Aramco has become its own best domestic customer for naphtha. Output is set to receive a further boost from the start-up of the 400,000 b/d Jazan refinery.

The start-up of two key Saudi Aramco petchems JVs over the last two years has more than counterbalanced increased naphtha production. The units have increasingly eaten into naphtha exports and with new units online in recent months, shipments are set to fall further.

Aramco’s Sadara JV with US firm Dow Chemical ramped up...