| Abstrakt: |
The study area of the present work includes Ha’py, Akhen, Seth, and Taurt fields of the concession of Ras El Barr northeast of the Nile Delta province. The studied intervals in the four selected gas fields of the present work are related to the Pliocene-Pleistocene succession with different facies and thicknesses including El Wastani, Mit Ghamr, and post Mit Ghamr (i.e., Bilqas) sediments. The gas and condensate reservoir units were proved in all aforementioned formations with variable magnitudes of productivity and reserve storages in the Nile Delta province. Based on variable data, wireline logs (gamma ray and neutron/density), well cuttings, conventional core samples in addition to foraminiferal and calcareous nannoplanktons analyses, as well as interpreted seismic lines, the study succession could be distinguished into a series of high frequency stratigraphic third-order cycles (3.7, 3.8, and 3.9 cycles) that are sometimes short-lived sequences. These three third-order stratigraphic cycles (3.7, 3.8, and 3.9 cycles) comprise fifteen sedimentary cycles from base to top (3.7.A to 3.9.O). The detailed well correlation between the four studied fields shows that the late Pliocene section is represented by 3.7.A to 3.8.G sedimentary cycles and subcycle 3.8.H1, whereas the Pleistocene section is represented by 3.8.H2 sedimentary subcycle and cycles from 3.8.I to 3.9.O. The clastic-dominated hydrocarbon-bearing units in the studied section belong to the El Wastani Formation interval in a shallow marine, partly restricted depositional setting with intermittent partial open conditions. [ABSTRACT FROM AUTHOR] |
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