Abstract:

Analysis of the distribution of three sets of source rocks and their contact relationship with surrounding rocks in Gaoyou sag reveals that the lower part of the first member of the Dainan Formation,the upper parts of the first member of the Funing Formation and the first member of the Taizhou Formation,are the main hydrocarbon carrier beds.The complicated fault systems in combination with sandstone carrier beds form a three dimensional hydrocarbon carrier network,which can be classified into many types according to different carrier modes. The types of these carrier systems decide the distribution of hydrocarbons in the sag.

Key words: complicated fault system, sandstone carrier bed, three dimensional carrier network, type of carrier system, oil and gas distribution, Subei Basin