Determining residual oil saturation following flooding
CA 1087516 A · Owner: Union Oil Company Of California · Inventors: Holm, Leroy W.; Ransom, Robert C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for determining the fluid saturation for, example the hydrocarbon saturation the residual oil saturation, or water saturation of a reservoir following a secondary, recovery operation wherein there is injected into the reservoir via a well first hydrocarbons and then a secondary recovery medium to return the portion of the reservoir in the immediate vicinity of the well to the same fluid saturation as exists in the bulk of the reservoir. The reservoir is then logged with a logging instrument to determine the hydrocarbon saturation gas, saturation, residual oil and/or water saturation.
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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 14, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 14, 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.