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排液是试油压裂酸化等井下作业的一个重要工作内容,排液的不彻底和不迅速,将加大对地层的二次伤害,因此如何快速、彻底地将施工液体排出,一直是井下人孜孜不倦的追求。液氮泡沫流体排液是一种负压洗井技术,是油井增产的一种有效手段,能解决低渗透油田的洗井问题.保护油层,提高产量。
Drainage is an important part of the downhole operation such as fracturing and fracturing of the oil. The incomplete and rapid discharge of liquid will increase the secondary damage to the formation. Therefore, how to quickly and thoroughly discharge the construction liquid has been a problem People tireless pursuit. Liquid nitrogen foam fluid drainage is a kind of negative pressure well flushing technology, which is an effective measure to increase production of oil wells, which can solve the well flushing problem of low permeability oilfield, protect the oil layer and increase the output.