It also said that compliance with the global oil production cut deal by OPEC and non-OPEC nations was at 129 percent in December and averaged 107 percent over the whole of last year.
Saudi Arabia`s energy minister urged global oil producing nations on Sunday to extend their cooperation beyond 2018, but said this might mean a new form of deal rather than continuing the same supply cuts that have boosted prices in recent months.
More about: #OPEC