Method of reducing the amount of formation water in oil recovered from an oil well
CA 2113976 C · Owner: Centre For Frontier Engineering Research · Inventors: Peachey, Bruce Richard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for reducing the amount of formation water in oil recovered from an oil well. Firstly place a cyclone, separator downhole in a producing oil well. The cyclone separator includes a separation chamber wherein liquids of differing densities are separated, a mixed liquids inlet through which liquids pass into the separation chamber a first, outlet for liquids of a first density to pass from the separation chamber, and a second outlet for liquids of a second density to pass from the separation chamber. Secondly connect, the first outlet to a recovery conduit extending to surface whereby a stream of mainly oil is separated in the separation chamber from the oil/water stream flowing …
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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
- Filed January 21, 1994 and granted April 7, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 21, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 21, 2016.
- 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.