SF,
a very good analysis
I think you have highlighted the reason they expanded their GLNG area to those adjacent nearby tenements so as to get the potential Reserves/Resource UP to give them a better gas margin ((3P+2C)/2train Requirement). Based on the old reserves report from end 2009 I calculated that this margin was only about 91%. They would want it well over 1.5 or so.
Cheers