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The companies form part of the QGIT consortium, which had been contracted to build a natural gas processing unit at the complex in Itaboraí, near Rio de Janeiro.
Petrobras will also seek bids to build a utility centre to provide electricity and water to the complex, the news service reported.
It added that three companies had shown interest in finishing work on a 165,000b/d refinery, which is the centerpiece of Comperj's US$2.3bn first phase.
Petrobras removed the project's larger second phase from its five-year investment plan in June.
Originally earmarked to be ready in 2013, the complex is now not expected to go online until early 2019.