可回收式液压坐封过电缆封隔器主要用于电潜泵完井。封隔器坐封锁定机构采用带弹簧载荷的内卡瓦。下部机械式外卡瓦能够使封隔器保持坐封状态，并能承受向上和向下的作用力。密封胶筒能保证封隔器在高压或者低压状态下以及不规则套管内完好坐封。解封方式分为向上直拉油管解封和液压解封两种。

主要特性

◎ 顶部通过螺纹连接电缆密封穿越器；

◎ 其余通孔可以连接放气阀、化学注入管线、液压控制管线以及井下监视系统；

◎ 经过表面热处理的双向卡瓦可使封隔器承受向上或向下的作用力；

◎ 上部具有压力启动的水力锚可使封隔器承受来自井下的压差；

◎ 坐封压力和解封力可通过剪切销钉调节。

主要优点

◎ 坐封压力低；

◎ 直拉油管解封或液压解封；

◎ 允许调整剪切销钉的数量调整坐封压力和解封力；

◎ 允许现场调整解封力；

◎ 有效降低电潜泵完井的费用。

RETRIEVABLE HYDRAULIC-SET ESP PACKER

INTRODUCTION

Retrievable hydraulic-set ESP packer is used for ESP completion. The inner clip with spring load is used for packer to set lock framework. The lower mechanical outer clip can keep the packer in the state of setting, and it can endure the force acted on the Packer upward and downward. The seal elastomeric cylinder can ensure that the packer is well set under high pressure or low pressure and in irregular casing. Release method of Packer is divided into pulling the tubing string upward and hydraulic release.

FEATURES

◎ A pack-off power cable is provided for thread connections on the top of Packer;

◎ Additional bores can be attached to gas vent valve, chemical-injection lines, hydraulic pressure   control lines and wellbore monitoring devices through the packer;

◎ Double-seal elements have the same or different hardness;

◎ Bi-directional slips with surface heat treatment can endure the force acted on the Packer upward and downward;

◎ The upper pressure-actuated hydraulic slips can make the packer withstand higher pressure differentials from downhole;

◎ Setting and release force can be adjusted by Shear screws.

BENEFITS

◎ Low setting pressure;

◎ Release by pull straight or hydraulic release;

◎ Allows varied setting pressure with varied numbers of shear screws;

◎ Allows adjust setting and release force by adjustment of shear screw number;

◎ Allow adjust release force on site;

◎ Efficiently reduce the overall costs of submersible pump completions.

Note: Other specification products are available