(EnergAsia, October 12) — World oil supply declined by 845,000 b/d in September to 83.8 million b/d, said the Paris-based International Energy Agency (IEA) in its monthly report.   Hurricanes have shuttered 1.2 million b/d of US Gulf crude production, prompting 300,000 to 400,000 b/d downward revisions to non-OPEC supply for 2005 and 2006. Non-OPEC…