Title:
CENTRALIZER
Document Type and Number:
WIPO Patent Application WO/2015/017568
Kind Code:
A3
Abstract:
A centralizer having bow springs in a retracted position to facilitate passage through a restriction. After passing through the restriction, the bow springs may be expanded to support a casing. In one embodiment, the bow springs may be expanded using a movable sleeve.
Inventors:
MORRISON JEFFERY (US)
LIRETTE BRENT J (US)
LOGUIDICE MICHAEL (US)
SMITH PAUL L (US)
LIRETTE BRENT J (US)
LOGUIDICE MICHAEL (US)
SMITH PAUL L (US)
Application Number:
PCT/US2014/048940
Publication Date:
May 21, 2015
Filing Date:
July 30, 2014
Export Citation:
Assignee:
WEATHERFORD LAMB (US)
International Classes:
E21B17/10
Foreign References:
| US2841226A | 1958-07-01 | |||
| US5261488A | 1993-11-16 | |||
| US20070235199A1 | 2007-10-11 | |||
| US20120186828A1 | 2012-07-26 | |||
| US20020139537A1 | 2002-10-03 |
Attorney, Agent or Firm:
PATTERSON, William, B. et al. (LLP24 Greenway Plaza, Suite 160, Houston Texas, US)
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