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 ?
That's too deep for a single router pass, so I made three passes, removing and replacing the breakout block after each pass.
Again, use a breakout block to prevent splintering.
Breakout blocks provide free time for you to use to rest and rejuvenate.
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.