OPEC mostly kept its members in line during the first month of coordinated production cuts, but the cartel faces a test of its will this spring.

The Organization of the Petroleum Exporting Countries in January managed to cut about 90 percent of the 1.2 million barrels it promised to remove from the market last year, according to S&P Global Platts and others that track shipments. Those efforts have helped stabilize global oil prices above $50 a barrel.

However, OPEC members have a long history of cheating on quotas. They are likely to flout the agreed-upon cuts as the summer driving season sends prices higher, said Victor Shum, who leads IHS Energy's oil market consulting practice in Asia.