Plugging earth strata

Details Plugging earth strata Plugging earth strata

1976-12-07

1978-04-25

Novosad, Stephen J.

Wells

Processes

Cementing, plugging or consolidating

166272, 166303, 166294, E21B 4324, E21B 33138

Patent

active

040858006

ABSTRACT:
A noncondensible gas is used to preheat a portion of a permeable strata prior to plugging thereof by steam containing a surfactant. Once the desired portion of the permeable strata is plugged, steam without a surfactant is utilized for production of oil from the less permeable oil-bearing formations.

REFERENCES:
patent: 956058 (1910-04-01), Elten
patent: 3330346 (1967-07-01), Jacobs et al.
patent: 3351132 (1967-11-01), Dougan et al.
patent: 3412793 (1968-11-01), Needham
patent: 3412794 (1968-11-01), Craighead
patent: 3457996 (1969-07-01), Parker
patent: 3464491 (1969-09-01), Froning
patent: 3500931 (1970-03-01), Sloan
patent: 3993133 (1976-11-01), Clampitt

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