An alcohol acidizing composition for treating a well to increase production
CA 2479402 C · Owner: Synoil Fluids Inc. · Inventors: Mesher, Shaun T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An alcohol acidizing system for use in acidizing and cleanup in oil wells and gas wells. The system comprises an aqueous acid such as hydrochloric acid, and at least one of an alkyl alcohol such as methanol, ethyl alcohol, iso-propanol or the like or any mixture thereof, an acetylenic alcohol such as methyl butynol methyl pentynol, hexynol, ethyl octynol propargyl alcohol, benzylbutynol, ethynylcyclohexanol or the like, and an acetylenic diol, such as an alkoxylated acetylenic diol. The system may also contain water.
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 September 1, 2004 and granted May 28, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 1, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 1, 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.