Method for analyzing thinly bedded sand/shale formations
CA 1249331 A · Owner: Shell Canada Limited · Inventors: Hagiwara, Teruhiko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A parallel conductance model of thinly laminated sand/shale sequences utilizes a sand/shale ratio, such as from a borehole televiewer or microelectric scanning tool to derive sand layer, resistivity from otherwise featureless logs of such thinly laminated formations.
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 January 24, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 24, 2006.
- 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.