دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: see rotary locking device. locking mandrels n pi: slickline tools with slips and rubber cups to contain pressure and pack-off tubing in wells not equipped with landing nipples.

n: notches or slots machined into the table part of a rotary table assembly into which a bar on the rotary table assemblys locking device fits to keep the table from turning. See rotary locking device, rotary table assembly.

n: on a rotary table, a steel pin, often spring-loaded, that, when engaged, fits into one of several notches machined onto the perimeter of the rotary assemblys turntable. When engaged, the lock prevents the turntable from turning.