Both countries have pledged to ensure steady gas flows to the Europe Union, which relies on Russia for one quarter of its gas supplies, despite differences over pricing and the ownership of Ukraine's strategic gas pipeline system.

Kiev and Moscow have been locked in difficult gas talks for the past year as Ukraine, whose fragile economy is suffering from a budget deficit, seeks a cut in the cost of Russian gas, which is set to rise to $416 per thousand cubic metres (tcm) in the first quarter of 2012 to match what the EU is paying.

The price is currently around $400 per thousand cubic metres. Ukrainian President Viktor Yanukovich said last week he considered $250 per tcm the highest acceptable price.

But Russia has been adamant in saying Ukraine must stick to the multi-year contract signed in 2009. Moscow also faces a budgetary squeeze next year as it is set to embark on a public spending spree ahead of March 4 presidential elections, which Prime Minister Vladimir Putin is poised to win.

On Friday, Gazprom Chief Executive Officer Alexei Miller and Ukrainian Energy Minister Yury Boiko met in Russia's second-largest city of St. Petersburg.

"The participants have taken note of the positive and constructive character of the 2011 talks and good perspectives for the next round of talks, which will take place on Jan. 15," Gazprom said in a statement on Monday.

Unlike 2009, there is no clear deadline for a deal, which is seen as important to securing shipments of gas to Europe by establishing a price and joint control of the transit pipelines that carry more than half of Russian gas deliveries to the EU.

But Gazprom has little incentive to hurry a deal while it stands to gain leverage in the talks as Ukraine's fiscal position worsens. It also continues to collect the higher price stipulated in the current contract in the meantime.