دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a device that fits into the rotary table to accommodate the slips and drive the kelly bushing so that the rotating motion of the rotary table can be transmitted to the kelly. Also called rotary bushing. See kelly bushing, slips.

n: an adoptor that fits into the rotary table and accommodate the slips and drives the killy bushing.

a device that fits into the rotary table to accommodate the slips and drive the kelly bushing.

n: see master bushing.

the drive bushing on the rotary table that turns the kelly.