Jet bit | Article about jet bit by The Free Dictionary
jet bit[′jet ¦bit]
A modification of a drag bit or a roller bit that utilizes the hydraulic jet principle to increase drilling rate.
References in periodicals archive
The washover technique employed a 3 1/2-inch OD Jet Bit
on the end of 2 7/8-inch OD drill pipe to drill the pilot hole.
This system will utilize high-pressure jet bits
(10,000 to 15,000 psi) powered by high-pressure downhole motors to drill oil and gas wells 2 to 3 times faster than conventional drills.