Collar assembly for breaking tubing hanger connections

摘要

An apparatus includes a first housing portion comprising a first adjustable gripping system moveable between an engaged position that grips a cylindrical outer surface of a first tubular structure having a first diameter and a disengaged position that permits relative movement of the first housing portion and the first tubular structure. The apparatus also includes a second housing portion fixed relative to the first housing portion so that rotation of the first housing portion results in rotation of the second housing portion. The second housing portion includes a second gripping system to securely grip a cylindrical outer surface of a second tubular structure that is threadably attached to the first tubular structure and has a second diameter different than the first diameter. Methods of breaking tubing hanger connections are also disclosed.

主权项

1. An apparatus, comprising:
a first housing portion comprising a first gripping system moveable between an engaged position and a disengaged position, wherein:
in the engaged position, the first gripping system grips a cylindrical outer surface of a first tubular structure having a first diameter; andin the disengaged position, relative movement between the first housing portion and the first tubular structure occurs; and a second housing portion rotationally fixed relative to the first housing portion in a manner that prevents relative rotation between the first and second housing portions, the second housing portion comprising a second gripping system fixed relative to the first gripping system in a manner that prevents relative rotation between the first and second gripping systems, the second gripping system being structurally arranged to securely grip a cylindrical outer surface of a second tubular structure that is threadably attached to the first tubular structure, wherein the cylindrical outer surface of the second tubular structure has a second diameter different than the first diameter.