Invention Grant
- Patent Title: Collar assembly for breaking tubing hanger connections
- Patent Title (中): 用于破碎管衣架连接的轴环组件
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Application No.: US13353356Application Date: 2012-01-19
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Publication No.: US08967278B2Publication Date: 2015-03-03
- Inventor: Daryl Richard Sugden
- Applicant: Daryl Richard Sugden
- Applicant Address: CA Calgary, Alberta
- Assignee: Nabors Canada
- Current Assignee: Nabors Canada
- Current Assignee Address: CA Calgary, Alberta
- Agency: Haynes and Boone, LLP
- Main IPC: E21B19/16
- IPC: E21B19/16 ; E21B33/04

Abstract:
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.
Public/Granted literature
- US20120181047A1 Collar Assembly for Breaking Tubing Hanger Connections Public/Granted day:2012-07-19
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