Abstract

ABSTRACT Previous assessments of Mauddud reservoir of Bahrain Field have considered the reservoir to be a homogeneous unit and that long term gas injection has helped increase recovery efficiency. The present study revealed that the anomalous fluid saturations are the combined result of (1) heterogeneity and layered nature of the reservoir, (2) differences in drive efficiencies by natural water drive and induced gas cap. It is concluded that the recovery efficiency can be improved, firstly by injection of gas in the lower layers of the reservoir and secondly by systematic employment of low volume producers as against the present practice of high volume production.

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