jet bit
jet bit
[′jet ¦bit] (design engineering)
A modification of a drag bit or a roller bit that utilizes the hydraulic jet principle to increase drilling rate.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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.
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