Reservoir
The Lula field lies below 2,000 metres (6,600 ft) of water and then 5,000 metres (16,000 ft) of salt, sand and rocks. The field was discovered in a geological formation known as the Pre-salt layer. The Lula accumulation, in block BM-S-11 of the Santos basin, contains at least 5 billion barrels (0.79 km3) of recoverable oil which could increase Brazil's reserves by 62%. This would make it twice the size of the Roncador, previously Brazil's largest field. Lula is a sub-salt discovery—held in rocks beneath a salt layer that, in places, reaches thicknesses of over 2,000 metres (6,600 ft). The crude oil is an intermediate or medium gravity oil of 28–30 °API, which corresponds to a specific gravity around 0.88. The Lula crude oil is considered sweet, which means that the sulfur content is less than 0.7% sulfur by weight.
Recent estimates have pushed the total to greater than 30 billion barrels (4.8×109 cubic metres) equivalent, though Petrobras has not confirmed the highest estimate. These estimates are being put into severe doubt by impartial analysts.
Read more about this topic: Tupi Oil Field
Famous quotes containing the word reservoir:
“It’s very expressive of myself. I just lump everything in a great heap which I have labeled “the past,” and, having thus emptied this deep reservoir that was once myself, I am ready to continue.”
—Zelda Fitzgerald (1900–1948)