Expandable wellbore junction
CA 2443312 A1 · Owner: Bowling, John S. · Inventors: Longbottom, Jim R.; Gano, John C.; Freeman, Tommie A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Methods and apparatus are provided for use in conjunction with subterranean well operations. In a described embodiment an expandable, wellbore connector is utilized in interconnecting multiple wellbores in the well. The wellbore connector is expanded into a cavity formed in one wellbore and, then another wellbore is drilled through the wellbore connector. The wellbore connector is sealingly engaged with tubular members in each wellbore.
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 May 25, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 25, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 25, 2021.
- 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.