Lateral wellbore connection
CA 2260616 A1 · Owner: Chatterji, Jiten · Inventors: Onan, Patty L.; Gano, John C.; Onan, David D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus and methods are provided for achieving a lateral wellbore connection in a subterranean well. In one described embodiment a first, wellbore is drilled intersecting a formation and then a second wellbore is drilled through a sidewall of a tubular string positioned in the first wellbore. Either prior to or subsequent to the second wellbore being drilled a , stabilizing, material is positioned in an annulus between the tubular string and the first wellbore. The stabilizing material may also be forced into the formation to thereby enhance the properties of the formation.
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 February 3, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 3, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 3, 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.