... 永久式水力坐封封隔器 hydro-set permanent packer ; set permanent packer 坐放式封隔器 set-down type packer ; down type packer 封隔器坐封 packer setting ...
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一般地，经油管柱施加液压压力而不是由操纵油管柱施加机械力使封隔器坐封。
A hydraulic packer typically is set using hydraulic pressure applied through the tubing string rather than mechanical force applied by manipulating the tubing string.
推导出了管柱在井中自重伸长的简化计算式，上提加压式封隔器坐封高度及通常情况下坐封高度的简化计算式。
Formulae strict and simplified including both describing pipe string gravitation elongate in the wellbore and expressing excluding height of take up packers are derived.
Y341 114型自验封封隔器采用了坐封机构和验封机构一体化设计，实现了封隔器坐封与验封同步完成；
Y341-114 self-sealing examination packer adopts integral design of setting and self-sealing examination mechanism, which achieves the simultaneous completion of setting and self-sealing examination.
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