The structure behind the deal that pressed the Organization of the Petroleum Exporting Countries (OPEC) to increase production is why oil prices climbed in response to the news, says Liberty Oilfield Services Chairman and CEO Chris Wright.

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“Each country can only pro-rata increase their production and the majority of them can’t increase their production at all,” Wright said during an interview on “Countdown to the Closing Bell.”

On Friday, the 14 member nations of OPEC agreed to raise crude oil production by up to 1 million barrels per day (bpd) from next month. Traders were left guessing how much additional oil OPEC targets to pump. OPEC reportedly expects to boost production by 600,000 barrels per day.

Crude prices surged 4.6%, their biggest gain since November 2016.

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