How does cement head work in oilfield drilling?

How Does Cement HeadWork In Oilfield Drilling?

In oilfiled drilling,Cement is used for many things, but the most important application is cementing casing in place.

A casing string is run in the hole to arranged depth, usually near the current total depth of the well. On the bottom of the casing string is a float collar and float shoe to aid in getting the cement properly in place with no back flow: float collar.

When the desired volume is mixed to specifications from bulk dry cement and pumped through a cementing head, down the casing, taking returns on the annulus.

Once the design volume is pumped, a rubber wiper plug is released. Its job is to clean the inside of the casing. When it finds its profile in the float collar, pumping is complete. All that is left is to hold pressure until the desired compressive strength is reached, and rig down.

Cementing Head is designed to hold a cementing plug before it is pumped down the casing during the cementing operation.

In most operations, a bottom plug is launched before the spacer or cement slurry. The top plug is released from the cement Head after the spacer fluid. A manifold incorporated into the cement head assembly allows connection of a fluid circulation line.