随着油田开发的进行，地层压力逐渐下降，水平裂缝趋于闭合，渗透率大幅下降，严重影响了生产能力。
With continuing an oilfield development, its formation pressure tends to decline along with the horizontal fractures being closed, the permeability drawdown and the productivity being damaged.
随着异常高压气田开发过程的进行，地层压力逐渐下降，进而诱发岩石渗透率损失是不可逆的。
The permeability loss is not reversible since the reservoir pressure decreases gradually as gas exploitation is conducted in abnormal pressure gas reservoirs.
但随着地层压力逐渐下降，产水量逐渐增加，现场试验表明井下节流工艺有助于提高个别气井的携液能力。
However with the reservoir pressure decreasing and water production gradually increasing, field test show it could be used to enhance entrainment capability of well tube.
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