UPDATE 1-Rosneft's Sechin says Russia has potential to raise oil output
* Russian oil output at record high of 11.11 mln bpd in Sept * Russia, OPEC talk cooperation * Rosneft Sechin says Moscow may add another 4 mln bpd in future (Adds details, quotes, background) By Oksana Kobzeva VERONA, Italy, Oct 20 (Reuters) - Russia, already the world'
