Abstract: In comparison with the traditional methods, the BP artificial nerve network method possesses considerable superiority and applicability and it isn' t in need of various steady percolation model based on the percolation theory of gas reservoirs after fractu-ring or numerical value simulation. The BP artificial nerve net-work method is only in want of the primary data of the target gas
well when forecasting absolute open flow and much practical tes-ting data of a few gas wells as the samples in the same reservoir,which provides a new feasible way for the exploitation of low-per-meability gas wells economically, speedly and eflectly.

Key words: gas wells after fracturing, absolute open flow, BP artificial nerve network method