TEN extends Ghana's, Tullow's deepwater credentials

摘要

Ghana's second deepwater development has come onstream within budget, just over three years after the government sanctioned the project. The TEN project in the Deepwater Tano license covers three fields in water depths of 1,000-2,000 m (3,281-6,562 ft), 20 km (12.4 mi) west of the Jubilee field. Operator Tullow Oil, in partnership with Anadarko, Kosmos Energy, Ghanaian National Petroleum Corp. (GNPC), and PetroSA, commissioned MODEC to convert the double-hulled VLCC Centennial J into the 340-m (1,115-ft) long, 56-m (184-ft) wide FPSO Prof. John Evans Atta Mills. The FPSO, moored in 1,500 m (4,921 ft) of water, is designed to process up to 80,000 b/d of oil and 180 MMcf/d of gas. It is connected via subsea manifolds, flexible flowlines and static/dynamic um-bilicals to oil and gas production wells and water and gas injectors - depending on performance and future plans, up to 24 development wells may eventually be drilled. Tullow anticipates a productive lifespan of 20 years. Project manager Terry Hughes spoke to Offshore about the various issues the partners dealt with along the way, including reservoir depletion mechanisms, managing engineering, lessons learned from Jubilee, and local content.