Invention Grant
- Patent Title: Anti-extrusion backup system, packing element system having backup system, and method
- Patent Title (中): 防挤压备份系统，备件系统包装系统及方法
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Application No.: US12956781Application Date: 2010-11-30
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Publication No.: US08479809B2Publication Date: 2013-07-09
- Inventor: Graham E. Farquhar
- Applicant: Graham E. Farquhar
- Applicant Address: US TX Houston
- Assignee: Baker Hughes Incorporated
- Current Assignee: Baker Hughes Incorporated
- Current Assignee Address: US TX Houston
- Agency: Cantor Colburn LLP
- Main IPC: E21B33/12
- IPC: E21B33/12 ; E21B33/03 ; E21B33/128
Abstract:
An antiextrusion backup system includes an inner expandable backup ring having a first set of slots. An outer expandable backup ring having a second set of slots wherein the outer expandable back up ring is rotationally locked to the inner expandable backup ring to prevent an extrusion gap in an expanded condition of the backup rings. A method for operating within a tubular is also included.
Public/Granted literature
- US20120133098A1 ANTI-EXTRUSION BACKUP SYSTEM, PACKING ELEMENT SYSTEM HAVING BACKUP SYSTEM, AND METHOD Public/Granted day:2012-05-31
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