Subsea well casing hanger packoff system
CA 1318245 C · Owner: Fmc Technologies, Inc. · Inventors: Hopkins, Bob C.; Underwood, Donald M.; Wester, Randy J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved metal to metal seal packoff system for establishing a high pressure metallic barrier between adjacent surfaces of concentric tubular elements in a well head housing and casing hanger, is provided. The packoff comprises assemblies of parts including uniquely configured metal seal elements and seal energizers therefor, which cooperate in a novel manner to produce a significantly improved seal with considerably enhanced ability to withstand unusually high fluctuations in well pressures. The packoffs are relatively easy to assemble and are capable of installation as an assembled unit into a subsea or other remotely located wellhead without complicated procedures or other detrimental …
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 25, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 25, 2010.
- 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.