In 1984, the Shachan-2 well, located in Tarim Basin and with a large amount of oil and gas flow, was discovered. It set forth the significant breakthrough as an important milestone in prospecting for oil present in paleozoic marine facies in China. After the Shachan-2 well discovery, many oil fields, including the Tahe Oil-gas Field were discovered in Tarim Basin and a new oil-gas theory of the paleozoic marine facies was advanced. These processes reflect independent innovation in the exploration of paleozoic marine facies oil-gas field. It is of great help to further oil-gas exploration in the paleozoic marine facies field.