Downhole pump assembly and method of recovering well fluids
CA 2468102 A1 · Owner: Stewart, Kenneth Roderick · Inventors: Stewart, Kenneth Roderick; Susman, Hector Fillipus Alexander Van Drentham
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a downhole tool. In particular the present , invention relates to a downhole pump assembly a downhole tool assembly , including a downhole pump assembly a well including a downhole pump assembly and to a method of recovering well fluids. In one embodiment of the invention there is disclosed a downhole tool assembly (10) for location in a borehole (16) of a well (12), the tool assembly (10) including a downhole pump assembly (18). The pump assembly (18) comprises a turbine (26) coupled to a pump (28) for driving the pump (28) to recover well fluid.
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 November 25, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 25, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 25, 2024.
- 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.