System(s) for monitoring the qualitative variation in drilled cutting delivery to the surface during the drilling of a subterranean well
CA 2050388 A1 · Owner: Ducatel, Alain · Inventors: Pomerleau, Daniel Guy; Ducatel, Alain
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention seeks to provide a method for continuously determining the variation in detritus in a drilling fluid discharged during a well drilling operation; by passing the drilling fluid discharged from the borehole through a shale shaker to remove the detritus and returning the drilling fluid from which the detritus has been removed by the shale shaker to the well drilling operation. The detritus is passed via a conveyor device over a weighing device connected to at least one load cell whereby variations in weight of the, conveyed detritus cause variations in stress on the at least one load cell; and continuously monitoring the variation in electrical output produced by the load …
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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
- Filed August 30, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 30, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 30, 2013.
- 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.