Title:
METAL EXPANDABLE ELEMENT BACK-UP RING FOR HIGH PRESSURE/HIGH TEMPERATURE PACKER
Document Type and Number:
WIPO Patent Application WO/2012/118772
Kind Code:
A3
Abstract:
An expandable backup ring includes an outer surface, an inner surface having a plurality of protrusions projecting radially inwardly, and a plurality of segments, the segments defined by a plurality of outer surface cuts. The plurality of outer surface cuts extends radially inwardly from the outer surface and partially into each of the plurality of protrusions.
Inventors:
SHKURTI PIRO (US)
WOLF JOHN C (US)
WOLF JOHN C (US)
Application Number:
PCT/US2012/026836
Publication Date:
February 28, 2013
Filing Date:
February 27, 2012
Export Citation:
Assignee:
SMITH INTERNATIONAL (US)
SHKURTI PIRO (US)
WOLF JOHN C (US)
SHKURTI PIRO (US)
WOLF JOHN C (US)
International Classes:
E21B33/12; E21B17/046
Domestic Patent References:
| WO2009074785A2 | 2009-06-18 |
Foreign References:
| US20070256827A1 | 2007-11-08 | |||
| EP1197632A2 | 2002-04-17 | |||
| US4852394A | 1989-08-01 |
Attorney, Agent or Firm:
WARFFORD, Rodney et al. (IP Administration10001 Richmond Avenu, Houston Texas, US)
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