Method of measuring horizontal fluid flow in cased off subsurface formations with manganese compensation
CA 1106079 A · Owner: Texaco Development Corporation · Inventors: Paap, Hans J.; Scott, Hubert D.; Arnold, Dan M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
METHOD OF MEASURING HORIZONTAL FLUID, FLOW IN CASED OFF SUBSURFACE FORMATIONS WITH MANGANESE COMPENSATION, (D#76,046), ABSTRACT OF THE DISCLOSURE Fluid in permeable earth formations adjacent well casing is irradiated with neutrons to form radioactive tracer isotopes in the chemical elements comprising the fluid, typically sodium 24 in saline subsurface formation water, which decays by emission of gamma rays. By measuring the rate of decay of the radioactive isotope a measure of, horizontal fluid flow in the formation is obtained. Manganese, present in the steel well casing has been found to, also respond to the neutron irradiation by forming the isotope manganese 56 which emits gamma rays …
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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 28, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 28, 1998.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.