FAQs
Why can’t I drill new formation with your mills?
By definition our products are mills, not drill bits. They can be used for formation, but we do not recommend it. The mills can be used anywhere other drag bits or bladed bits are used for formation drilling but this is not the primary purpose they were designed for.
Will the chomp or hurricane mill drill out stainless steel?
Maybe. Stainless steel is the most difficult of all materials to mill out. The chomp and hurricane are likely to do the job but multiple mills will probably be needed.
What’s the difference between a bear claw or chomp mill and a hurricane?
The large circulation ports of the bear claw and chomp mills allow for the removal of large cuttings produced by reverse circulation.
The hurricane mill is “heavier set”, meaning the carbide inserts are closer together and there is more of them. That fact along with the special spiral design will mill up much smaller cuttings thereby reducing the need for large circulation ports.
In summary, the bear claw and chomp mills will produce large cuttings and the hurricane will produce fine cuttings.
Even though the bear claw and chomp are for reverse circulation, can I run them if I’m direct circulating?
Yes! But you will get larger cuttings than if you were to run a hurricane mill with the smaller ports.
What’s the difference between a bear claw and a chomp?
The long, chisel inserts of the bear claw mill bit were specially designed to give a high ROP when milling out cement but the the hardness of metal will produce too much wear and breakage of the inserts.
The rounded, dome shaped inserts of the chomp mill will produce a slower penetration rate but offer more durability when milling out metals, cast iron, and composite plugs.