ball-up
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ball-up
[′bȯl ‚əp] (engineering)
During a drilling operation, collection by a portion of the drilling equipment of a mass of viscous consolidated material.
Failure of an anchor to hold on a soft bottom, by pulling out with a large ball of mud attached.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.