Process for selectively plugging permeable zones in a subterrane

Details Process for selectively plugging permeable zones in a subterrane Process for selectively plugging permeable zones in a subterrane

1983-02-28

1984-12-04

Novosad, Stephen J.

Wells

Processes

Cementing, plugging or consolidating

166270, 166272, 405264, 523130, E02D 312, E21B 33138

Patent

active

044858752

ABSTRACT:
Highly permeable zones in a subterranean formation are selectively plugged by injecting an aqueous solution of an acrylamide polymer, a phenol and an aldehyde via a well into the highly permeable zones. The solution forms a non-flowing, water insoluble polymer resin in situ at a temperature of from about 50.degree. C. to 100.degree. C. and an alkaline pH over a period of from about 1 to 10 days. The polymer resin plugs the highly permeable zones of the formation.

REFERENCES:
patent: 3495412 (1970-02-01), Sakata et al.
patent: 4289203 (1981-09-01), Swanson
patent: 4291069 (1981-09-01), Pilny
patent: 4300634 (1981-11-01), Clampitt
patent: 4323123 (1982-04-01), Swanson

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