Heavy oil recovery process using cyclic co.sub.2- steam stimulation
CA 1231520 A · Owner: Mobil Oil Corporation · Inventors: Shu, Winston R.; Pebdani, Farrokh N.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for the recovery of viscous oil from subterranean formations including tar sands by the injection of a mixture of carbon dioxide and steam into the formation through an injection well, after which formation fluids are recovered from the well in a cyclic manner, using the well alternately for injection and production. Incremental recovery is optimized by maintaining the ratio of carbon dioxide to steam within the range 200 to 300 preferably 230 to 270 SCF carbon dioxide per barrel of steam (with water equivalent) in the injected mixture.
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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 January 19, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 19, 2005.
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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.