دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n pI: 1. on a bit used on a rotary rig, the elements on the end (and sometimes the sides) of the bit that scrapes, gouges, or otherwise removes the formation to make hole. 2. the parts of a reamer that actually contact the wall of the hole and open it to full gauge. A three-point reamer has three cutters;a six-point reamer has six cutters. Cutters are available for different formations.

n: The cogging of cone of cone bit.