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Expired Canadian patentCanada

Determination of formation properties from seismic attributes

CA 2213125 C · Owner: Exxon Production Research Company · Inventors: Khare, Vijay; Wahrmund, Leslie A.; Calvert, Craig S.

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Abstract From the Canadian patent

A method of geophysical prospecting using seismic trace attribute analysis for formation characterization. More particularly a method for selection of , seismic traces which most accurately represent the subsurface formation in the area of a seismic survey is disclosed. In one embodiment inflection-point , interval analysis is used to account for effects of local surfaces.

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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 April 10, 1996 and granted September 14, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 10, 2016.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 10, 2018.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 10, 1996
GrantedSeptember 14, 1999
Term endedApril 10, 2016
Patent numberCA 2213125 C
Classification (IPC)G01V1/36 +2 more

Timeline

Timeline From CIPO dates

1997199920012003200520072009201120132015Application filedApril 10, 1996Patent grantedSep 14, 1999Term endedApril 10, 2016

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