Regulator ANP approved four additional companies - Petrogal, Greenconsult, Petroil and PetroRecôncavo - at its final registration meeting last.
The company reported a 17.9% decline in net profits for the second quarter against 2Q16.
"It is equipment made to last 15-20 years, and soon after their installation they had problems," the hydrocarbons minister told lawmakers recently regarding the situation at the Esmeraldas refinery.
The CEO of Argentina's state oil company is to step down amid leadership restructuring, YPF is to sell its Metrogas stake, and Tierra del Fuego government extends the Magallanes concession.
Congress, which is dominated by the ruling party, stripped vice president Jorge Glas of immunity so he can be tried for corruption..