The difficulty in getting new refineries approved in the U. S. is another reason for the large new Saudi refineries and export of refined product.
There are four; Sasref operated jointly with Royal Dutch Shell, Samref with Exxon-Mobil, and a new one at Yanbu (partner not yet announced). The Rabigh refinery is being enlarged at a cost of $8 billion, with Sumitomo of Japan as the partner. Upgrading at Ras Tanura for $1.3 billion is rumored to be even further increased.
(Saudi Aramco also maintains 1.6 million bbl/day refining capacity overseas and increase in China is on the way).

Most of this from Saudi Refinery Investments

The economic downturn has put a damper on investment into so-called green energy sources; petroleum will remain a major energy source for the next twenty years.
The downturn has also stopped new investment in Canada's oil sands, much to the benefit of the environment there.