UPDATE 1-Russia and Venezuela to do debt restructuring deal by Nov. 15 - TASS

(Adds context, details)

MOSCOW, Oct 15 (Reuters) - Russia and Venezuela will finalise a debt restructuring deal for Caracas by Nov. 15, the TASS news agency cited Venezuela's ambassador to Russia as saying on Sunday.

"We are working on the document," TASS cited Ambassador Carlos Rafael Faria Tortosa as saying. "We expect that we will need a month to conclude it and that by Nov. 15 this work should be finished."

The RIA news agency cited Russian Finance Minister Anton Siluanov as saying on Saturday an outline agreement had been reached, but more time was needed to complete talks.

Russias largest oil producer, Rosneft, is buying a growing volume of Venezuelan crude and other products while extending loans to Venezuelan President Nicolas Maduros government.

Rosneft said in August it had made around $6 billion in pre-payments to the Venezuelan state oil company PDVSA and had no immediate plans to make any further advance payments soon. (Reporting by Andrew Osborn; Editing by Mark Potter)