Well-treating process and aqueous solution for use in said process
CA 1103009 A · Owner: Shell Canada Limited · Inventors: Templeton, Charles C.; Richardson, Edwin A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for stimulating a hydrocarbon containing underground formation comprising siliceous material, by treating the formation with an aqueous solution in which a mud acid is generated from a fluoride salt and a relatively slowlyreactive acid-yielding material formed by chlorocarboxylate material from which chlorine is relatively easily hydrolyzable.
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
- Granted June 16, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 16, 1998.
- 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.