SEISMIC INTERPRETATION AND STRUCTURAL ANALYSIS OF THE 3D SEISMIC DATA IN SITRA FIELD, ABU GHARADIG BASIN, NORTHERN WESTERN DESERT OF EGYPT

Abstract

The application of 3D structural modeling enhances the spatial visualization of the different data sets and simulates the real situation in the field and pursues better communications through a targeted project by simulation. The petrophysicalmodel substitutes the unsuccessful role of the seismic attributes in the investigated area. This can be more helpful in solving the production problem in a specific oil field and it can serve any economic upcoming future appraisal. Abu Gharadig basin is the most productive basin in the northern Western Desert region having an enormous high hydrocarbon potentiality. The basin is trending in the ENE–WSW direction having sediments varying in age from Late Jurassic to Early Cretaceous. The study area (SITRA - 8 Field) lies on the downthrown side of the main Abu El Gharadig Basin periphery fault in between the basin center and the Qattara High. The present study is mainly devoted to propose a significant integration between the subsurface geological information, the interpreted 3D seismic data as well as the well logging data for the purpose of delineating the major effective subsurface structures at Sitra-8 Field region in northern Western Desert of Egypt. In addition, the study is establishing a well evaluation of Abu Roash-C reservoir.The study area lies between latitudes 29° 44' 41''and 29° 48' 00''Nand longitudes 27° 56' 27'' and 28° 00' 00''E. It covers an area nearly about 35 km². The author conducted 3D seismic interpretation analyses in parallel to non-conventional petrophysical modeling for five wells imaging the subsurface structures and the lateral distribution of varies reservoir facies. In addition, the iso-parametric maps of reservoir parameters were plotted creating a visual understanding of fluid flow. Furthermore, Allen Diagrams reporting fault sealing were established for detecting the hydrocarbon leaking problem.Finally, a future development of profitable hydrocarbon sources has been proved in the northern eastern parts of the studied area.