The Equivalence Of 1 Barrel Is There Any Simple Equivalence Factor Between Tones Of Oil Equivalent And Barrel Of Oil Equivalent?

Is there any simple equivalence factor between Tones of Oil Equivalent and Barrel of Oil Equivalent? - the equivalence of 1 barrel

Results of research on the network and found a factor of 7.1-7.4 (http://nextbigfuture.com/2008/07/deep-burn-and-seriously-scaling-nuclear.html), but no source.