Abstract:

The northwest margin of Junggar Basin underwent multiplestage tectonic movement，which provides favorable conditions for the formation of oil sands.The

northwestern margin of Junggar Basin experienced the multiphase tectonic movement，which provided the favorable condition for oil sand forming.Oil sand outcrop appears in

many places in this area.So an indepth study on oil sand characteristics and reservoirforming model is important to guide the oil sand exploration in this

area.Taking the oil sand in Hongshanzui area，northwestern margin of Junggar Basin as example，the reserach analyzes physical characteristics and oil yield characteristics

of oil sands with physical and chemical test，the oil from the oil sand geologic reserves in Hongshanzui area is elementarily calculated.In addition，the reservoir

forming model of oil sands is disccused by studying geological settings and structure movement，and the favorable sandbody distribution and physical characteristics

illuminated.Unconformity surfaces and faults system are wideranging in this area，which controls the oil and gas migration.The two master factors above are crucial

influence on oil sands forming in this area.

Key words: oil sand, characteristics, total resources, reservoirforming model, Junggar Basin