Oil moved higher on Friday as OPEC and its allies agreed to deepen oil production cuts to 500,000 barrels a day through to March 2020. This brings the total production cut to 1.7 million barrels a day.

U.S. West Texas Intermediate crude futures gained 77 cents, or 1.3%, to settle at $59.20 a barrel. For the week WTI gained more than 7%, for its best week since June. During Friday's trading session Brent gained 1.6% to settle at $64.37.

Saudi Arabia's Energy Minister Prince Abdulaziz bin Salman told reporters on Friday that the oil-rich kingdom's quota would be an additional 167,000 barrels per day. He also said that the kingdom would continue to exceed its quota by 400,000 barrels a day, which means the overall production cut will actually be closer to 2.1 million barrels a day.

The country is OPEC's de facto leader, and has been adamant that those who were previously overproducing — such as Iraq and Nigeria — comply with the group's quota. Prince Abdulaziz bin Salman said that the country's additional and voluntary cut would be contingent on other countries abiding by their allocation.

Russian Energy Minister Alexander Novak said Moscow's quota would be 300,000 b/d during the first three months of 2020. This measurement excludes gas condensate — a high-value light crude extracted as a by-product of gas production.

The energy alliance said it plans to review the policy at an extraordinary meeting on March 5-6.