Jack And St Malo Oil Fields

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Summary Information

  • Operator: Chevron
  • Country: USA
  • Location: Walker Ridge Block 718, Gulf of Mexico
  • Production start: 2014
  • Partners: Chevron - 51%, Petrobras - 25%, Statoil - 21.5%, ExxonMobil - 1.25 % and ENI -1.25%
  • Type: Oil / Gas
  • Estimated Reserves: total recoverable resources in excess of 500 million Boe
  • Production Volume:


  • The Jack and St. Malo fields are located within 25 miles (40 km) of each other in 7,000 feet (2,134 m) of water, approximately 280 miles (450 km) south of New Orleans, Louisiana.
  • They are being jointly developed with three subsea centers tied back to a host floating production unit located between the two fields
  • The facility is planned to have a design capacity of 177,000 barrels of oil-equivalent per day to accommodate production from the Jack/St. Malo development, which is estimated at a maximum total daily rate of 94,000 barrels of oil-equivalent, plus production from third-party tiebacks.
  • Total project costs for the initial phase of the development are estimated at $7.5 billion.
  • An approximately 136-mile 24-inch oil export pipeline will transport oil from the Jack/St. Malo hub production facility to the Shell Boxer “A” fixed platform at Green Canyon Block 19. From here it is transported via the Amberjack Oil Pipeline


  • KBR:
    • Conceptual engineering and design, pre-FEED and FEED
    • Design and engineering support through fabrication for the deep draft semi-submersible (semi) including: hull, deck box, accommodations, appurtenances, equipment foundations; mooring system design; and anchor suction piles
  • Samsung Heavy Industries ("SHI"): Fabrication of the hull for the semi-submersible platform
  • Technip: Engineering, fabrication and subsea installation of more than 53 miles (85 kilometers) of 10.75” outer diameter flowlines, steel catenary risers, pipeline end terminations, manifolds, pump stations and tie-in skids
  • Aker Solutions: Supply of three subsea production control umbilicals
  • McDermott:
    • Fabrication and installation of umbilicals, jumpers, flying leads, pump modules and stations
    • Transport and installation of subsea umbilicals, manifolds, jumpers and flying leads for the expansion project
  • J P Kenny:
    • FEED for Amberjack Oil Export Pipeline
    • Detailed design for Amberjack Oil Export Pipeline
  • GE Oil & Gas: Supply of three customized aeroderivative gas turbine-generator modules
  • First Subsea: Supply of the mooring connectors
  • Saipem: Export Pipeline
  • Nexans: Design, manufacture and supply a total of 138,000 feet (42km) of power umbilicals and terminations
  • InterMoor: Design and fabrication of 11 suction piles
  • ClampOn: Numerous subsea sand monitors and PIG detectors
  • Crowley: Towing of platform
  • Manatee: Subsea operating procedures, subsea commissioning procedures, well unloading procedures, and subsea startup procedures


  • 2003 - St Malo discovered
  • 2004 - Jack discovered
  • 2005 - Statoil acquires a stake from Encana
  • 2010 - Statoil increases its stake to 21.5%
  • 2010 - Chevron Sanctions Jack/St. Malo Project
  • 2011 - KBR awarded FPU contract
  • 2012 - Well testing completed on St Malo
  • 2013 - The semi-submersible platform was transported to the Gulf from Korea
  • 2014 - Platform towed into place
  • 2014 - First oil production


  • The Jack and St Malo discoveries are both in the lower tertiary trend of the deepwater Gulf of Mexico, commonly known as the Paleogene play.


  1. Gulf Of Mexico Discoveries In Water Depths Greater Than 5000
  2. Manatee Offshore References
  3. Mcdermott Subsea References
  4. Samsung Platform References
  5. Saipem Pipeline References
  6. Statoil acquires Deepwater Gulf of Mexico assets
  7. Devon Energy Announces Positive Results From Production Test of Jack Well
  8. Increased share in St Malo
  9. First Subsea Awarded Jack & St Malo FPU Mooring Connector Contract
  10. Nexans wins power umbilical contract for Chevron-operated Jack and St. Malo fields in the Deepwater Gulf of Mexico
  11. InterMoor Contracted to Design and Fabricate Suction Piles
  12. Chevron Sanctions Jack/St. Malo Project in the Gulf of Mexico
  13. Technip awarded a major subsea contract for the Jack & St-Malo fields in the Gulf of Mexico
  14. Wood Group Kenny awarded Amberjack Jack/St. Malo oil export pipeline detailed design
  15. KBR Awarded Detailed Design Engineering Contract for Jack & St. Malo Floating Production Unit by Chevron U.S.A. Inc.
  16. Aker Solutions to supply three subsea production control umbilicals for Chevron
  17. Chevron Awards GE Oil & Gas High-Tech, Offshore Gulf of Mexico Contract
  18. Contract for subsea sand monitors and PIG detectors
  19. Dockwise Vanguard started maiden trip
  20. Chevron Announces Successful Test Well at St. Malo in Gulf of Mexico
  21. Crowley Does it Again: Ocean Class Tugs and High-Deck-Strength Barges Deliver Massive Offshore Production Facility to Deep Waters of U.S. Gulf
  22. McDermott Completes Contract Scope for Jack & St. Malo Project in Gulf of Mexico
  23. Chevron Announces First Oil From Jack/St. Malo Project in the Gulf of Mexico
  24. McDermott Awarded Chevron Subsea Installation Contract for Jack and St. Malo Fields Expansion

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