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The Working Process of Cementing Plugs

2017-02-17 18:26:52

Cement plugs are engineered for greater reliability. Our design of top and bottom plugs provides a seal against the casing wall to prevent mixing of cement slurry and displacement fluid. The top rubber plug and bottom rubber cementing plug have the same basic design with firm wiping action provided by five wiping surfaces.

Working of Cement Plugs:

•    Rubber cementing plugs helps during cementing operations as it minimizes the contamination of cement by removing dispersed mud and mud sheath from the casing inner diameter.
•    A diaphragm on the plug gets ruptured due to the pressure exerts when the bottom plug seats are at the float collar. This helps cement to flow through it.
•    Before the cement slurry, a bottom rubber plug is pumped behind the space. As the plug moves down the string, it removes the left dispersed mud from the inner diameter of the casing.
•    By this way, after the full volume of cement has been pumped, a top rubber plug is dropped and pumped behind the slurry.
•    It twists the corner of the hole or toe end, located at the bottom of the horizontal well. The annular space between the casing and the formation is then filled.
•    The top plug then removes the left over cement from the inner diameter of the casing and reaches at the float collar.
•    Both the top and bottom plugs are always different. Bottom plugs are red while top plugs are black.
•    It then rests on the bottom plug to cause a pressure. It also indicates that the cement has been displayed.


Cement plugs


Cementing plugs are designed to replace conventional cementing plug system, it is manufactured using superior quality materials. The high tensile strength and possesses a greater compressive strength can withstand a bottom hole temperatures of upto 250° F for an extended period of time.



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