Well, that is if you include ethane and other gaseous hydrocarbons.
With Western Europe turning to other sources for NG, Russia is pursuing China and countries in Africa as customers. Of course, China has some NG reserves—albeit 1/10th of Russia's. And Russia will be competing with Iran, which has the greatest known reserves, and Saudi Arabia for sales. And probably Turkmenistan, to.
The market for NG is soft right now, which isn't helping Moscow, but as the world continues to switch from coal as our primary fossil fuel, demand will rise for NG. Plus it is an essential component in the manufacture of many petrochemicals, including plastics such as polypropylene. And it can be reformed into gasoline—albeit not without an increase in carbon emissions owing to the energy required by the reforming process.
And, should carbon capture and sequestration become economically viable, NG is a great source of hydrogen: you just strip off those pesky carbon atoms and shove them where they won't bother anybody for, oh, a hundred millennia or so.