Method for determining thermal neutron capture cross-section of earth formations using measurements from multiple capture gamma ray detectors
CA 2276822 C · Owner: Western Atlas International, Inc. · Inventors: Mickael, Medhat W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for determining thermal neutron capture cross-section of an earth formation, penetrated by a wellbore from counts of capture gamma rays detected at spaced apart, locations from a source irradiating the formations with bursts of high energy neutrons. An, apparent capture cross-section is determined from counts detected at one of the spaced apart, locations. The apparent capture cross-section is adjusted by a correction factor calculated, from counts detected at each of the spaced apart locations. The correction factor is, calculated from an empirical relationship of known values of formation capture cross-section, wellbore diameter and wellbore capture cross section with …
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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 July 6, 1999 and granted November 18, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 6, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 6, 2021.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.