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Expired Canadian patentCanada

Method and system for reservoir characterization in connection with drilling operations

CA 2506991 C · Owner: Halliburton Energy Services, Inc. · Inventors: Godfrey, Craig; Shayegi, Sara; Elrod, Louis W.

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Abstract From the Canadian patent

A method for analyzing reservoir fluids in connection with a drilling operation includes determining composition and isotopes of injection fluids injected into a wellbore during a drilling operation and production fluids recovered from the wellbore during the drilling operation. Reservoir fluids from a reservoir intersected by the wellbore are characterized based on the composition and isotopes of the injection fluid and of the production fluid.

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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 May 10, 2005 and granted June 25, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 10, 2025.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 10, 2005
GrantedJune 25, 2013
Term endedMay 10, 2025
Patent numberCA 2506991 C
Classification (IPC)G01V9/00 +1 more

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedMay 10, 2005Patent grantedJune 25, 2013Term endedMay 10, 2025

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.