Behind casing water flow detection using pulsed neutron oxygen activation
CA 1058331 A · Owner: Texaco Development Corporation · Inventors: Paap, Hans J.; Peelman, Harold E.; Arnold, Dan M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
BEHIND CASING WATER FLOW DETECTION, USING PULSED NEUTRON OXYGEN ACTIVATION (D#74,199-2F), ABSTRACT OF THE DISCLOSURE Measurement of the linear flow velocity and volume flow rate of undesired behind casing water flow is provided. A well tool having a 14 MEV pulsed neutron source is used to irradiate the earth formations behind well casing with bursts of high energy neutrons. This irradiation activates elemental oxygen nuclei comprising the molecular structure of the undesired flow. Dual spaced gamma ray detectors located above or below the neutron source detect the decay of unstable isotope nitrogen 16 produced by the oxygen activation in the time intervals between the neutron bursts. …
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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 10, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 10, 1996.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.