High temperature packer for well conduits
CA 1269320 C · Owner: Baker Oil Tools, Inc. · Inventors: Luke, Mike A.; Richardson, Downie S.; Preston, Dan C. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A packer for effecting steam treatment of a production formation of a subterranean well comprises an insulated mandrel which is slidably inserted within the bore of an inner tubular body assembly. An outer operative tubular assembly surrounds the inner assembly and mounts a plurality of drag blocks upper and lower cone elements, a plurality of radially displaceable slips cooperating with the upper and lower cone elements and an outer packing, element fabricated by an assemblage of high temperature resistant non-resilient seal elements formed primarily of graphite. An inner packing element is provided in the inner tubular body assembly utilizing additional, high temperature resistant …
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 May 22, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 22, 2007.
- 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.