Drilling Rig Systems
Rig Skills
FEBRUARY 18, 2019
How Drilling rig Systems Work-Complete Guide Buy Now Crown Block Crown block is top most part of mast or derrick. Annulus Annulus is space between tubular and open hole or cased hole. It have number of sheaves on it. The sheaves allow passage of drilling lines drawworks to travelling block. Where drilled cutting is removed.
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