Retrievable bridge plug and packer
CA 2009810 C · Owner: Manke, Kevin R. · Inventors: Manke, Kevin R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A retrievable bridge plug and packer apparatus. The tool includes a packer settable by right-hand rotation and vertical manipulation of the tool string and a bridge plug also settable by right-hand rotation and vertical manipulation of the tool string. A disabling tool is provided to disable the packer during setting of the bridge plug so that the packer is not prematurely set. After setting of the bridge plug below the formation, the packer and disabling tool may be disengaged from the bridge plug. At this point the disabling tool is disengaged so that the packer may be set above the formation. The packer is unset by pulling on the tool string, and the packer and disabling tool may be …
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 February 12, 1990 and granted June 21, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 12, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 12, 2012.
- 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.