Montara Oil Field

Summary Information

• Operator: Jadestone
• Country: Australia
• Location: north-west coast of Australia
• Production start: 2013
• Partners:
• Type: Oil / Gas
• Estimated Reserves:
• Production Volume:

Description

• The project incorporates the Montara, Swift and Skua fields which are located approximately 690km West of Darwin in the Ashmore Cartier permit area of the Timor Sea within the AC/L7 and AC/L8 production licences in 80m of water.
• The MDP consists of the following infrastructure:
  • An unmanned wellhead platform (WHP) at the Montara field with five (5) wells, three (3) 14 inch Production Risers, two (2) 6 inch Gas Lift Risers and one (1) 12 inch J-Tube;
  • Five (5) subsea wells for development of the Skua, Swift and Swallow fields;
  • Production flowline system consisting of two (2) 6- inch, one (1) 10 inch and three (3) 14 inch flowlines and associated tie-in spools;
  • Gas lift flowline system consisting of one (1) 6 inch and three (3) 4 inch flowlines and associated tie-in spools;
  • Three (3) infield control umbilicals and associated flying leads;
  • A subsea manifold in the Swift field for comingling the production fluids and distributing the compressed gas and electro-hydraulic services to the subsea wells; and
  • The Montara Venture FPSO facility and its associated mooring system located approximately 1.5 km northeast of the WHP.
  • Two (2) 10 inch Flexible Production Risers and associated riser bases. One (1) 6 inch Flexible Gas Lift Riser and associated riser base. Two (2) control umbilicals and associated riser bases. One (1) gas compressor for the gas lift system.

Contractors

• Clough: transportation and installation of the 750te Montara Wellhead Platform deck, the 285te mooring buoy with nine associated mooring legs, approximately 26km of infield pipelines, and the 100te Swift subsea manifold
• SCSE: Jacket Fabrication
• AusGroup: Supply of supervision and labour for the offshore installation of the production platform topside, jacket and offshore pipeline
• Saipem: Wellhead platform and sealines
• Thai Nippon Steel & Sumikin: Wellhead Platform Deck Replacement

History

• 2008 - PTT acquired Coogee Resources
• 2009 - An oil leak led to a major fire and Australia's worse oil spill
• 2013 - First oil produced
• 2018 - PTTEP sold the field to Jadestone Energy

Links

1. Saipem Fixed Offshore Production Facilities Project References
2. Shenzhen Chiwan Sembawang Engineering Platform References
3. Thai Nippon Steel & Sumikin Engineering & Construction Platform References
4. Clough Awarded $116m Contract by PTTEP Australasia
5. PTTEP’s subsidiary signs Share Sales Agreement to acquire Coogee Resources Limited
6. AusGroup Secures AUD$12.0 million Contract for Construction Manning Services
7. PTTEP report on crude oil and gas leak incident in Australia
8. Commencement of Montara Production
9. PTTEP divests its stake in Montara field in alignment with strategic plan