Method for setting a whipstock in a wellbore
CA 2192185 C · Owner: Hailey, Charles D. · Inventors: Blount, Curtis G.; Hightower, Charles M.; Hailey, Charles D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for setting a whipstock (25) in a wellbore (2) on a packer-anchor (17) which employs a wireline (11) that carries a setting assembly (20 35) which severs a, shear member (24, 33) carried by the setting assembly after the whipstock is set onto the packer-anchor.
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 May 25, 1995 and granted July 24, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 25, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 25, 2017.
- 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.