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العنوان
3D Geological Modeling of the Abu Roash G reservoir (Upper Cretaceous), Hamra Field, /Abu Gharadig Basin, Western Desert, Egypt.
المؤلف
Maaty, Gamal Eldin Elsayed Ahmed
هيئة الاعداد
باحث / جمال الدين السيد أحمد معاطى
مشرف / محمد فاروق ابو حشيش
مشرف / محمد محمود أبوالحسن
الموضوع
Surface Stratigraphy Fluid Saturation
تاريخ النشر
2021
عدد الصفحات
165 P.:
اللغة
الإنجليزية
الدرجة
ماجستير
التخصص
الجيوفيزياء
تاريخ الإجازة
8/3/2021
مكان الإجازة
جامعة المنوفية - كلية العلوم - الجيولوجيا
الفهرس
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Abstract

Hamra oil field (the study area) is located in East Bahariya concession are in the most eastern trough of the Abu Gharadig basin in Rahma Development Lease, between latitudes 29° 27` 14.41``N - 29° 28` 22.69``N and longitudes 29° 28` 40.17``E- 29° 31` 48.95``E occupying a current area of 8.45 square kilometers (2089 acre).
from structural to petrophysical studies were conducted for full understanding of the nature of the producible reservoirs in the Hamra oil field.
Firstlythe seismic interpretation was conducted on the twenty seismic linespass-through four wells that concerned the study area. Seven reflectors, Upper Bahariya, Middle Abu Roash “G” Member, Abu Roash “F”, “C”, “A” member’s ,Khoman Formation and Apollonia Formation.have been picked. from depth, structure maps many normal faults were identified which trend to the Northwest-Southeast, East-West, and Northeast-Southwest direction. The principal structure responsible for hydrocarbon entrapment in the study area was a structural high which corresponds to the three-way dip closure of the East-West major normal fault and the Northeast-Southwest normal fault of Hamraoilfield. Although the structural study was not adequate to resolve the necessary details to identify the specific types of stratigraphic surfaces, but it was the building block for conducting the 3D reservoir model.
Secondly, the petrophysical study was conducted to identify the productive zone, to distinguish between oil, and water in the reservoir, and to define the petrophysical parameter to be used later on petrphysical model. The analysis showed pay in (Middle Abu Roash (G)Member, and Lower Abu Roash (G)Member.
All zones after calculating Clay volume, water saturation, and average effective porosity and after applying cut-offs, encountered net pays as follow: 12 feet cumulative net pay for Hamra-6, 45 feet cumulative net pay for Hamra-18 St, 21 feet cumulative net pay for Hamra-21, and 20 feet cumulative net pay for Hamra-38.
Mapping the petrophysical characteristics of the different reservoirs encountered in the study area shows that the water saturation controlled bystructure elements at Abu Roash “G-20”, ”G-21”, ”G-22” zones,andAbu Roash “G-10” zonecontrolled by a combination of structure and facies elements.Clay volume and effective porosity of all zones controlled by facies distribution.
Finally, Geological modeling was conducted to compare between the facies petrophysical model, which revealed that the petrophysical parameters depend on facies distribution as it gets enhanced with the better quality sandstone
Based on 3D Geological modeling the cumulative stock tank of original oil in place estimate for the study area is 28.208 Million Stock Tank Barrel.