New discoveries improve oil prospects in Brazil. Part 2
Discovery of the Carmopolis Oil Field has greatly encouraged petroleum exploration in Brazil. Located in the Sergipe basin, 12 miles inland from the Atlantic, Carmopolis was the first discovery of a new area outside of the Bahia fields in 10 yr of exploration by Petrobras. Wells at Carmopolis yield 21/sup 0/API gravity oil from Muribeca sands at depths of 2500-2700 ft. Average yield is about 100 bpd, but an exceptional yield of 900 bpd has been obtained. A productive area of 6000 acres has been delimited by 34 wells. Prospects of the Barreirinhas basin look highly encouraging, and discovery of a new important field is expected, following the drilling of several significant wells. One of them yielded 41/sup 0/API gravity oil at about 1500 m or 5000 ft. In the coastal basins of Sergipe, Alagoas, and Barreirinhas, a sequence of Cretaceous marine transgressions and regressions from the Atlantic covers the crystalline basement of the Brazilian shield, exposed in the W and limited by a fault. Other parallel faults divide the basin and continue on to the continental shelf, as indicated by the marine seismic surveys.
- OSTI ID:
- 6587304
- Journal Information:
- World Oil; (United States), Vol. 162:2
- Country of Publication:
- United States
- Language:
- English
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