دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a special device that fits into a bit breaker adapter (a plate that goes into the rotary table) and conforms to the shape of the bit. Rig workers place the bit to be made up or broken out of the drill stem into the bit breaker and lock the rotary table to hold the bit breaker and bit stationary so that they can tighten or loosen the bit.

a heavy plate that can hold the bit in the rotary table to make or break it from the drill string.

n: a heavy plate that fits into the rotary table and holds the bit breaker;a device used to hold the bit while it is being made up or broken out of the drill stem.

n: a surface wave that has become too steep to be stable.

a chemical added to a gel that breaks down the gellant structure.

n: see bit breaker adapter.

n: contacts that interrupt the current in the primary circuit of the ignition system in a spark-ignition engine.

n: The two symmetric troughs manufactured in blank bits. Be convenient for clicking and breaking when desorption of drill bit.

n: a heavy plate that fits in the rotary table and holds the drill bit while it is being unscrewed from the drill collar. See bit breaker.

n: See bit breaker.