Method for monitoring potassium chloride concentration in drilling fluid
CA 1212604 A · Owner: Mobil Oil Corporation · Inventors: Dion, Eric P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Invention The potassium chloride concentration of a drilling fluid is monitored during well drilling operations to identify any depletion in such concentration with time. Initially the gamma, radiation measuring apparatus utilized is calibrated by making gamma radiation measurements on drilling fluid samples having successively increasing potassium chloride concentrations. A calibration constant is derived from the measured relationship between the potassium chloride concentrations of the various drilling fluid samples and their respective gamma radiation count rates. This calibration constant is then used along with the measured gamma radiation count rates from drilling …
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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 October 14, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 14, 2003.
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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.