Rosneft's report said it would drill an exploration well in Myanmar, which has been rocked by protests since a military coup in February, at block EP-4, which the Russian oil firm inherited after it bought Bashneft in 2014.
Bashneft was one of several foreign companies awarded Production Sharing Contracts by Myanmar's government for 16 onshore energy blocks.
Tensions between Russia and Ukraine have flared in recent weeks after years of strain began in 2014 when street protests in Kyiv resulted in the flight of the pro-Moscow president and annexation of Crimea by Russian forces.
The data also showed that the Serena M tanker shipped 30,000 tonnes of diesel to the port of Yuzhny from Turkey in the second half of March.
Rosneft and Surgutneftegaz decreased their oil supplies to Poland and Germany amid price disputes with European refiners following the fall in profitability of Druzhba pipeline supplies compared with seaborne Urals exports.
Oil exports via the route may decline further in February amid the ongoing price row.