Foam gravel packing in highly deviated wells
CA 1209901 A · Owner: Chevron Research And Technology Company · Inventors: Millhone, Ralph S.; Elson, Thomas D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for packing particulate material in the annulus surrounding a liner in a subsurface well having a substantial deviation from vertical. Foam carrier fluid is employed for placing the particulate material. The geometry of the apparatus at the location where the material is to be placed is described.
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 August 19, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 19, 2003.
- 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.