Abstract

Abstract A mature well in a carbonate reservoir in Saudi Arabia was no longer producing and was sidetracked in a workover operation to regain production. This paper describes the usage of swellable packers to isolate a detrimentally water producing fracture encountered during drilling of a 3-7/8" slim hole horizontal in a naturally fractured carbonate reservoir. No means of open hole/slim hole isolation were available prior to the introduction of swellable packers. The packers were successfully run and the well was brought into production at good rates and low water cut.

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