1. Geological Exploration Institute of Aerial Photogrammetry and ��emote Sensing Bureau��Xi'an 710054��China; 2. State Key Laboratory of Continental Dynamics��Northwest University��Xi'an 710069��China; 3. CNOOC ��esearch Center��Beijing 100027��China; 4. Xi'an Financial Services Institute��Xi'an 710100��China

On the basis of synthesizing regional geologic information and the earlier researches of the Mid- - Norway Continental Margin��we summarized the hydrocarbon source rock��reservoir��source- reservoir- caprock as- semblage and petroleum migration characteristics��analyzed its exploration potential��and provided basis for related company involved in the petroleum exploration in this area�� The authors found that the main source rocks occurred in the Lower Jurassic deltaic shale of Are Formation and the Upper Jurassic marine shale of Spekk Formation�� where the Upper Jurassic marine shale is considered to be the major source rocks�� The reservoirs are found in turbidity sandstone of Cretaceous- - Neogene and shallow marine sandstone of Fangst Group in the Middle Jurassic rift stage�� Shallow marine sandstone of Fangst Group in the Middle Jurassic rift stage is considered to be the main reservoir�� This area develops two types of source rock- reservoir- seal assemblages of the rift stage: the below- source rock and above- reservoir��above source rock and below- reservoir�� The cracks��grooming��faults are channels for a short distance and the unconformity surfaces or connected sand bodies are channels for a long distance of petroleum migration�� The Mid- - Norway Continental Margin is rich in hydrocarbon��its reserves reaches about 7. 3 billion barrels of oil equivalent and the undiscovered fields may be up to 36�� With the gradual expanding oil and gas exploration�� there is bound to be major oil and gas discoveries��