Cementing Plugs/ Cement Plugs
Top and Bottom Rubber Cementing Plugs
Working Of Cement Plugs
- Rubber Cement Plugs plays a vital role during cementing operations. Plugs minimize the contamination of cement by removing dispersed mud and mud sheath from the casing inner diameter.
- Before the cement slurry and behind the space, a bottom rubber plug is pumped. As the plug moves down the string, it removes the left dispersed mud from the inner diameter of the casing.
- 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.
- 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.
- By this way, after the full volume of cement has been pumped, a top rubber plug is dropped and pumped behind the slurry.
- The top plug then removes the left over cement from the inner diameter of the casing and reaches at the float collar.
- It then rests on the bottom plug to cause a pressure. It also indicates that the cement has been displayed.
- Both the top and bottom plugs are always different. Bottom plugs are red while top plugs are black.