The share price of Australian upstream company Santos fell nearly 7.8% to A$6.63 yesterday after it reported a 36.2% plunge in first half net earnings brought on by a fire at its Moomba gas plant on January 1. Adelaide-based Santos’ net profit fell to A$86.5 million that included A$14 million in one-off restructuring costs. (US$1=A$1.4)….