Page 54 - Air and gas Drilling Field Guide 3rd Edition

3.3 Wellhead Equipment 45

FIGURE 3-9. Rotating internal parts of the rotating head (courtesy of Weatherford International
Ltd).

In order to place the drill string and kelly into the well, the quick-lock clamp
must be unlocked and the three rotating internal sections lifted to the rig floor.
The drill bit with the drill collars are placed in the well through the open rotating
head. The internal sections of the rotating head are fitted over the bottom tool
joint of the drill pipe. The bottom drill pipe joint is lowered into the well and
the internal sections are placed into the rotating head and the quick-lock clamp