Abstract: Ascertain low permeability gas pool′s geological reserves in early stage are very important to establish development program,design development facility and evaluate gas pool′s value.The prediction of low permeability gas pool′s reserves always was a hard work.Contrapose this problem,the paper presented flowing material method,oil reservoir influence function method and gas recovery method to predicted low permeability gas pool′s geological reserves in early time.Base on the case analysis the self apply condition and relative merits of the three methods in the paper.

Key words: low permeability pools, reserves prediction, geologic reserve, flowing material balance method, oil reservoir influence function method, gas recovery curve method