Well gravel packing method
CA 1206868 A · Owner: Solum, James R. · Inventors: Solum, James R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A gravel packing method and apparatus for oil and gas wells having high angled portions, i.e. angled a substantial degree from the vertical, wherein slow rotation of the drill pipe is maintained throughout the pumping of the gravel ladened fluid to inhibit the accummulation of the gravel along the drill pipe in the high-angled portions. Each of several different embodiments of a selective rotation and releasing tool comprises tubular members that are relatively movable by vertical movement of the drill pipe to engage or disengage keys in keyways to selectively rotate or not rotate respectively, a, threaded releasing screw for releasing the liner at the completion of the gravel pack. The …
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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 July 2, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 2, 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.