Anchoring device for a wellbore tool
CA 2444648 A1 · Owner: Angman, Per G. · Inventors: Angman, Per G.; Slack, Maurice William
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
22, A self anchoring tool is disclosed that can be positioned downhole and used in casing. The tool has an architecture that supports installation by running downhole and into, engagement with a groove formed in the casing called the profile nipple. The , tool, readily supports use of weak materials such as plastic for components of the , tool that, must be drilled to reopen the wellbore after cementing. As such no , restriction is needed, in the casing for accepting or latching the tool and the portion of casing including the, groove can be installed at the start of the drilling operation. In addition the profile nipple, can be used to engage other drilling tools and therefore, can …
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 October 9, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 9, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 9, 2025.
- 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.