MOSCOW, May 29 (Reuters) - Russian Energy Minister Alexander Novak believes that it is too early to write off OPEC despite internal differences within the group, he said on the ministry's Twitter feed.

Novak also reiterated that the issue of a possible oil production freeze is no longer relevant after a rise in oil prices.

(Reporting by Vladimir Soldatkin; Editing by David Goodman) ((vladimir.soldatkin@thomsonreuters.com; +7 495 775 12 42; Reuters Messaging: vladimir.soldatkin.thomsonreuters.com@reuters.net))