HOUSTON, Aug. 9 -- Shell Nigeria Exploration & Production Co., through Single Buoy Moorings Inc., Marly, Switzerland, awarded Coflexip Stena Offshore International a portion of the mooring and installation package for the Bonga field development off Nigeria.
The value of the contract was not disclosed. Shell Nigeria has awarded several Bonga contracts this year (OGJ Online, Mar. 23, 2001).
Bonga is in 1,100 m of water on Oil Mining Lease 118, 120 km off the Niger Delta southwest coastline.
CSO International's contract covers project management, engineering, procurement, transportation, and installation of three dynamic 19-in. internal diameter, 2.3 km flexible oil offloading risers between the floating production, storage, and offloading vessel and the single point mooring buoy.
CSO said this will be the first use of flexibles of such length as export risers. They will be built at Coflexip Stena Offshore Group's Le Trait plant in Normandy during fall 2002. They are designed to last 20 years.
CSO will also conduct project management, engineering, and installation of more than 55 km of gas lift risers and control umbilicals, plus five large manifolds.
The offshore work is expected to be done in summer 2003.
Shell Nigeria Exploration & Production owns 55% of Bonga and operates the field on behalf of Nigerian National Petroleum Co. Esso Exploration & Production Co. Nigeria Ltd. owns 20%, Nigeria Agip Exploration Ltd. owns 12.2%, and Elf Petroleum Nigeria Ltd. owns 12.5%.
