Riau Governor Saleh Djasit said the quartet with their eyes on putting cash in to the production sharing contract are Amlac of South Africa, the Arab Islamic Bank, British Aerospace and Dataran Isibumi of Malaysia.

Caltex, the Chevron/Texaco joint venture, will be giving up operatorship of the CPP block onshore Central Sumatra when a 12-month extension to its previous 30-year licence expires this August.