دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the loose bending sub with fossa cubitales and axial ring ,connected by pins and used to fish the tools whose top close the hole wall

Knuckle Joint.

n: a deflection tool, placed above the drill bit in the drill stem. with a ball and socket arrangement that allows the tool to be deflected at an angle;used in directional drilling. It is useful in fishing operations because it allows the fishing tool to be deflected to the side of the hole, where a fish may have come to rest.

n: deflecting tool, it is also used in the fishing .

a flex joint in a tool string that allows alignment with a target not in the same plane.