Method of stabilizing clay formations

Details Method of stabilizing clay formations Method of stabilizing clay formations

1978-06-26

1979-06-19

Stein, Mervin

Hydraulic and earth engineering

Earth treatment or control

Chemical

166295, E02D 314, E21B 3313

Patent

active

041585216

ABSTRACT:
A solution of an oxygenated polyamine, which is the reaction product of dimethylamine and epichlorohydrin, has been discovered to possess excellent stabilization properties when used as a treatment for stabilizing a clay containing formation, for example in the treatment of oil and gas producing boreholes which penetrate clay containing formations. Preferred copolymers of this type which are useful in clay formation treatments include those having epichlorohydrin to dimethylamine mole ratios in the range of from about 0.79 to about 0.93.

REFERENCES:
patent: 2454547 (1946-10-01), Bock et al.
patent: 3424681 (1969-01-01), Stanford
patent: 3468816 (1969-09-01), Thompson
patent: 3738945 (1973-06-01), Panzer et al.
patent: 3755160 (1973-08-01), Witt
patent: 3900423 (1975-08-01), Markorsky
patent: 3920546 (1975-11-01), Newkirk
patent: 4001486 (1977-01-01), Phillips
"Aqueous Polymers for Treating Clays in Oil and Gas" by McLaughlin et al.; Society of Petroleum Engineers of Aime-Paper No. SPE6008-1976-available from: SPE-6200 N. Central Exp., Dallas, Tex. 75206.

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