Bayu-Undan Operations and Maintenance


Timor Sea, Australia

Contract Period
Jun 2004 - Current


The Bayu-Undan offshore facilities consist of a floating storage and offloading facility and three fixed platforms, a remote wellhead platform, a compression, utilities and quarters platform and a drilling, production and processing platform. The latter two are located adjacent to each other and linked by an access bridge, forming the Central Production and Processing Complex.


The contract includes:

  • Routine maintenance & operations support
  • Implementation engineering
  • Work pack preparation
  • Brownfield project execution including Asset Integrity Maintenance campaign
  • Planning
  • Hazard assessment
  • Offshore field services
  • Shutdown services including planning, preparation and execution supervision and labour
  • Management of specialist subcontractors
  • Fabrication management
  • Training and capability development


  • The Bayu-Undan gas and condensate field, located in the Timor Sea, is estimated to hold over 400 million barrels of hydrocarbon liquids and 3.4 trillion cubic feet of gas. 
  • The Bayu-Undan field has been developed in 3 phases. The first phase ‘Gas Recycle Project’, involved the production and processing of wet gas, the separation and storage of condensate, propane and butane, and the re-injection of dry natural gas back into the reservoir
  • The second phase incorporated a 500km x 26” diameter sub-sea gas pipeline from the field to Darwin and a 3MTPA LNG process plant at Wickham Point in Darwin.
  • Phase 3 includes additional wells.