Increasing the flow of fluids through a permeable formation
CA 1237656 A · Owner: Union Oil Company Of California · Inventors: Watkins, David R.; Kalfayan, Leonard J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Method for treating a formation particularly, one containing finely divided particulate material to, increase the flow of fluids through the formation wherein there is injected therein an organosilicon compound preferably in a hydrocarbon carrier liquid followed by, injection of steam containing a compound which contains ammoniacal nitrogen, selected from the group consisting of ammonium hydroxide, ammonium salts of inorganic acids ammonium salts of carboxylic acids, quaternary ammonium halides, amine or substituted amine hydrochlorides derivatives of ammonium cyanate, and water-soluble ammonia or ammonium ion precursors selected from the group consisting of amides of carbamic acid and …
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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 June 7, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 7, 2005.
- 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.