SHANDONG SAIGAO GROUP CORPORATION
SHANDONG SAIGAO GROUP CORPORATION

Stage Cementing Collar Accessories

The accessories of MSC-A/HSC-A Stage Cementer include a first-stage plug, free-fall opening plug, closing plug, shut-off baffle and pumping-down opening plug. Being made of rubber or aluminum, these parts are easily drillable.



Features of Stage Cementing Collar Accessories

1. The shut-off baffle is installed in the casing coupling, one joint above the float collar, used for pumping pressure of first-stage plug.

2. The first-stage plug is used to isolate the first-stage cement and drilling fluid. On the end of displacement, the first-stage plug lands and effects a seal against the shut-off baffle.

3. Featuring streamline shape and filled with lead, the free-fall opening plug can quickly free-fall to the lower sliding sleeve. When pressure is applied to the casing, it can open the circulation ports.

4. The closing plug is used to isolate the sec on d-stage cement and drilling fluid. When run ning to the upper sliding sleeve, it effect a seat in the stage cementer. Pressure is applied to the casing and the circulation ports are closed.

5. The pump-down opening plug is used fore on tenuous cementing operation and in deviated wells. It can open the circulation ports directly 日nd quickly, while the free-fall opening plug needs longer time waiting for falling.


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