UPDATE 1-Brazil's Lula weighing when to announce next central bank chief

(Recasts with comments about central bank succession)

BRASILIA, April 23 (Reuters) - Brazilian President Luiz Inacio Lula da Silva said on Tuesday he has not decided whether to bring forward the name of the next central bank chief or announce it closer to the end of the year, when central bank governor Roberto Campos Neto's term ends.

Talking to journalists in Brasilia, Lula again questioned Campos Neto's performance and called for lower interest rates.

Lula said, however, he has "no problem" with Campos Neto staying in the role until his term ends in December.

Earlier on Tuesday, private sector economists raised their year-end forecast for Brazil's benchmark interest rate to

9.50%

.

Lula also said that the situation of the state-run oil company Petrobras is "calm," denying any crisis after weeks of rumors about a management shakeup while minority shareholders fret about its dividend policy.

The firm's CEO is set to remain at the helm despite friendly fire from parts of Lula's coalition, which prompted intense speculation about his departure.

"I don't see a problem at Petrobras, the fact that there is a disagreement, a misunderstanding is part of the human relationship," he told journalists at the Planalto Palace. (Reporting by Lisandra Paraguassu; Writing by Peter Frontini; Editing by Steven Grattan and Chizu Nomiyama)