Gravel inflated isolation packer
CA 2390443 A1 · Owner: Kernick, Geoffrey · Inventors: Hurst, Gary; Bissonnette, H. Steven; Price-Smith, Colin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention discloses apparatus and methods for use in wellbores that, comprise an inflatable element. The inflatable element is adapted for inflation by gravel. One embodiment of the invention is a method of sealing an annulus in a well that, comprises expanding the inflatable element with a gravel laden slurry. The inflatable, element comprises a passageway communicating between an exterior and an interior of, the inflatable element. The inflatable element is capable of being connected to a sand, screen and the inflatable element can be inflated with the gravel laden slurry during a, gravel packing of the well.
Read the whole patent
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 June 12, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 12, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 12, 2024.
- 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.