The structural reservoir in piedmont thrust zone and structural-lithologic reservoir in oil-rich sag of southern margin of Jiuquan basin are two main exploration fields in the basin.

The results show that strike-slip zone is potential for finding structural reservoir,and it is pointed out that the Taipingzhuang structure in the north of Xiaokuan faulted zone is the target for further structural reservoir exploration.

In post-depositional structural transposition zone, central distribution of a variety of non-structural reservoirs takes place due to variation of reservoir characteristics.

The non-structural reservoirs are the strate lithology and complex .

Given depositional features of Jurassic and Cretaceous, this paper presents the dominant factors that shape the non-structural reservoir and favorable areas searching for such reservoirs.

In terms of structural development,development history,and impacts of structure on oil/gas migration and accumulation,relations between structure and formation of oil/gas reservoirs were established for Gucheng region in Miyang depression on the basis of the restoration of basinal evolution of the 3rd member of Hetaoyuan formation time.

The hydrocarbon reservoir of Es4 in Wang 73 area is domina- ted by lithologic reservoir and structural-lithologic reservoir.