Wells – Processes – Placing or shifting well part
Reexamination Certificate
2006-06-06
2010-02-16
Bates, Zakiya W. (Department: 3676)
Wells
Processes
Placing or shifting well part
C166S120000, C166S135000, C166S192000, C166S195000, C166S212000, C166S300000, C166S376000
Reexamination Certificate
active
07661481
ABSTRACT:
An apparatus is provided for use as a downhole tool or a component thereof for insertion into a wellbore. According to one aspect, the apparatus has a body having a chamber, wherein at least a portion of the body is radially expandable; and a water-swellable material in the chamber, wherein the water-swellable material is dissolvable in water. According to another aspect, the apparatus has a body having a chamber, wherein at least a portion of the body is radially expandable, and wherein at least a portion of the body is made with a material that is deteriorable by hydrolysis; and a water-swellable material in the chamber. According to a further aspect, the water-swellable material is dissolvable in water. A process of temporarily blocking or sealing a wellbore is also provided, including moving an apparatus according to the invention through a wellbore to a selected position in the wellbore; exposing the water-swellable material to water or an aqueous fluid to expand the apparatus into engagement with the wellbore; performing a well completion, servicing, or workover operation in which the apparatus is contacted with fluids; and thereafter, allowing the deteriorable material to deteriorate and/or allowing the water-swellable material to dissolve.
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Munoz, Jr. Trinidad
Todd Bradley L.
Bates Zakiya W.
Booth Albanesi & Schroeder LLC
Halliburton Energy Service,s Inc.
Wustenberg John W.
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