There are Stage Cementer, Cement Plug Set, Hydraulic Liner Hanger, Setting Tool, Landing Collar, Float Collar, Float Shoe, Setting-ball Carrier Assembly.

1. Stage cementer
The SJ type stage cementer features inner-closing configuration, in which the circulation ports are opened with free-fall or pumping-down opening. The closing plug drives the closing sleeve to the circulation ports. It has following Features:

• With inner-closing structure, the SJ type stage cementer can bring permanent self-locking after closing.　

• The pressure-relief design prevents fluid tripping and compression between the opening device and the closing plug during the closing phase of the tool 's operation.

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

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

• With pumping-down opening plug, it is used in the operation of continuous cementing

2. Cement Plug Set
A special tool for pumping slurry and releasing plug.

• Quick-latch adapter is designed to offer easier, faster and safer makeup for　cementing casing.
• Positive lever indicates plug releasing .

• Balance pipe is developed.

• The landing collar can be used with any kinds of hydraulic liner hangers.
• Combination of plug with latch provides efficient seal which can check back pressure.
• The material of inner sleeves allow easy drillout.

• It can firmly catch the ball and ensure the liner to be set successfully even in high-deviated or horizontal wells.
• Components in setting-ball carrier are drillable .
• With the reliable sealing , its sealing capacity is 25 Mpa,.