定封

Y441B型双向锚定封隔器是一种单卡瓦及锥体锚定式封隔器，它利用液压坐封、提放管柱解封。

Model Y441B double anchoring packer is a single-slip double-cone packer , which adopts hydraulic setting and pipereleasing .

可取式液压双向锚定封隔器结构设计

Structural design of hydraulic dual-anchor retrievable packer

该工艺管柱主要由双缸液压锚定封隔器、双缸液压无锚定封隔器、液压丢手工具、换层开关、扶正器等工具组成。

The pipe string includes double hydraulic cylinder with anchorage packer 、 double hydraulic cylinder without anchorage packer 、 releasing tool 、 reversing valve and centralizer .

超静定拱的封拱温度

The temperature of sealing arch for statically indeterminate arch

该桥塞主要由打捞机构、平衡旁通、密封机构、锚定机构、坐封解封机构、锁紧机构等部分组成。

The plug is composed of a fishing mechanism , balance bypass , sealing mechanism , anchoring mechanism and locking device .