PETROBRAS has successfully carried out formation tests on the fourth well drilled in the ultra-deepwater pre-salt Tupi field and confirmed very high productivity from its carbonate reservoirs.
Drillstem tests on the Northeast Tupi well, 3-RJS-662A (3-BRSA-755A-RJS), in the ultra-deep waters of the Santos Basin, block BM-S-11, measured a flowrate of about 5,000 barrels per day of light oil (about 28 degrees API). Flows were limited by the capacity of the testing equipment.
Petrobras has indicated that the production potential of this well is about 30,000bpd, so boosting the promise of Tupi’s ability to deliver from its estimated 5-8billion barrels of recoverable crude. Expectation is that Tupi will be declared commercial by the end of this year.