Downhole anchoring tools conveyed by non-rigid carriers
CA 2668535 C · Owner: Schlumberger Canada Limited · Inventors: Farrant, Simon L.; Almaguer, James S.; Chen, Kuo-Chiang
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus and method provides an anchoring apparatus for use in a wellbore that comprises a gripping assembly and an actuation assembly. In one arrangement the actuation assembly includes a motor and a module having at least a compressible element (e.g. a hydraulic module) between the motor and the gripping assembly. Upon activation the motor actuates the hydraulic module to cause activation of the gripping assembly. In one arrangement the anchoring apparatus is designed to pass through a tubing or other restriction in the wellbore. When in the retracted state the gripping assembly of the anchoring apparatus has an outer diameter that is smaller than an inner diameter of the tubing. When …
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 November 5, 2002 and granted October 9, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 5, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 5, 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.