Well chemical treatment utilizing plunger lift deliver system
CA 2473017 C · Owner: Conocophillips Company · Inventors: Wilson, Dennis Ray
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus and method for delivery of treatment chemicals to the bottom of the wellbore. The delivery system can be a chemical dispenser which can be attached to a plunger used in plunger lift operations a plunger which has been impregnated with treatment chemicals a plunger/dispenser apparatus which has an interface section for interfacing with the inside of the tubing and a dispenser section. Automatic recharging or reapplication of chemicals to the chemical delivery system can be accomplished with a chemical application assembly attached to the plunger manifold.
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 July 6, 2004 and granted April 2, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 6, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 6, 2026.
- 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.