off values was taken into account. The cut-offs were estimated from well-recognized petrophysical relationships for permeability as a function of porosity, water saturation, and shale content. Results verification and calibration were also made based on laboratory measurements of petrophysical properties obtained from available core plugs in order to minimize uncertainty. Lithology analysis and characteristics revealed that the target formation is mainly sand and shale sequences. Results from well logs were in agreement with results obtained from core data. Formation effective porosity varies from 16 to 26% in all wells. A wide range of variations is observed in water saturation ranging from 28 to 57% and permeability ranging from 20 to 3300 mD. This is in good agreement with other measurements and well log analysis that show the mature formation remains to be a good hydrocarbon reservoir with significant potential.

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Section: The Study Sitementioning

confidence: 99%

Case Study of Petrophysical Evaluation Utilizing Well Logs Data with Optimization of Reservoir Cut-off Parameters

Mahmud

Bennour

2020

Int. J. Petrol. Technol.

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Organic Geochemistry of Precambrian Sedimentary Rocks

Imbus

McKirdy

1993

Topics in Geobiology

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The late Permian carbonates (Khuff Formation) in the western Arabian Gulf: Its hydrocarbon parameters and paleogeographical aspects

Alsharhan

Nairn

1994

Carbonates Evaporites

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The Khuff Formation in the Arabian Gulf region is predominantly a shallow marine carbonate succession of Late Permian age, formed during transgressive-regressive depositional cycles. It varies considerably in thickness (from 500 to 975 m) and in reservoir quality. The formation proved the presence of large volumes of gas in Saudi Arabia, Bahrain, Qatar, Iran and United Arab Emirates and minor oil in Saudi and Omani fields. Reservoir characteristics indicate that the principal hydrocarbon accumulations lie in the subtidal to intertidal reservoir lithologies. Primary porosity and permeability tend to be low, but may be enhanced by a system of open fractures, thus making the Khuff sequence a good to very good reservoir. The source of the gas is either from Silurian shales or is indigenous to the Khuff carbonate itself. The anhydritic shale of the Lower Triassic Sudair Formation forms an excellent seal.

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Giant Oil and Gas Fields

Cited by 26 publications

References 0 publications

Case Study of Petrophysical Evaluation Utilizing Well Logs Data with Optimization of Reservoir Cut-off Parameters

Case Study of Petrophysical Evaluation Utilizing Well Logs Data with Optimization of Reservoir Cut-off Parameters

Organic Geochemistry of Precambrian Sedimentary Rocks

The late Permian carbonates (Khuff Formation) in the western Arabian Gulf: Its hydrocarbon parameters and paleogeographical aspects

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