An increase in new production projects and a shale boom could add one million barrels per day to oil output by in the coming years, creating an oversupply situation and a big problem for efforts by major oil producing nations to support prices, according to Goldman Sachs analysts.

The analysts expect 2017 to 2019 to be years that would see record production capability coming on stream. As a result, the Organization of the Petroleum Exporting Countries must now weigh the relative benefit of stability by extending production cuts versus the risk of long-term market share loss, they wrote in a note.