Keeping Western India in line

Keeping Western India in line

Pipeline Replacement Project – 3

Background/overview of services

ONGC required replacement of existing pipelines and new pipelines for better management of field due to ageing of field and deteriorating condition of existing pipelines. Phase 3 of pipeline replacement campaign included 27 rigid pipeline, 5 flexible pipelines and 4 umbilical lines along with associated risers and I/J-tubes. Design and installation was split for two separate installation campaign. INTECSEA scope of work was to perform detailed design and construction support for all pipeline and riser replacements.


  • The field layout is congested with a high number of pipeline and cable crossings (up to 38 crossings per pipeline)
  • Crowded platforms require direct pipeline approach without use of spool.
  • Short project schedule for design and fabrication due to short weather window.


  • Project delivery was completed within the schedule due to tight integration with EPC contractor’s parallel design and fabrication.
  • The design was optimized to minimize installation time and raw material usage; this translated to significant cost savings for EPC contractor.
  • INTECSEA’s design met both EPC Contractor and ultimate client’s technical requirement. Consequently, INTECSEA was awarded with Heera Field Development Phase II and Additional Pipeline Project for ONGC.