The world's largest listed oil company to honour its export deals.
BP 'welcomed' the interest from the state company in its holding in Russia's third largest oil producer.
'This is a very good signal to the Russian and international energy markets', Russian president stressed.
'The contract in current market parameters is absolutely unprecedented', Putin told investors at the annual Saint Petersburg International Economic Forum.
Leading oil producer Rosneft burns spilled oil to 'minimise ecological damage'.
A deal would be the biggest Chinese equity participation in onshore oil in Russia.
The 15th INNOVUS forum opens over two days with 50 events aimed at discussing Russia's Innovative Development Strategy until 2020.