Therefore, steady productivity binomial equation cal be applied in gas well productivity evaluation in compound formation, in which permeability in outer zone is much higher that inner one.

• 通过分析证明，稳定产能方法透用于外区渗透性高于区渗透率的复合地层中气井产能评价，而对于外区渗透性变差的气井，用稳定产能方法很难指导现场气井生产。