Reuters Blogs (blog) | Mapping world oil transport Reuters Blogs (blog) As this Reuters graphic shows, roughly half of the world's oil production is moved via a web of fixed maritime routes that encircle the globe. But the act of moving so much oil moves along the same path creates shipping chokepoints at straits and canals. Oil prices fire up as Yemen becomes new battleground in Saudi-Iran rivalry ... Oil Prices Slip Friday But Gain Big on Week Yemen conflict raises risks for top oil route |