HOW TO OPERATE CEMENT HEAD?
What is a Cement Head?
Cement head is a device installed at the top of the casing when cementing cement.It is a special tool for pumping slurry and releasing plug. It makes the drilling fluid fill into casing in turn and quickly.
How to use Cement Head?The method as below:
In the joint operation of multiple cement trucks, the rubber plugs for cement injection are pre-placed in the cement head, with upper and lower plugs.
Before filling the cement slurry, put the plug into the lower plug for a predetermined amount of cement slurry, then put it on the plug, then replace it with mud or water to make the plug down.
When the lower plug is blocked by the support ring, the partition in the center hole is smashed until the cement slurry is completely squeezed out of the casing. When the upper and lower plugs collide, the passage of the liquid is blocked, the pump pressure suddenly increases, and the cementing operation End.
After the cementing is completed, the cement head is closed to the outside gate, and the connecting pipeline is removed.
Waiting for 12 hours, and then testing the return height through the logging, and testing the pressure for 48 hours after the condensation, check the cementing quality.