kelly bushing
Also found in: Acronyms.
kelly bushing
[′kel·ē ‚bu̇sh·iŋ] (petroleum engineering)
A device added to the rotary table through which the kelly passes, so that the torque of the table is transmitted to the kelly and the drill.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.