1. Petrophysical and seismic evaluation of pre rift sediments of the southern Gulf of Suez basin, Egypt.
- Author
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Aziz, Emad A. Abd El and Gomaa, Mohamed M.
- Abstract
In the current work, wire line logs, core measurement data, and 3D seismic analysis are interpreted to evaluate the Nubian sandstone reservoir in the Saqqara oil field, Gulf of Suez. The petrophysical parameters of the studied reservoir, such as porosity, shale volume, water saturation, and net-pay thicknesses, are calculated from logs and integrated with that measured from core plugs to build a suitable model for the reservoir. This is done in addition to interpreting twenty 3D seismic lines to create a reasonable structure configuration for the study area. Prospect appraisal, reservoir management, and development benefit greatly from the thorough integration of all wire line log and core findings and seismic line interpretation. The structure is essential to the pattern of sedimentation and trapping in this location, based on the seismic interpretation of the examined area. The Nubian sandstone reservoir has favorable characteristics, according to the study’s findings: its net pay thickness reaches 496 feet, its porosity values are (10–16%), its water saturation are (12–53%), and its shale volume does not surpass 8%. The well-informed results of the comparative petrophysical study show that the examined Nubian sandstone reservoir is of excellent quality, as shown by the good relation coefficients between core porosity and permeability, which are equivalent to r = 0.79 and r = 0.81, respectively. Conversely, the developed model highlighting the necessary corrections for the appropriate model of the investigated reservoir highlights the differences between the core porosity and permeability values and the one derived from the log computation.Plain Language Summary: At Gulf of Suez’s Saqqara oil field, the Nubian sandstone reservoir is assessed by the interpretation of wire line logs, core measurement data, and three-dimensional seismic analysis. To create an appropriate model for the reservoir, the petrophysical parameters of the examined reservoir, such as porosity, shale volume, water saturation, and net-pay thicknesses, are computed from logs and combined with data obtained from core plugs. Twenty 3D seismic lines are interpreted in addition to this in order to construct a plausible structure configuration for the study area. A comprehensive integration of all wire line log and core data and seismic line interpretation is beneficial for prospect appraisal, reservoir management, and development. Seismic interpretation of the studied area indicates that the structure is critical to the pattern of sedimentation and trapping in this site. The Nubian sandstone reservoir under investigation is of outstanding quality, as indicated by the well-informed results of the comparative petrophysical analysis and the good relationship coefficients between core porosity and permeability, respectively. The disparities between the core porosity and permeability values and the one obtained from the log calculation are highlighted in the generated model that indicates the essential modifications for the proper model of the examined reservoir. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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