Electric logging method
CA 1298872 C · Owner: Falk, David O. · Inventors: Falk, David O.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Docket 870035 000, Abstract of the Disclosure A method of conducting an electric resistivity logging operation, A readily flowable liquid composition containing a breaker is formed from water of different resistivity than that of the formation water. Fluids in the well bore are displaced by the liquid composition and the composition is allowed to gel. The gel may be highly viscous, which prevents ingress of formation fluids but permits logging equipment to be moved therethrough or, the gel may be removed and replaced with fresh water prior to the logging operation. In the latter case gel would remain in the formation adjoining the well bore to prevent ingress of formation fluids. After …
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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 April 14, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 14, 2009.
- 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.