Behind casing water volume flow rate measurement using concentric gamma ray detectors
CA 1059650 A · Owner: Texaco Development Corporation · Inventors: Arnold, Dan M.; Paap, Hans J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
BEHIND CASING WATER VOLUME FLOW RATE, MEASUREMENT USING CONCENTRIC GAMMA RAY DETECTORS (D#74,517-1-F), ABSTRACT OF THE DISCLOSURE Measurement of the distance from a gamma ray detector to a gamma ray source for location of a channel of undeisred behind casing water flow in a producing well is provided. Coaxially aligned dual cylindrical gamma ray detector crystals are used at one or more longitudinally spaced locations in the borehole to detect the characteristic gamma rays from the decay of radioactive nitrogen 16 produced by the activation of elemental oxygen nuclei comprising the molecular structure of undesired water flow. The ratio of counts at the outer coaxial detector to those at the …
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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 July 31, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 31, 1996.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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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.