Method for producing viscous hydrocarbons from discrete segments of a subterranean layer
CA 1236005 A · Owner: Texaco Development Corporation · Inventors: Shum, Yick-Mow; Brown, Alfred; Huang, Wann-Sheng
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A SUBTERRANEAN LAYER, (D#77,182 -F) ABSTRACT OF THE DISCLOSURE, Method for producing viscous hydrocarbon products such as heavy crude oil or bitumen from tar sands, which products must be thermally converted into flowable condition. A discrete vertical subsection of a productive subterranean layer is marginated by a pair of spaced apart vertical wells and a horizontal well that lies substantially horizontal to the vertical wells. Controlled, pressurized flows of a heating medium such as steam are introduced to one of the vertical wells and to the horizontal well whereby to, establish a controlled thermal front. The latter is progressively urged by the pressurized steam through, the discrete …
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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 May 3, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 3, 2005.
- 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.