Steaming process, involving a pair of horizontal wells, for use in heavy oil reservoir
CA 1304287 C · Owner: Haston, John A. · Inventors: Cordell, Gilbert M.; Haston, John A.; Edmunds, Neil Roger
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A PAIR OF HORIZONTAL WELLS, FOR USE IN HEAVY OIL RESERVOIR" ABSTRACT OF THE DISCLOSURE, A pair of horizontal parallel co-extensive wells one, spaced closely above the other, are completed so that they extend through a heavy oil reservoir in close proximity to its base. The upper well is referred to as the injector and the lower a the producer. Each well has a screened liner and an inner tubing string extending the length of the well. Steam is circulated separately through each of the wells to heat by conduction the span of formation extending between the wells and establish fluid communication between them. The circulation is conducted in through the tubing and out through the annulus at an …
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 June 30, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 30, 2009.
- 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.