Use of potassium hydroxide solutions in a well bore

Details Use of potassium hydroxide solutions in a well bore Use of potassium hydroxide solutions in a well bore

1980-06-30

1981-08-18

Novosad, Stephen J.

Wells

Processes

Cementing, plugging or consolidating

166305R, 166312, E21B 3316, E21B 4322, E21B 3700

Patent

active

042841402

ABSTRACT:
A workover fluid, a kill fluid, or completion fluid having potassium hydroxide dissolved therein is injected into a well bore penetrating and communicating with a subterranean sandstone formation containing water-sensitive fine particles, including clays, and invades the sandstone formation. Potassium hydroxide contacts and stabilizes the fine particles for a substantial period of time thereby substantially preventing formation permeability damage caused by encroachment of aqueous solutions having a distinct and undesired ionic constituency.

REFERENCES:
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patent: 3777817 (1973-12-01), Feuerbacher et al.
patent: 4031959 (1977-06-01), Henderson
Cooke, Jr. et al., "Oil Recovery by Alkaline Waterflooding", Journal of Petroleum Technology, Dec. 1974, pp. 1365-1374.

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