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Micro-zonation and
characterization of the pre-miocene reservoirs in Ras Budran
oil field, gulf of Suez, Egypt
Mohammad Hassaan Awad and
Samy Serag El Din*
Faculty
of Science, Al-Azhar University. Fawzy Ismail, Suez Oil
Company (SUCO). Nazr City, Cairo, Egypt.
*Corresponding author. E-mail:
seldin@adco.ae
Accepted
7 October, 2009 |
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The present study deals with Pre-Miocene reservoirs in Ras
Budran oil Field as one of the most prolific Fields in Gulf
of Suez. The reservoir was thought to be massive sandstone
and classified initially to six macro layers. The reservoir
model has been rebuilt several times at different stages of
its development but still has some problems due to reservoir
performance anomalies as shown from continuous reservoir
monitoring by Production Logging Tools. These indicate that
injected water is overriding oil bearing intervals,
suggesting that the reservoir is not massive sandstone as
thought but it is very stratified with high permeability
streaks which lead to accelerated water breakthrough and
non-uniform flood front advance. A new micro-zonation was
established where thirty-two micro-zones were defined. The
current micro-zonation definition has an internally
consistent geological framework. This new micro-zonation
definition relates production, pressure test and
core-plug porosity-permeability data to the geological
descriptions and identifies the main geological controls on
vertical and horizontal flow.
Key
words:
Prolific, Massive, Macro layers, Breakthrough,
Micro-zonation.
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