SEDIMENTARY FACIES OF CARBONIFEROUS IN SICHUAN-HUBEI AREA AND ITS PETROLIFEROU-SNESS

According to Lithogy, texture, structure of Carboniferous in Sichuan-Hubei area, three facial regions are identified. 1.continental facial region; 2.onshore facial region; 3.carbonate platform facial region. The onshore facial region is well developed in Eastern Sichuan,which is a prospecting zone of oil generation and oil storage. The carbonate platform facial region appears to be a promising reservoir. By analysing the distribution of facial regions, it is suggested that in view of prospecting, gas is more favorite rather than oil; in view of strati-graphic sequence, the Middle Carboniferous System is the best; in view of area, it is the Eastern Sichuan, Western Hubei, and Jianghan are more important.