Enhanced oil recovery for oil reservoir underlain by water
CA 2028531 A1 · Owner: Mobil Oil Corporation · Inventors: Pebdani, Farrokh N.; 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 recovering viscous oil from a subterranean viscous oil-containing formation underlain by a water zone. Steam is injected into the formation via the injection well at the oil/water contact and oil is recovered from the formation until steam breakthrough occurs at the production well thereby forming a hot plate at the oil/water contact. Thereafter the, production well is shut-in and a combustion-supporting gas preferably pure oxygen, is injected into the formation at the oil/water contact causing an in-situ combustion reaction to occu at the oil/water contact and pressurization of the formation. Injection of the combustion-supporting gas is continued until th formation is …
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 October 25, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 25, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 25, 2012.
- 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.