Method for determining real-time downhole mud properties while drilling
CA 2392969 A1 · Owner: Schlumberger Canada Limited · Inventors: Cooper, Iain
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method is disclosed for determining the downhole rheological properties of a wellbore fluid. The method includes moving the wellbore fluid through a wellbore tool, assembly into a wellbore at a first flow rate. A pressure is measured at a first position, proximate a bottom of the wellbore. A pressure is measured at a second position in the, wellbore axially separated from the first position. The wellbore fluid is then moved, through the wellbore tool assembly at a second flow rate. Measuring pressure at the first, and second positions is repeated and at least one rheological property is determined from, the pressure measurements.
Read the whole patent
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 July 10, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 10, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 10, 2024.
- 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.