For a second consecutive session, the markets are trading inside last Friday's wide range which tends to indicate trader indecision and impending volatility. This follows a 7.3 million barrel decline in the previous week. Analysts were expecting a build of 2.461 million barrels for the week. The Organisation of the Petroleum Exporting Countries (OPEC) expects demand for its oil to fall next year, as global supplies, particularly in USA shale continue to rise.