US gas drillers, battered by the lowest prices in 17 years, find another release valve for their output: Canada. (Bloomberg) — U.S. gas drillers battered by the lowest prices in 17 years have found another release valve for their output: Canada. Over the past five years, the shale boom that unlocked vast supplies of natural gas across North America has tripled pipeline shipments from the U.S. to Mexico, and spurred the first seaborne exports from the lower 48 states. Now, pipeline companies led by Spectra Energy Corp., TransCanada Corp. and Energy Transfer Partners LP are gearing up to more than double the flow into Canada by 2027, according to the Canadian Energy Research Institute. The push begins next year, with plans to open or expand at least three major pipelines and reverse the flow northward on a fourth. Meanwhile, TransCanada may be going a step further, engaging in acquisition […]