Appomattox Oil Field

Summary Information

• Operator: Shell
• Country: USA
• Location: Mississippi Canyon Block 392, Gulf of Mexico
• Production start: 2019
• Partners: Shell - 80%, Nexen - 20%
• Type: Oil / Gas
• Estimated Reserves:
• Production Volume: Peak production est. 175,000 barrels of oil equivalent (boe) per day

Description

• The Appomattox developmentinitially produced from the **Appomattox** and **Vicksburg** fields
• The Appomattox development host consists of a semi-submersible, four-column production host platform, a subsea system featuring six drill centres, 15 producing wells, and five water injection wells.
• The Mattox Pipeline which was constructed, is a 24-inch corridor pipeline that transports crude oil from Appomattox westward to the Proteus pipeline system (part of the Mardi Gras Offshore Oil and Gas Pipeline System) and then onshore.
• Peak production estimated to reach approximately 175,000 barrels of oil equivalent (boe) per day
• The nearby discoveries at the Gettysburg and Rydberg prospects could be developed via tiebacks

Dover Development

• The development concept for Dover is a subsea tieback to the Shell-operated Appomattox production hub, with two production wells produced through a 17.5-mile flowline and riser.

Contractors

• **FMC Technologies:** Enhanced Vertical Deepwater Trees, subsea manifolds, topside controls, a control system, and a distribution system
• **Oceaneering:** Electro-hydraulic steel tube control umbilicals, totaling approximately 60 kilometers (37 miles)

History

• 2010 - Appomattox Oil Field discovered
• 2012 - Further reserves discovered in the Northern section of the field
• 2013 - Vicksburg oil field discovered
• 2015 - Final investment decision taken
• 2019 - Oil production started
• 2023 - FID for Dover
• 2024 - Ineos agrees to acquire CNOOC's stake

Geology

• The Appomattox structure is comprised of three large fault blocks in the Norphlet formation, which dates back 150-200 million years ago to the Jurassic period

Links

1. Gulf Of Mexico Deepwater Natural Gas And Oil Qualified Fields
2. Shell builds eastern Gulf of Mexico portfolio with significant new oil discovery
3. Appraisal success at Appomattox discovery
4. Nexen Confirms Resource Additions at Appomattox
5. Gulf of Mexico Success at Shell’s Vicksburg “A” Well
6. Shell takes final investment decision for the Appomattox deep-water development in Gulf of Mexico
7. FMC Technologies Awarded Contract for Shell Appomattox
8. Oceaneering Announces Shell Appomattox Umbilical Contract
9. Shell starts production at Appomattox in the Gulf of Mexico
10. Shell Takes Investment Decision at Dover In US Gulf Of Mexico
11. INEOS Energy to acquire oil and gas assets in US Gulf of Mexico