Treatment of a well with an encapsulated liquid and process for encapsulating a liquid
CA 2417601 A1 · Owner: Halliburton Energy Services, Inc. · Inventors: Cassidy, Juanita M.; Blauch, Matthew E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a method for encapsulating a liquid within a semi-, permeable membrane. In particular the present invention provides a method for encapsulating free flowing liquids. The current invention also provides a method for treating, the downhole region of a well using encapsulated well treatment chemicals. The method of, treating the downhole region of a well is particularly useful in acid etching a fracture face.
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 January 29, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 29, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 29, 2025.
- 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.