Butane and propane are the only hydrocarbons originating from 2 sources:
LPG from gas and oil fields
LPG from refined crude oil
Field LPG
In 2005, Total Group's production of LPG from natural gas and the stabilization of crude oil represented more than 3.1 million tons
Refinery-produced LPG
The number one refiner in Europe, Total Group produced 2.4 million tons of LPG in 2005 in the 9 refineries it fully owns and the 7 refineries it partially owns.
Outside of Europe, the Total Group produced 240,000 tons of LPG.