دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a spool on the side of the drawworks cathead that reels in a soft line, called the catline;used for hoisting light equipment on the rig floor.

n: on a spinning chain, a piece of fiber rope (soft line) that is attached to the end of the chain that is wrapped around the tool joint. When the makeup cathead pulls the chain off the drill pipe, a rotary helper uses the guideline to control the chains movement.

n: a fibre rope.