BUILDING OF STRUCTURAL MODEL AND FAULT SEAL ANALYSIS AT FERDAUS OIL FIELD, SOUTHEAST ABU GHARADIG BASIN, WESTERN DESERT, EGYPT | ||
| Journal of Egyptian Geophysical Society | ||
| Volume 21, Issue 1, 2023, Pages 1-10 PDF (2.98 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jegs.2023.385855 | ||
| Authors | ||
| R. ISMAIL1; A. EL-WERR2; A. HELALY2 | ||
| 1(1) North Bahariya Petroleum Company | ||
| 2(2) Geophysics Department, Faculty of Science, Ain Shams University | ||
| Abstract | ||
| Reservoir modeling typically falls into two main categories: geological modeling (static model) and reservoir simulation modeling (dynamic model). The objectives of the integrated reservoir modeling are to create a reliable evaluation of the bulk and net reservoir volumes, and the original hydrocarbons in place - which are of utmost importance in assessing the economics of a reservoir development project. Static model is created by geophysicists and geologists to provide a static description of the reservoir, prior to production whereas dynamic model is created by reservoir engineers to simulate the flow of fluids within the reservoir, over its production lifetime. In the present study, seismic interpretation yields Ferdaus oil field structure which is a northwest-southeast oriented highly faulted tilted block. Most faults are trending northwest-southeast or east-west, while a few trend north-south. Fault modeling, pillar gridding, make horizons and make zones processes were created and added together to build the final 3D structural model. The obtained final 3D structural model confirms the interpreted structure yielded from the seismic interpretation. The five wells drilled in the Ferdaus oil field tested and identified the regional setting of this part of the Western Desert by having northwest-southeast structure trend at Middle and Lower Abu Roash “G” and Bahariya Formation target levels as a big horst block which is divided into smaller three-way dip closure tilted fault blocks by different fault trends. Fault seal can arise from reservoir/non-reservoir juxtaposition. Allan diagram method was used to determine the juxtaposed reservoirs for evaluating the flow potential across a fault strike and mapping the fault plane with the hanging wall and footwall intersections superimposed on the modeled fault surface. The Middle Abu Roash “G”, Lower Abu Roash “G” and Upper Bahariya reservoirs in the footwall upthrown are juxtaposed by Abu Roash “E” silt and shale, Abu Roash “F” Limestone and Upper Abu Roash “G" shale seal Members in the hanging wall downthrown side. | ||
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