RISER AND SPOOL SECTIONAL REPAIR

DETAIL PROJECT
Project
8in FWB-FWA 3Phase Riser and Spool Sectional Repair
Client
Pertamina Hulu Energi ONWJ
Location
Offshore North West Java, Indonesia
Duration
23 days fixed shutdown duration
Year
July 2016
Mode of Intervention
Subsea IMR 2015-2017 (Saturation Diving
Water Depth
42m
WORKSCOPE SUMMARY

PHE ONWJ required a riser and spool sectional repair at 8in FWB-FWA 3Phase the existing line (23 days fixed shutdown). It was found leak near FWA Platform location (approx length is 40m). Since leak cannot be repaired by clamp, the riser and spool needs to be replaced to secure the production target of Foxtrot Field.

Therefore OSI replace 8in FWB-FWA 3Phase riser and spool as per client instruction . OSI utilized DPII DSV Crest Odyssey 1 saturation diving. The scope of work consisted of:

  • Pre-shutdown (Positioning and trial, as found survey, soil/ pipe preparation and etc).
  • De-oiling & Isolation Shutdown
  • 8in FWB-FWA 3Phase Existing riser and spool removal.
  • New 8in FWB-FWA 3Phase riser and Spool Installation.
  • Tensioning & KaMOS Gasket Test.
  • As Built Survey.