The Spanish major plans to increase output at block 57.
State oil company PDVSA owes over US$24bn to services companies, which are increasingly opting to negotiate directly with PDVSA's joint-venture partners, an expert tells BNamericas.
A spate of recent discoveries and higher production have sparked hopes that Brazil's E&P segment is rebounding from a three-year slump.
The natural gas-fired plant would add 450MW to the country's power generation park.
Three marines and two suspected fuel thieves died in a gun battle in the Mexican state of Puebla on Friday.
The Spanish company will build two storage terminals in Guerrero state to supply the Petacalco power plant.