Hugh Pickens DOT Com writes: Matthew Philips writes at Bloomberg that US Secretary of State John Kerry landed in Geneva on Friday to begin negotiations with Iran over its nuclear weapons program and there is sudden optimism that a deal is in the offing. But the simple fact is that Iran would not be coming to the negotiating table without the US oil boom. Over the last two years, the US has increased its crude production by about 2 million barrels a day. According to a recent report from the Congressional Research Service (pdf), Iran’s oil exports have been cut in half since 2011 (PDF), from 2.5 million barrels per day to a bit more than 1 million today. As a result, Iran has had to halt an equal amount of production. “I think it’s pretty clear that without the U.S. shale revolution, it never would have been possible to put this kind of embargo on Iran,” says Julius Walker. “Without US production gains, I think we’d be looking at $150 a barrel." Instead, international prices have hovered around $110, and are less than $100 in the US. According to data from Bloomberg, the combined carrying capacity of oil tankers leaving Iranian ports last month dropped 22 percent from September. “They’re having a very hard time finding buyers,” says Walker. If a deal gets done, the trick will be to ease Iranian oil back onto the broader market without disrupting prices. If not managed properly, flooding the market with Iranian crude could carry its own negative consequences by suddenly making fracked oil in the US unprofitable.