A relatively small volume of specially prepared fluid placed or circulated in the wellbore.
置于井筒中或在井筒中循环的用量相对较小的特别配制的流体。
Darcy's law indicates that formation pressure of an oil well has some correlativity with wellbore fluid producing volume and bottom hole flowing pressure.
达西定律表明，油井地层压力与井筒产液量和井底流压具有相关性。
Thus reducing acid concentration or the fluid volume will be benefit for rock structure protection, preventing formation collapse and particle migration in near - wellbore region after acidizing.
降低酸液浓度和用量有利于保护岩石骨架，避免近井眼岩石酸化后造成孔隙坍塌和加速微粒运移。
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