中国中西部前陆盆地的油气勘探

典型前陆盆地具有双层结构，即前陆盆地发育前的被动陆缘沉积和前陆盆地本身的沉积建造。中国的前陆盆地独具特色，在分类上大多应归于类有前陆盆地。按照发育的时代，中国中西部的前陆盆地可划分为３个世代，中生代产陆盆地的油气是最为现实折勘探目标。

PETROLEUM EXPLORATION IN FORELAND BASINS OF WESTERN AND CENTRAL CHINA

Typical foreland basins have two-bedded structure, in which the sediments of the foreland basin overlay on the old deposits ofpassive continental margin. The foreland basins in China have their own particular features, and most of them belong to thetype of quasi-foreland basin. In term of occurring time, the foreland basins in China can be divided into three generations(Paleozoic, Mesozoic and Cenozoic ). The Mesozoic foreland basins are the most practical targets for the petroleumexploration. The hydrocarbon potential of the foreland basins in China are mainly controlled by two factors: one is therichness of oil source and another is the later preservation- The petroleum exploration of foreland basins shou1d be based onthe comprehensive study of the sequence below the basin, and meanwhile avoid the area where huge mo1asse sedimentsaccumulated.