Petroleo Brasileiros SA's possible record deepwater strike in the Campos basin off Brazil may be another supergiant oil field.
Petrobras has more than doubled its estimate of the oil reserves found by its 1-RJS-436 wildcat in 1,853 m (6,078 ft) of water off Rio de Janeiro state. Petrobras claimed it as a possible record water depth for a commercial oil strike (see map, OGJ, Nov. 11, p. 38).
Initially, Petrobras estimated the find's potential reserves at 400-600 million bbl. Subsequent flow tests of intervals at 3,370 m and 3,395 m indicated a potential productive capacity of 10,000 b/d of 31° gravity oil.
Roberto Alfradique, a top aide to Petrobras E&P Director Antonio Carlos Agostini, told OGJ that production test data and updating of seismic data now suggest the field, dubbed Roncador, could contain as much as 1.3 billion bbl of oil.
Appraisal drilling is to get under way in first half 1997.
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