Oil recovery

Details Oil recovery Oil recovery

1975-12-01

1977-07-12

Purser, Ernest R.

Wells

Processes

Distinct, separate injection and producing wells

166252, E21B 4316

Patent

active

040348105

ABSTRACT:
The sweep efficiency of a two-phase gas/aqueous fluid in a formation is at a maximum when the volume ratio of gas to aqueous fluid corresponds to the minimum total mobility. By injecting gas and an aqueous liquid into a formation following a miscible flooding agent, the efficiency of the miscible flooding can be optimized.

REFERENCES:
patent: 3096821 (1963-07-01), Dyes
patent: 3167118 (1965-01-01), Habermann
patent: 3231018 (1966-01-01), Handy
patent: 3386506 (1968-06-01), Quance
patent: 3443635 (1969-05-01), Gogarty et al.
patent: 3472320 (1969-10-01), Dyes
patent: 3599717 (1971-08-01), McMillen
patent: 3779315 (1973-12-01), Boneau
patent: 3882940 (1975-05-01), Carlin
Dyes, "Where Are We Going With Miscible Displacement," The Petroleum Engineer, 2/61, pp. B-19-B-23.
Holloway et al., "Performance of a Miscible Flood With Alternate Gas-Water Displacement," Journal of Petroleum Technology, 4/64, pp. 372-376.

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