Montara Oil Field

Summary Information

• Operator: PTTEP
• 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:

+++ 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

+++ Geology

+++ 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