Behind the Science - Try to guess what is the most important object in the picture/Indovina qual e' l'oggetto piu' importante

This will be a big challenge for people that are not expert about drilling system like me.

The following one is a picture taken in a specific moment on the rig floor, after we finished the casing (if you don't know what the casing is, see a previous post about).

Try to guess what is the most important object in this picture in this moment of the operation. Difficult , isn't it?!

IMG_2919 (FILEminimizer)

Keep going in following the blog and you will know the answer!