Recovering oil bypassed by a steam override zone

Details Recovering oil bypassed by a steam override zone Recovering oil bypassed by a steam override zone

1987-12-28

1989-04-11

Neuder, William P.

Wells

Processes

Distinct, separate injection and producing wells

166272, 166303, E21B 4324

Patent

active

048197254

ABSTRACT:
The invention is a method of recovering oil bypassed by a steam override zone. First, the production well is drilled below the oil producing zone into an underlying interval. The well perforations in the oil producing zone are closed off. The underlying interval is fractured to establish fluid communication between the underlying interval and the oil producing zone. The production well is completed for production through the fractured portion of the underlying interval. Finally, the steamflood is controlled to increase the pressure in the oil producing zone and drive the oil and steam downward to the new perforations in the underlying for production.

REFERENCES:
patent: 1884858 (1932-10-01), Ranney
patent: 3908762 (1975-09-01), Redford
patent: 4386658 (1983-06-01), Hunt, III
patent: 4733726 (1988-03-01), Alameddine et al.

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