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7th Middle East Geosciences Conference and Exhibition
Manama, Bahrain
March 27-29, 2006
AED/EAED, Saudi Aramco, P. O. Box 5183, Dhahran 31311 Saudi Arabia, phone: +966-3-874-6330,
fax: +966-3-873-1007, [email protected]
Integrated interpretation of 3D seismic and well data from south Ghawar, Saudi Arabia, provided better understanding of
facies distribution and structural
style of study area. The objective of this study is to evaluate the Unayzah reservoir
potential. Several north-south and east-west well
cross
-
sections
reveal thickening and thinning pattern of Pre-Khuff clastic
units. It is observed that pre-Khuff clastic thickens on the flanks of the structure while it thins on crest of this area. DETECT
and CURVATURE analyses resulted in defining four major north-south fault trends and a minor east west fault. These
north-south faults controlled the topography during the Hercynian and resulted in Unayzah filling the paleo-lows. A
difference amplitude map was generated from the maximum and minimum amplitude of the reservoir interval. The result
shows good correlation between amplitude anomalies and high potential reservoir development areas. Strong amplitude
anomalies have been used in combination with
structural
closures to identify the future potential in the area.