Oilfield in-situ upgrading process
CA 2255071 C · Owner: Archon Technologies Ltd. · Inventors: Ayasse, Conrad; Greaves, Malcolm; Turta, Alex
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A well configuration is provided comprising an injection well completed relatively high in an oil reservoir and a production well completed relatively low in the reservoir. The production well has a horizontal leg oriented generally perpendicularly to a generally linear and laterally extending upright combustion front propagated from the injection well. The leg is positioned in the path of the advancing front. Oil upgrading catalyst has been emplaced along the horizontal leg. The production well is maintained open thereby providing a low pressure sink which induces the front to advance along the leg. The hot combustion gases react with the commingled oil over the catalyst to provide in situ …
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 December 4, 1998 and granted July 8, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 4, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 4, 2020.
- 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.