RESOURCES ASSESSMENT OF NATURAL GAS IN FORMATIONS (P-T₂) OF NORTHEAST SICHUAN REGION, THE SICHUAN BASIN

The northeast Sichuan region is one of major exploration targets. P-T₂ are superior in the geologic conditions of pool formation, which vertically form into three gas-bearing combination, i. e. P₁,P₂ and T_1-2. The estimation of gas-bearing property and prediction of resources extent were made with the basis of expert systems and exploratory stratigraphy method (GOGS) of natural gas, which arrived at a conclusion that the area has a large quantity of gas resources and a promising exploration prospect. The authors proposed that Daxian-Xuanhan-Kaijiang, Jiu Longshan-Kaijiang and Wangcang are favourable areas for gas exploration.