The ministry said in a statement that exports to member states of the Commonwealth of Independent States (CIS) declined 2.9%, to 36.92 million tons (271.36 million bbl), and to other countries 0.7%, to 212.99 million tons (1.57 billion bbl).
At the same time, oil deliveries to the domestic market rose 5.7% in the reporting period, to 219.57 million metric tons.
The ministry said the country's natural gas exports fell 3% in 2006, year-on-year, to 201.13 billion cubic meters.
Exports to countries outside the former Soviet Union rose 0.3% to 160.34 billion cubic meters, but supplies to ex-Soviet states fell 14.1%, to 40.79 billion, the ministry said.
The share of Russian energy giant Gazprom in the aggregate of gas output in 2006 fell from 85.9% to 83.9%, year-on-year.