The existence of vast area of tight sand rock, low permeability of sand rock and plenteous gas supply are all favorable conditions for the formation of deep basin gas traps.
大面积致密砂岩的存在、砂岩的低渗透性以及充足的天然气供应都是形成深盆气藏的有利条件。
In the West Sichuan Depression with tight sand, the formation mechanism of traps and gas reservoir is quite complicated, resulted from the basin's complex evolution.
在川西坳陷这个致密砂岩领域，圈闭和气藏的形成机理相当复杂，其根本原因在于盆地有着相当复杂的形成与演化史。
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