The U.S. shale boom was one of the reasons why oil prices didn’t soar to triple digits when more than half of the oil production of the world’s top oil exporter Saudi Arabia was knocked offline by attacks in the middle of September, Andy Critchlow, head of news in EMEA for S&P Global Platts, said in a blog post on Monday. The September 14 attacks on Saudi oil infrastructure knocked 5.7 million bpd—or 5 percent of global oil supply—offline. Immediately after the attacks, the oil market went into panic mode early last…