Great White (AC857) - Shell

Profile for Great White (AC857) - Shell Oil and Gas Asset

Location

The Great White oil and gas field is located in the Federal offshore waters of the United States, specifically in the Alaminos Canyon area of the Gulf of Mexico. The exact coordinates are 26.1147, -94.9103 (WGS 84).

Water Depth and Geology

The field is situated in ultra-deepwater, with a water depth of approximately 8,717 feet. It is part of the Lower Tertiary Paleogene formation, a frontier area for energy development in the Gulf of Mexico.

Operators and Owners

The Great White field is operated by Shell Offshore Inc., a subsidiary of Shell plc. The ownership is shared among Shell, BP, and Chevron, each holding a 33.33% working interest.

Discovery and Production

• Discovery Year: The field was discovered in 2002.
• Production Start: While the exact production start year is not specified, the field has been producing since at least 2011, as it is part of the Perdido Regional Host production hub which began production that year.
• Current Status: The field is currently operating and producing oil and gas.

Reserves and Production

• Reserves:
  • Remaining gas reserves: 1,274.25 million m³ as of 2019.
  • Remaining oil reserves: 38.9 million barrels as of 2019.
• Cumulative Production:
  • Oil: 181.5 million barrels as of 2019.
  • Gas: 9,375.62 million m³ as of 2019.
• Annual Production:
  • Oil: 17.74 million barrels per year in 2020, increasing to 21.64 million barrels per year in 2022.
  • Gas: 718.94 million m³ per year in 2020, increasing to 855.38 million m³ per year in 2022.

Future Development

• A phased campaign to deliver three new wells in the Great White unit has been approved, aiming to boost oil production at the Shell-operated Perdido spar. These wells are expected to produce up to 22,000 barrels of oil equivalent per day (boed) at peak rates by April 2025.

Infrastructure and Operations

• The field is connected to the Perdido Regional Host production hub, which has the capacity to handle 100,000 barrels of oil and 200 million cubic feet of gas per day. The hub processes oil and gas from the Silvertip, Great White, and Tobago fields.
• The project involves the installation of subsea equipment, including flexible flowlines, steel flying leads, and electrical flying leads, to support the production from the wells.

Environmental and Regulatory Aspects

• Shell Offshore Inc. has submitted a Supplemental Development Operations Coordination Document (SDOCD) to commence production of six subsea wells at the Perdido Great White Frio development. This plan includes environmental mitigation measures and is under review by regulatory authorities.

Production Hub

The Perdido spar, located approximately 200 miles south of Galveston, Texas, serves as the production hub for the Great White field. The spar has a production capacity of 125,000 boed at peak rates.