System for sealing an annular space in a wellbore
CA 2557797 C · Owner: Swellfix B.V. · Inventors: Cornelissen, Erik Kerst; Bosma, Martin Gerard Rene; Baaijens, Matheus Norbertus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method is provided of applying an annular seal to a tubular element (7) for use in a wellbore (1). The method comprises the steps of: a) providing at least one flexible seal layer (20) at the wellbore site each seal layer , having a pair of opposite longitudinal edges movable relative to each other between an open position wherein the seal layer can be radially applied to the tubular element, and a closed position wherein the seal layer extends substantially around the tubular element the seal layer being made material , susceptible of swelling upon contact with a selected fluid; b) partially lowering the tubular element (7) into the wellbore (1); c) radially applying the seal …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed March 9, 2005 and granted August 28, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 9, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.