breakout block

breakout block

[′brā‚kau̇t ‚bläk]
(petroleum engineering)
A heavy plate fitting in a rotary table that holds a drill bit being unscrewed from a drill collar.
References in periodicals archive ?
Buffer blocks are designed to deal with all of the unplanned and low-value activities--like most e-mail and voice mail--that arise throughout a typical day, while breakout blocks provide free time for you to use to rest and rejuvenate.
Also, it should be stressed how important breakout blocks are.