Related: Poor-Performing Energy Sector is Bouncing Back

Declining prices in recent years have prompted scores of major oil producers to rein in capital spending. Technological improvements and greater efficiency has helped U.S. shale producers pump out crude oil at lower margins – some say it is now profitable at less than $50 per barrel. Additionally, companies are finding easy access to credit and private-equity firms have bought out struggling companies, which have kept production flowing.

“Oil prices have rallied in recent weeks as OPEC supply cuts help to rebalance an oil market plagued by oversupply. More recently, growing tensions between Saudi Arabia, OPEC’s largest oil producer, and some of its neighbors helped prices break above $60 a barrel for the first time since 2015,” according to Bloomberg.

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