US tight oil: Too light, too sweet
International buyers' appetite may start to wane in 2018
US light tight oil output is transforming world oil markets. After falling during the 2015 oil price crash, total American production - of which shale is now a major source - surged back onto markets, and the Energy Information Administration (EIA) expects output to rise another 0.5m barrels a day in 2018, to a record 9.9m b/d. Much of this new production is finding its way onto global markets, and exports now regularly run over 1m b/d. But can there be too much of a good thing? Specifically, with Opec's light sweet crude exporters Libya and Nigeria staggering back from extended production outages, and big Persian Gulf producers tightening availabilities of middle-gravity sour crudes, i
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