دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: 1. an abrupt change in direction in the wellbore, frequently resulting in the formation of a keyseat. 2. a sharp bend permanently put in an object such as a pipe, wire rope. or a wire rope sling.

n: The elbow caused by a sharp change of direction in the wellbore.