Shell, Aramco U.S. refining breakup lets both pursue ambitious goals

* Companies split up 3 major refineries, infrastructure
* Aramco to include assets in downstream IPO -sources
* Shell (LSE: RDSB.L – news) to use assets for $30 bln sales programme
By Ron Bousso
LONDON, March 17 (Reuters) – The breakup of Royal Dutch Shell’s and Saudi Aramco’s giant U.S (Other OTC: UBGXF – news) . refining joint venture draws a line under an often rocky relationship and allows Aramco to accelerate an ambitious public offering and Shell to push ahead