Reeled tubing gas lift mandrel
CA 2068200 A1 · Owner: Kilgore, Marion Dewey · Inventors: Kilgore, Marion Dewey
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A gas lift valve mandrel especially adapted for mounting on reeled tubing used in a well including a mandrel body in at least two sections comprising a gas lift valve adapter and a clamp which are secured together around the tubing, the adapter including means for mounting a gas lift valve and flow passages communicating into the gas lift valve and into a bore through the mandrel through which the tubing extends the flow, passage in the adapter communicating with a port in the tubing when the mandrel is mounted on the tubing and further including seal means in the adapter for sealing with the tubing around the port into the tubing. An alternate form of the mandrel includes a pipe plug hole …
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 7, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 7, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 7, 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.