Petrobras pumps first oil from massive Tupi field in pilot project offshore Brazil

By Phaedra Friend Troy

Brazilian major Petrobras (NYSE:PBR) has achieved first oil production from its massive Tupi oil and gas field on the BMS-11 Block offshore Brazil. The early production pilot project is pumping oil from the pre-salt field to the FPSO Cidade de Angra dos Reis in the deepwaters of the Santo Basin.

The RJS-660 production well will undergo technical testing until Declaration of Commerciality is pronounced for the Tupi field, which is expected in December 2010. Meanwhile, the process of connecting the FPSO to the other production wells will continue, and then the Tupi field will enter the production development phase.

FPSO Cidade de Angra dos Reis

Capable of producing 100,000 barrels of oil and 5 million cubic meters of gas a day, the FPSO Cidade de Angra dos Reis is moored in waters measuring 2,149 meters deep. 

Future field development calls for six oil-production wells, a gas-injection well, a water-injection well and an alternating water- and gas-injection well to be connected to this FPSO.

Produced oil will be shuttled via tankers, and produced natural gas will be separated aboard the FPSO and used for power generation on the vessel, reinjected into the oil reservoir and transported via subsea pipeline to the Mexilhao platform in shallower waters and then to the under-construction Monteiro Lobato gas processing center onshore.

Pre-Salt Phased Development

The FPSO Cidade Angra is located near the FPSO Cidade de Sao Vicente, which has been performing an extended well test on the Tupi field since May 2009. This extended test has already produced some 7 million barrels of oil from the field.

The information gathered from the testing phases will help Petrobras develop future production plans and developments on other pre-salt fields. 

To date, nine wells have been successfully drilled on the Tupi reservoir, proving a highly productive light oil and natural gas accumulation boasting an oil-bearing reservoir measuring 128 meters thick. Another two wells are scheduled to be drilled at Tupi before year-end.

Tupi is expected to contain some 5 to 8 billion barrels of oil equivalent.

Petrobras serves as the operator of the BMS-11 Block with 65 percent interest. Project partners include BG Group with 25 percent and Galp Energia with 10 percent.

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