The paper describes the recompletion of an oil well in the Prudhoe Bay field using coiled tubing (CT) in the first use of two inch outside diameter (OD) CT. The CT and currently available auxiliary equipment were installed inside of the existing production tubing to improve flowing tubing hydraulics. The feasibility of relatively large CT for production tubing is demonstrated. In the example well, installation of coiled tubing enabled a "dead" well to be restored to production at a rate of several hundred barrels per day without an expensive rig workover or modifications to existing wellhead or downhole equipment.

Keywords:
gas lift mandrel, completion installation and operations, assembly, workover, mandrel, upstream oil & gas, zone 1, recompletion, inch ct, nipple
Subjects:
Completion Installation and Operations, Coiled tubing operations
Copyright 1991, Society of Petroleum Engineers
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