Bolivia might be able to get sea-access again, after losing it in the War of the Pacific (1879–1883), when Chile defeated it and Peru and stole it's coast, making Bolivia a landlocked countyr.
This is because it's negotiating with Chile to get sovereign access (basically an enclave in Chile) to a port in Pisagua (small city with 260 people, you can see it on streetview, and it does look like a place where bolivians would live - except for the sea), plus land to build a plant for its natural gas and port facilities there.
This would allow them to export gas not only to Brazil and Argentina (which leaves them very dependent on them, and limited and poorer when they don't buy much, like now).
http://archive.is/dyarr
Another option is getting access to the port of Ilu, in Peru. But that's a smaller port (although in a nicer, decent-looking city), but this pot is both smaller and would still leave Bolivia dependent on Chile, since it mostly uses Chilean ports anyway.
If they manage to do so, it'll be cheaper to export gas to the whole world, since they won't have to pay to use Chilean ports and won't be so affected by chilean politics (like last month, when they lost $100 million cause lazy chileans decided to go on strike for 10 days, leaving 1000 bolivian vehicles stranded at the border).
What does Chile gain with this? Bolivia woudl drop it's territorial clains agaisnt Chile at the Hague.
They failed at negotiating this before because Bolivia also demanded sovereign access over the road connecting Pisagua to Bolivia, which would bissect Chile's territory, but Bolivia is more flexible now that their contract to export gas to Brasil will end (2019, and it won't be renewed) and their sales to them and Argentina are dropping, and Bolivia had a trade deficit in Brazil for the first time in 15 years. Natural gas makes up 90% of bolivian exports to Brazil
Argentina is also buying less from Bolivia, because shortfalls during the winter made them question Bolivia's reliability to provide their energy, and the Macri administration is trying to make Argentina into a gas-exporting nation.
Everything may change after Chile's elections in November tho, as the socialist government is expected to end, with former president Sebastian Pinera leading the polls