Title:
RETRIEVABLE SWELLABLE PACKER
Document Type and Number:
WIPO Patent Application WO/2012/071217
Kind Code:
A3
Abstract:
A well tool can include a swellable material, and a degradable material which supports the swellable material, but which degrades in response to contact with a selected fluid in a well. A packer for use in a subterranean well can include a swellable material, and a degradable material which supports the swellable material. A method of unsetting a packer in a subterranean well can include the steps of, after the packer has been set in the well, exposing a degradable material of the packer to a selected fluid, thereby degrading the degradable material, and a seal element of the packer being unsupported by the degradable material in response to the exposing step.
Inventors:
SEVRE ALF K (US)
Application Number:
PCT/US2011/060787
Publication Date:
August 16, 2012
Filing Date:
November 15, 2011
Export Citation:
Assignee:
HALLIBURTON ENERGY SERV INC (US)
SEVRE ALF K (US)
SEVRE ALF K (US)
International Classes:
E21B33/127; E21B33/12
Foreign References:
| US20080149351A1 | 2008-06-26 | |||
| US20100089565A1 | 2010-04-15 | |||
| US20090084539A1 | 2009-04-02 | |||
| US20060219407A1 | 2006-10-05 |
Other References:
See also references of EP 2643546A4
Attorney, Agent or Firm:
SMITH, Marlin, R. (P.C.P.O. Box 99, Rockwall TX, US)
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