July 7 (Reuters) – U.S. oil and gas major Exxon Mobil (XOM.N) signaled on Tuesday that changes in oil prices would boost its second-quarter upstream earnings by $3.5 billion to $3.9 billion. Benchmark Brent crude prices averaged at $93.58 a barrel during the April-June quarter, up 4.8% from the prior quarter. The U.S.-Iran war injected … Read more