Forty-four North American oilfield services companies had declared bankruptcy this year through late July, Haynes and Boone LLP said in a report, and the sector appears primed to hit a huge debt wall in the next five years. Moody's Investor Service warned that speculative-grade companies are particularly vulnerable as almost $110 billion of debt matures or expires between now and 2021. The burden will nearly triple to $21 billion from 2017 to 2018, the company said in a report.
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