Methods of and apparatus for inserting pipes and tools into wells
CA 2211835 C · Owner: Funk, Kelly · Inventors: Funk, Kelly
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A snubbing configuration for inserting a pipe and/or a tool assembly on a pipe into a live well head employs a telescopic cylinder e.g. a telescopic snubbing jack, between an upper BOP, e.g. an annular BOP, and a lower BOP e.g. a double-gate BOP, in place of aconventional stripping BOP and an extended spool which are required in conventional configurations to accommodate long tool assemblies.
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 29, 1997 and granted May 1, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 29, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 29, 2019.
- 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.