kxC-A型机械式双级注水泥器为内关闭式结构，通过投重力塞或顶替型打开塞使循环孔打开，关闭塞带动关闭套下行关闭循环孔。

 

The kxC-A Mechanical Stage Cementer features inner-closing configuration, in which the circulation ports are opened with free-fall or pumping-down plug. The closing plug drives the closing sleeve to shut the circulation ports.

 

特 点

 

    1、采用内关闭式结构，关闭后可实行永久自锁。

    2、打开、关闭动作时，均不存在小腔液体压缩问题。

    3、上下接头内径与套管内径一致，但小于关闭套内径，起下钻及钻除作业时可有效保护关闭套，使其免受损伤。

    4、全部配件均由可钻性好的橡胶/铝质材料制成。且具有防转机构，方便钻去。

    5、配有顶替型打开塞，可用于连续式注水泥作业。

1. With inner-closing structure, the MSC-A Stage Cementer can bring permanent self-locking after closing.

2. The pressure-relief design prevents fluid trapping and compression between the opening device and the closing plug during the closing phase of the tool’s operation.

3. The I.D. of upper/lower sub is the same with that of casing, but smaller than that of closing sleeve, which can minimize chances of damages to the closing sleeve.

4. The inner seats are made of an easily drillable nitrile rubber/aluminum material. Both the opening and closing seats lock against rotation for easy drillout.

5. With pumping-down plug ,it is used in the operation of continuous cementing.

 

技 术 参 数 Technical Parameters