All this talk of trade wars is one more thing for U.S. oil and gas producers to worry about. That’s because overseas exports are the only thing balancing natural gas and NGL markets, and increasingly crude oil also relies on exports to clear light-sweet volumes from U.S. shale plays. More than half of propane produced in the U.S. already moves out of the country via ship, with China, Japan and South Korea among the highest-volume destination markets. Only about 3 Bcf/d of natural gas has been exported as LNG over the past few months, but there was only one lower-48 LNG export terminal operating until last week. In a year there will be six terminals pumping out LNG to overseas markets. And so far this year, an average of 1.4 MMb/d of crude oil — one-seventh of U.S. production — has reached the waterborne export market, not including all the gasoline and distillate exports. As exports assume an ever-larger role in U.S. hydrocarbon markets, it is important to consider ramifications of possible constraints on exports, including the potential for trade retaliation in response to President Trump’s recently announced tariffs on steel and aluminum. Exports, one of the key topics we’ll consider at our upcoming School of Energy — Spring 2018, is the subject of today’s blog.