Method for measuring fracture porosity in coal seams using geophysical logs
CA 2302995 C · Owner: Rozak, Alexander Thomas · Inventors: Rozak, Alexander Thomas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A novel method for measuring fracture porosity in coal seams is disclosed. Knowledge, of fracture porosity is critical to methane production from coal seams as fractures form, the main permeable pathways for gas migration. The disclosed invention can be used to, determine likely locations where commercially significant amounts of fracturing have, occurred in the coals. These locations pose prime targets for methane exploration, and, the disclosed invention comprises a significant new tool in methane exploration. The, disclosed invention uses existing geophysical well log data a screening , process and, calculations based on the characteristics of the fluid used to drill the hole. …
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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 24, 2000 and granted November 27, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 24, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 24, 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
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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.