دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a special sub that contains a key or slot,which must be aligned with the scribe line of the bent sub.a surveying instrument can then be run into the sub, aligning itself with the key to give the orientation of the scribe line, which defines nthe toolface.

n: a reference line cut on the inside bend of a bent sub to indicate the toolface.

n: the part of a deflection toolusually marked with a scribe line-that is oriented in a particular direction to make a predetermined deflection of the wellbore.

n: The perpendicular plane along the direction of application of kickover tool.