The Saudi petchems giant and the US integrated major are looking to use cheap shale gas to feed a world-scale cracker on the US Gulf coast. Aramco JV Petro Rabigh plans to add new units.

Sabic and ExxonMobil have announced that they are studying prospects for jointly building an ethylene plant and linked derivatives units in Texas or Louisiana, to take advantage of relatively low cost locally produced gas from shale formations.

ExxonMobil says that the proposed cracker will have capacity...