The buoyancy of the Brazilian offshore oil and gas industry will be underlined in the coming months with the arrival of units supplied by Centrax. The U.K. company, which packages and maintains generator sets in the 2.5 to 6.3 MWe output range using the Rolls-Royce 501 series of gas turbines for applications in combined heat and power/cogeneration, base load power and standby power applications, recently won a contract to supply three 5.3 MW CX501-KB7 dual-fuel generator sets to Brazil. The end user is CMB, an asset developer.

Rolls-Royce 501 gas turbine

Shown during inspection is a Rolls-Royce 501 gas turbine similar to those packaged by
Centrax for use on the Mexilhão offshore platform to be located in the Santos Basin in 172 m of water, approximately 145 km offshore between São Paulo and Rio de Janeiro, Brazil.An SGT-200

Centrax’s customer for the generator sets is Estaleiro Mauá S.A., a major EPC contractor in Brazil. “This is just further evidence of how strong the market is in Brazil at the moment,” said Ian Clulow of Centrax who works in the sales and applications area. The three Rolls-Royce powered packages, built to Centrax’s offshore design, will include closed air circuit water cooled (CACW) 60 Hz, 4160 V generators manufactured by WEG in Brazil. Once installed, the units will work in pairs, with the third unit being held as a standby set.

The packages will provide heat and power on the fixed Mexilhão offshoreplatform to be located in the Santos Basin in 172 m of water approximately 145 km offshore between São Paulo and Rio de Janeiro, Brazil. The platform will be operated by Petrobras, the Brazilian state-owned oil and gas company, and will produce up to 15 million m3 of natural gas per day to go ashore to the Mexilhão Receiving Station in Caraguatatuba, São Paulo State. The platform is the first development that Petrobras has planned for this area. Clulow, who is based at the company’s headquarters in Newton Abbot, Devon, England, said the contract was particularly significant for Centrax, especially as the Mexilhão offshore platform is of strategic importance to Brazil due to the necessity to increase domestic production of natural gas in view of the current partial dependency on imported gas. The order adds to Centrax’s sales success for similar sets selling to companies including BP, ConocoPhillips and British Gas for on- and offshore applications.

“Petrobras has also started the construction of the onshore gas receiving and treatment station, which will distribute the gas into the country’s network,” added Clulow. “The Brazilian order also further underlines our success in the oil and gas markets throughout the world and the experience of the Rolls-Royce 501 gas turbine for this type of operation.” Rolls-Royce itself also received another significant boost in Brazil recently when it won an order from Siemens Industrial Turbomachinery Inc. to supply natural gas compressors for the Petrobras Gasene pipeline.

Siemens is the main contractor for the supply of turbocompressor packages to the Brazilian state oil company for this project. Rolls- Royce is subcontracted by Siemens to supply the compressors. The order is for 11 Rolls-Royce RF3BB-20 centrifugal gas compressors that will be driven by Siemens SGT- 200 gas turbines and installed at three compression stations along the 1400 km, 71 cm Gasene natural gas pipeline system between Catu-Bahia State and Caçimbas-Espirito Santo State. It is designed to move 20 million m3 of gas per day (see related story, p. 24). Gasene is an important Brazilian government project to connect the existing southeastern gas system to one in the northeast region of the country. It will start from the Cabiúnas Terminal in Rio de Janeiro and will run to the city of Catu in Bahia.

Petrobras is investing heavily in the oil and gas exploration and production area in the Espirito Santo Basin in southeastern Brazil. The gas produced offshore will first be processed in a new gas treatment plant onshore before being transported via the new pipeline to consumers in the northeast of Brazil. Rolls-Royce will manufacture the compressors at its Mount Vernon, Ohio, U.S.A., facility for delivery to the Siemens assembly plant in Houston, Texas, U.S.A. The equipment will then be delivered from there to the compressor stations. First deliveries are scheduled for the third quarter of 2008. visit

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