浅层气井日产气量相对低于深部气井，日产水量较大，生产压差大；
The shallow gas wells have lower production than the deep wells, and have large water production.
对定产量生产，跟端压差随时间逐渐增大；
Under the constant production rate condition, the pressure difference at the heel increases with time.
对定产量生产，跟端压差随时间逐渐增大；
Under the constant production rate condition, the pressure difference at the heel increases with time.
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