In situ recovery process for heavy oil sands
CA 1195606 A · Owner: Texaco Canada Inc. · Inventors: Pachovsky, Roman A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
IN SITU RECOVERY PROCESS FOR HEAVY OIL SANDS (D# 51,500 TexEx-43-F), ABSTRACT OF THE DISCLOSURE Bitumen is recovered from a subterranean formation of heavy oil sands traversed by at least one injection well and at least one associated production well in fluid communication with each injection well. Air in admixture with a heating fluid selected from the group consisting of low quality steam, hot water, or mixtures thereof and an, alkalinity agent are injected into the formation by way of each injection well. The subterranean heavy oil sands are thereby raised to a temperature in the range of about 200 to 350°F. A portion of the bitumen at reduced viscosity is oxidized without burning to …
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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
- Granted October 22, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 22, 2002.
- 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
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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.