Method for sealing thief zones with heat-sensitive fluids

Wells – Processes – Distinct – separate injection and producing wells

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Details

166 651, 166248, 166273, 166288, 166302, E21B 33138

Patent

active

048097802

ABSTRACT:
A method is disclosed for selectively sealing thief zones in a formation. First, a saline pre-flush water is injected into the formation. Then, at least one slug of a saline soution of heat-sensitive sealing fluid is injected into the formation, followed by injection of a saline push water. Electrical resistance heating of the formation is induced sufficient to cause the sealing fluid to undergo in-situ transformation to seal the thief zones.

REFERENCES:
patent: 3070159 (1962-12-01), Marx
patent: 3620302 (1971-11-01), Parsons
patent: 3669188 (1972-06-01), Coles et al.
patent: 3857776 (1974-12-01), Titus et al.
patent: 4013538 (1977-03-01), Schneider et al.
patent: 4199025 (1980-04-01), Carpenter
patent: 4228853 (1980-10-01), Harvey et al.

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