With the winter consumption season, the global oil market return to tight supply and demand pattern. Dong Dandan said, from the price structure of Brent and Brent phase current difference can see out, crude oil inventories rising American has slowed, with the late rise in capacity utilization, crude oil will enter the stage to inventory, to support the WTI.Baocheng sf6 gas price futures research finance director assistant Cheng Xiaoyong said, from the fundamental point of view, the current international crude oil supply slightly surplus, although the winter heating oil demand in North America, as well as the OPEC oil production declined slightly, but non OPEC output growth is accelerating, including South America, Africa and America, especially the development of America shale oil and gas technology, USA oil imports continued to decline, the future may turn into a net exporter of sf6 oil demand, as the world's largest economy is relatively large, so the oil will continue the pattern of excess will continue.From the America crude oil inventories, as of November 15th 388463000 barrels, the highest level since June 28th. Cheng Xiaoyong analysis says, this is also not far from the highest level in history, the previous winter heating oil demand growth will lead to decline in inventory, this year is estimated to supply pressure exceeds demand growth, continued to suppress the WTI crude oil.