(EnergyAsia, May 26) — The Saudi Arabian Oil Company (Saudi Aramco) and ConocoPhillips have signed a Memorandum of Understanding (MOU) to evaluate the construction of a 400,000 barrel-per-day full-conversion refinery in Saudi Arabia’s Yanbu city.   The refinery would be designed to process Arabian heavy crude and produce high-quality, ultra-low sulphur refined products that meet…