MOSCOW, March 28 (Reuters) - Russia's Rosneft, theworld's top listed oil company by output, plans to spend around1 trillion roubles ($15 billion) annually on its investmentprogramme in 2016-2018, using a significant part on maintainingoutput at its mature fields.
Igor Sechin, Rosneft chief executive, also told PresidentVladimir Putin on Monday that implementation of the investmentprogramme will allow the company to honour its obligations underlong-term oil supply deals, Rosneft said in a statement.
Sechin added that Rosneft operating costs were at 156-166per barrel of oil equivalent last year, or $2.5-$3.0 per barrel.
($1 = 68.3875 roubles) (Reporting by Katya Golubkova; editing by Vladimir Soldatkin)