Bechtel has a license agreement with
Pemex Refinación, the refining subsidiary of Mexican state
oil company Pemex, for the process design of a
delayed coking unit (DCU) complex for the
new Tula refinery project in Hidalgo, Mexico. The DCU
complex will use Bechtels ThruPlus coking technology, a proprietary process
for upgrading heavy oil into high-value, light hydrocarbon liquids.