Method for determining fluid influx or loss in drilling from floating rigs
CA 2060736 C · Owner: Jardine, Stuart Inglis · Inventors: Jardine, Stuart Inglis; Mccann, Dominic Patrick Joseph
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of determining fluid influx or loss from a well being drilled from a floating vessel and using a drilling fluid the method comprising monitoring , the flow of fluid from the well to obtain a varying signal indicative of the variation in flow from the, well, monitoring the heave motion of the vessel to obtain a varying signal indicative of, said motion, using the signal indicative of the heave motion to calculate the expected, variation in fluid flow from the well due to said motion using said , calculated flow to, correct the varying flow signal to compensate for any flow component due to heave, motion and monitoring the compensated signal for an indication of fluid influx or …
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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 February 6, 1992 and granted August 6, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 6, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 6, 2014.
- 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
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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.