Pipes and tubular conduits – With closures and plugs
Reexamination Certificate
2007-11-20
2007-11-20
Brinson, Patrick F. (Department: 3754)
Pipes and tubular conduits
With closures and plugs
C138S093000, C138S097000, C166S285000
Reexamination Certificate
active
11423097
ABSTRACT:
A method of performing a servicing operation within a pipeline comprises positioning a swellable component about at a desired location within a pipeline, exposing the swellable component to a swelling agent within the pipeline, expanding the swellable component into sealing engagement with the pipeline, thereby forming a seal across the pipeline, and opening a fluid pathway through the pipeline without removing the swellable component. Another method of performing a servicing operation within a pipeline comprises inserting into the pipeline a pipeline tool comprising an externally mounted swellable component, propelling the pipeline tool through the pipeline to about a desired location via a flow of fluid, expanding the swellable component into sealing engagement with the pipeline at about the desired location, and opening a flow path through the pipeline tool.
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“PSI SmartPlug(TM) Onshore” brochure obtained from http://www.plugging.com/rogaland/stavanger/plugging.nsf/id/C743E43815481F02C1257021003E8EC2?Ope..., Jun. 8, 2006, 7 pgs.
Patent application entitled “Apparatus for Sealing and Isolating Pipelines,” by Rune Freyer, et al., filed Jun. 8, 2006, as U.S. Appl. No. 11/423,095.
Abney Laurence
Arrington Steve
Freyer Rune
Brinson Patrick F.
Conley & Rose, P.C.
Halliburton Energy Service,s Inc.
Wustenberg John W.
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