一种永久封隔器，用于防砂完井的最下部，起到承托管柱和砾石的作用。通过坐封工具 推动外筒， 剪断坐封销钉，推动卡瓦，压缩胶筒坐封。根据不同井型，可以用电缆下入，也可以用钻杆下入。

主要特性

◎ 金属材料可选P110、T95、N80等级别；

◎ 下入、坐封、回收过程中无需旋转管柱； 

◎ 双内卡瓦锁紧机构，可靠性高；

◎ 胶筒承压能力强；

◎ 内通径大，易于后续施工作业。

SUMP PACKER

Sump packer is used at the bottom of sand-control well, functioning for bearing string and gravel.  Through the setting tool moving the outer cylinder, it shears the setting pins and pushes slips to compress rubber. According to different types of well, it uses cable or drill pipe for tripping in.

FEATURES

◎ Metal material selection: P110,T95,N80; 

◎ No need of rotating string during tripping in, setting, retrieving; 

◎ Dual internal slip locking system, high reliability; 

◎ Strong bearing ability of rubber sleeve; 

◎ Big Internal drift diameter, convenient for following operations.

Note: Other specification products are available.