Shale compaction and sonic logs
CA 2370665 A1 · Owner: Wiltshire, Michael John · Inventors: Wiltshire, Michael John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of calculating a theoretical sonic log from an ideal sonic log and resistivity data. The method involves calculating the ideal sonic log assuming a shale sediment and using available data from a well or the surrounding region. Resistivity data is used to correct the ideal sonic log for departures from the shale sediment assumption. The calculated theoretical sonic log may then be used to calibrate an experimental log and to replace low confidence segments of the experimental log. The method allows useful information to be derived for wells previously considered uneconomical.
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 April 19, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 19, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 19, 2022.
- 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.