Well collar identification method
CA 2201215 C · Owner: Grande, Rene Shoan · Inventors: Grande, Rene Shoan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A well collar counting methodology is provided comprising first obtaining acoustic pulse data from a well and then digitizing and storing the amplitude-versus-time signal for subsequent processing. The raw signal is processed by applying a Wavelet Transform thereto for producing multiple resolutions of the signal preferably four, at least, one of which has a transformed signal resolution sufficient to distinguish reflections emanating from collars, and one of the coarser resolutions having a transformed signal resolution sufficient to distinguish reflections emanating from the fluid surface as kicks. The fluid surface kick and repeat kicks are determined by performing multi-resolutional …
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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 March 27, 1997 and granted February 20, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 27, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 27, 2019.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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.