Single well tracer method to evaluate enhanced recovery

Details Single well tracer method to evaluate enhanced recovery Single well tracer method to evaluate enhanced recovery

1977-03-18

1978-07-11

Novosad, Stephen J.

Wells

Processes

With indicating, testing, measuring or locating

E21B 4322

Patent

active

040995658

ABSTRACT:
Data useful to evaluate the effectiveness of or to design an enhanced recovery process (the recovery process involving mobilizing and moving hydrocarbons through a hydrocarbon-bearing subterranean formation from an injection well to a production well by injecting a mobilizing fluid into the injection well) are obtained by a process which comprises sequentially: determining hydrocarbon saturation in the formation in a volume in the formation near a well bore penetrating the formation, injecting sufficient of the mobilizing fluid to mobilize and move hydrocarbons from a volume in the formation near the well bore penetrating the formation, and determining by the single well tracer method a hydrocarbon saturation profile in a volume from which hydrocarbons are moved. The single well tracer method employed is disclosed by U.S. Pat. No. 3,623,842. The process is useful to evaluate surfactant floods, water floods, polymer floods, CO.sub.2 floods, caustic floods, micellar floods, and the like in the reservoir in much less time at greatly reduced costs, compared to conventional multi-well pilot test.

REFERENCES:
patent: RE28963 (1976-09-01), Fertl et al.
patent: 3590923 (1971-07-01), Cooke, Jr.
patent: 3623842 (1971-11-01), Deans
patent: 3856468 (1974-12-01), Keller
patent: 3894584 (1975-07-01), Fertl
patent: 3990298 (1976-11-01), Deans

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