Low-temperature oxidation method for the recovery of heavy oils and bitumen
CA 1090113 A · Owner: Texaco Canada Inc. · Inventors: Redford, David A.; Cram, Phillip J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved method for the recovery of heavy oils and bitumen from subterranean formations by the injection thereinto of a mixture of an oxyqen-containing gas and steam in which the ratio of free oxygen in the gas to steam is in the range of 0.03 to 0.13 MSCF/bbl. -I-
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
- Granted November 25, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 25, 1997.
- 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.