Misalignment tieback tool - rotating casing
CA 1237661 A · Owner: Vetco Offshore Industries, Inc. · Inventors: Hughes, David W.; Milberger, Lionel J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A tieback tool (10) and method for connecting tieback conductors (12) to a well system (14) where misalignment occurs between the tool and the well system including a body (40) having an externally threaded dog ring (44) which engages the throats of J-slots (34) in the well system and which initially serves to align the tieback tool to the well system. Rotation of the tieback tool after initial alignment actuates the threaded dog ring (44) in the tieback tool to lock and seal the tieback tool into the well system.
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
- Granted June 7, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 7, 2005.
- 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.