This paper presents the work performed by Conoco Indonesia Inc. in developing and testing a unique re-entry system for wireline work on two seafloor wells in 295 feet of water at Kepiting Field in the Natuna Sea of Indonesia. This system does not require the use of a floating drillship for conventional wireline work in a seafloor well.

The main components are:

  • A 240 foot buoyantly tensioned steel seafloor riser

  • A surface buoy which connects temporarily to the seafloor riser and also supports an above water work platform for the wireline lubricator assembly

  • A set of strategically located permanent workboat moorings

  • A workboat arranged to serve as the wireline unit's operating platform and to provide all support services.

This paper discusses the components, installation and performance of this unique wireline re-entry system.

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