So the impact of remains water should be considered in study ofgas seepage law in low permeability media.
因此，在研究低渗透介质中气体渗流规律时要考虑残余水的影响。
2
Aqueous trapping display in two aspects, one is the reduction of mobile gas and the degression ofgaspermeability, the other is the decline ofgas production rate and the decrease of gas recovery.
The existence of vast area of tight sand rock, low permeabilityof sand rock and plenteous gas supply are all favorable conditions for the formation of deep basin gas traps.