The state oil firm was Brazil's most indebted company at the end of Q2, and has a 2017-18 divestment target of US$21bn.
Companies have until September 13 to express interest in the transaction, which is expected to be completed this year.
Prumo says the oil major has failed to meet obligations for a 20-year take-or-pay crude trans-shipment agreement.
The state oil company plans to award the power transmission component in December.
Brazil's state-run oil company said it would lift the price of cooking gas by 12.2% and LPG by 2.5% on Wednesday.
BNamericas spoke to EDF Chile CEO Marc Girard to get the latest on the Penco-Lirquén offshore LNG regasification terminal under development in central-southern Biobío region.