UPDATE 3-Putin's oil tsar heading to Vienna as OPEC meets
* Rosneft chief Vienna visit sparks OPEC coordination talk
* Venezuela tries to rally support for oil output cut
* Moscow has declined pleas to join output cuts in past (Recasts)
By Katya Golubkova and Alexandra Ulmer
MOSCOW/CARACAS Nov 17 (Reuters) - Top Russian oil producer Rosneft's Chief Executive Igor Sechin will fly to Vienna on Nov. 25, just two days before the Organization of the Petroleum Exporting Countries meets in the city to debate the plunge in oil prices.
The surprise announcement from the state-backed firm raised speculation that Sechin, a close ally of President Vladimir Putin, will discuss coordinating with OPEC to try stem the near 30 percent drop in oil prices since June.
Venezuela said on Monday its Foreign Minister Rafael Ramirez and Russian Energy Minister Alexander Novak had met in Moscow and discussed "the need to coordinate actions in defence" of prices in the oil market.
But Russia, the largest oil exporter outside OPEC, has so far made no statement about joining any possible production cut, even as the price drop threatens to tip its sanction-hit economy into recession. Previous overtures between the producer group and Russia have failed to produce results.
Oil's drop below $80 a barrel has raised the focus on the OPEC meeting, with traders billing it as the most pivotal since the 2008 financial crisis. Continuación...