System and method for drilling using a modulated jet stream
CA 2532167 C · Owner: Shell Canada Limited · Inventors: Blange, Jan-Jette
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
System and method for making a hole (1) in an object the system comprising , jet means for generating an abrasive jet (10) formed of a mixture of a fluid and abrasive particles, and for blasting the abrasive jet with an erosive power into impingement with the object in an impingement area thereby eroding , the object in the impingement area. The system further comprises rotating means for moving the impingement area along a selected circular trajectory in the hole (1) about its circumference, and modulation means for modulating the erosive power of the abrasive jet (10) while the impingement area is being moved along the selected trajectory.
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 9, 2004 and granted May 1, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 9, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 9, 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.