Method and apparatus for conveying fluids, particularly useful with respect to oil wells
CA 2338730 A1 · Owner: Goal-Gas & Oil Associates Limited · Inventors: Dveyrin, Dmitry
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus for conveying a fluid flowing through a flow passageway (16) in a tubing (7), by: introducing into the flow passageway (16) flow zones of small cross-sectional area (11) alternating with flow zones of large crosssectional area (12) to produce high-velocity low-pressure zones alternating , with low-velocity high-pressure zones; and providing abrupt transitions from the small cross-sectional area zones (11) to the large cross-sectional area zones (12) to produce a turbulent flow generating swirls and eddies (19) at such transitions. The method and apparatus are particularly useful in oil well applications where the fluid is an oil-gas mixture but could be used in …
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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 July 19, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 19, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 19, 2021.
- 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
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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.