Representatives of OPEC Member Countries (Heads of Delegation) meet at the OPEC Conference to coordinate and unify their petroleum policies in order to promote stability and harmony in the oil market. They are supported in this by the OPEC Secretariat, directed by the Board of Governors and run by the Secretary General, and by various bodies including the Economic Commission and the Ministerial Monitoring Committee.

The Member Countries consider the current situation and forecasts of market fundamentals, such as economic growth rates and petroleum demand and supply scenarios. They then consider what, if any, changes they might make in their petroleum policies. For example, in previous Conferences the Member Countries have decided variously to raise or lower their collective oil production in order to maintain stable prices and steady supplies to consumers in the short, medium and longer term.