The new Dalia field (the Dahlia flower in Portuguese) lies alongside last year's elephant discovery Girassol. Elf estimates potential recoverable reserves in this large block could be between 4 billion and 5 billion barrels of oil. The company likens the acreage to Brazil's Campos basin. Production testing on Dalia confirmed a highly productive reservoir with flow-rates surpassing expectations. This and clear mapping which shows the oil-bearing Miocene sands stretching out over a very large area give Elf and its partners the confidence to say it is probably significantly bigger than Girassol.