Use of tracers to monitor in situ miscibility of solvent in oil reservoirs during eor
CA 1310140 C · Owner: Harker, Bradford C. · Inventors: Harker, Bradford C.; Tang, Joseph S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for monitoring in situ miscibility of a solvent with reservoir oil by using at least two tracers having different boiling points and being miscible with the solvent. The tracers are mixed with the solvent injected into a well and produced from another well. Appropriate analysis of the produced tracers will reveal whether the solvent is first contact miscible. The tracers are selected from the group consisting of halocarbons, halo-hydrocarbons, sulfur hexafluoride tritiated or carbon 14 tagged hydrocarbons tritium gas, and radioactive isotopes of inert gases. 22658/17/1-1-1/31
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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
- Granted November 10, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 10, 2009.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.