Method and apparatus for displacing logging tools in deviated wells
CA 1256017 A · Owner: Schlumberger Canada Limited · Inventors: Nottier, Alain P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Method for displacing a logging tool through a non-gravity descent portion of a well such as a highly deviated portion comprising the steps of providing a logging tool at the lower end of a drill pipe as an exposed extension to said drill pipe displacing the tool thus exposed through said portion of the well by connecting additional sections of drill pipe and lowering the drill pipe, and, during this displacing step continuously generating and sending uphole a signal indicative of the compressive load undergone by the tool.
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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 June 20, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 20, 2006.
- 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.