Crown Block

Published at 03:05PM - 08/01/15

The Crown Block is the piece of block and tackle that is fixed at the top (also known as the Crown) of the drilling Derrick.  

A Crown Block Showing Individual Sheeves

A Crown Block Showing Individual Sheaves 

Using this the Crown Block in tandem with the lower block, known as the Travelling Block and the Drill Line, gives the driller a large mechanical advantage meaning huge weights can be lifted easily.   

As with the Travelling Block, the Crown Block is made up of individual sheaves to allow the Drill Line to be passed through multiple times.





Last updated on 11:21AM - 10/01/15