Sampling tool for obtaining samples of fluids present in a well
CA 2071953 A1 · Owner: Norsk Hydro A.S. · Inventors: BõE, EINAR
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A sampling tool for immersing into a well for collection of samples of oil, gas or water during drilling for production of said fluids. The sampling tool (1) comprises a tubular hollow and, preferably cylindrical member with two chambers (12 14) separated by , a compressible pipe (9). Said sampling tool comprises an outer pipe (2) formed as a cylindrical member to withstand the reservoir pressure. Inside the outer pipe (2) is positioned a unit (13) forming a gas tight storage chamber (12) for the gas-/liquid samples and a chamber (14) for a counter pressure medium. The chamber (14) is formed by pressing the pipe (9) against the inside of a U-profile (10). During sampling, the volume of …
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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 December 14, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 14, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 14, 2012.
- 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.