Oil well production system
CA 2073415 A1 · Owner: Conoco Inc. · Inventors: Sauer, Carl W. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract Of The Disclosure A production system for a subsea well includes a concentric gas lift string and a production tubing string both located within a production riser. Lift gas injected down the annulus between the production tubing string and gas tubing string is injected into the production tubing string below the mud line and thus provides gas lift assistance to the produced fluid stream. Thus increased produced fluid flow is provided while simultaneously insulating the produced fluid from the surrounding ocean thus maintaining the temperature of the produced fluid which aids separator efficiencies once the produced fluid reaches a surface platform associated therewith. The use of …
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 July 8, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 8, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 8, 2014.
- 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.