Conductively heating a subterranean oil shale to create permeabilityand subsequently produce oil
CA 1288043 C · Owner: Van Meurs, Peter · Inventors: Lucid, Michael Francis; Vinegar, Harold Jay; De Rouffignac, Eric Pierre
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Shale oil is subsequently produced from a subterranean interval of oil shale, where the interval is initially substantially impermeable and contains a specified grade and thickness of oil shale. Said interval is conductively heated from borehole interiors which are kept hotter than about 600 °C and are heated at a rate such that kerogen pyrolysis products formed within the oil shale create and flow through horizontal fractures which subsequently become extended into fluid-producing wells that are positioned in specified locations.
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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 August 27, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 27, 2008.
- 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.