关键词: 柴达木盆地, 油气聚集规律, 勘探潜力, 勘探方向

Abstract: Qaidam Basin is located in the north of Qinghai-Tibet Plateau.It is one of the seven petroliferous inland basins in China.There are four big hydrocarbon-bearing systems of Carboniferous,Jurassic,Tertiary and Quaternary in the basin.The north edge,the west and central areas are the big prospective regions for oil exploration.The oil and gas reserves are up to 4200 million tons of oil equivalent in Qaidam Basin.The hydrocarbon accumulation was controlled by source rock,structure superposition and qualities of reservoirs.Qaidam Basin will have great potential and broad prospect for exploration because of its low degree of exploration at present.According to the factors controlling the oil and gas reservoirs in different areas,the southern part of west area,the edge of northwest to the front of Altun mountain and the north edge to Lenghu No.3 area may be the key prospective areas for exploring clastic rock oil reservoirs,and the north of western area may be the key area for exploring unconventional oil reservoirs.The Tertiary of the west and the central area as well as the deep of the north edge will become the new areas for the exploration of natural gas.

Key words: Qaidam Basin, hydrocarbon accumulation, exploration potential, exploration prospect