1�� Research Institute of Petroleum Exploration �� Development��PetroChina��Beijing 100083��China; 2�� College of Earth Sciences��China University of Petroleum��Beijing 102249��China; 3�� Research Institute of Petroleum Exploration and Development --Langfang��PetroChina��Langfang 065007��Hebei��China

Through detailed study of five key oil-sand basins and a preliminary study of the metallogenic condition of sixteen oil-sand basins��the authors summarized the enrichment characteristics of global oil-sand resources�� metallogenic controlling factors and metallogenic models�� The global oil-sand resources were concentrated in three metallogenic structural belts��four metallogenic tectonic districts��six metallogenic basins and the basins with two types in metallogeny�� The concentrations were much higher than those of conventional oil and gas�� The oil-sand resource concentration was as a result of the comprehensive action of high-quality source rocks��multicycle evolution�� oxidizing environment and hydrocarbon degradation mechanism�� The metallogenic model can be divided into the types of slope degradation��paleo-reservoir damage��tectonic uplift and fault dispersal��based on basin type��tectonic evolution and setting��