Method for determining residual oil saturation of a gas-saturated reservoir
CA 1320007 C · Owner: Esso Resources Canada Limited · 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
Abstract, A method for determining in situ residual oil saturation of a gas-saturated reservoir by injecting at least two non-reactive tracers into an injector well and analyzing the samples from a production well. The tracers have different partition coefficients and are chromatographically retarded to different extents during their passage through the formation.
Read the whole patent
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 July 6, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 6, 2010.
- 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
Timeline From CIPO dates
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.