Method and system for controlling sand in thermal recovery of oil from tar sands
CA 1094447 A · Owner: Texaco Development Corporation · Inventors: Payton, Joy T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
METHOD AND SYSTEM FOR CONTROLLING SAND IN THERMAL RECOVERY OF OIL FROM TAR SANDS (D#72,705-FB), ABSTRACT OF THE DISCLOSURE A method and system is disclosed for producing oil from a subterranean reservoir of tar sands as unconsolidated oil bearing sands. A screen is set in an open hole the, screen being large enough to pass a majority of the formation sand and small enough to retain a packing material a, wash pipe is passed through the screen for connecting to a horizontal or lateral nozzle in a hole in the bottom of the screen for washing out a cavity around the screen a, weight is dropped down the wash pipe for breaking off the nozzle for enlarging the screen bottom opening and a …
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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 January 27, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 27, 1998.
- 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
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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.