RIO DE JANEIRO, June 12 (Reuters) - Petrobras

will likely announce changes to its executive team by next week,

Chief Executive Magda Chambriard told reporters on Wednesday,

adding she intends to "adjust the profile" of directors at the

Brazilian state-run oil giant.

The move was widely expected after Chambriard, a former head

of oil and gas regulator ANP, was tapped by President Luiz

Inacio Lula da Silva last month to replace former CEO Jean Paul

Prates.